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Skip White Performance

3349 E. Stone Dr.
Kingsport, TN 37660

UPC: 333915779186

BBC CHEVY 632 DART SHORT BLOCK FORGED PISTONS SCAT CRANK & RODS -7.5cc DISH

$8,150.00

Available



BBC CHEVY 632 CUBIC INCH COMPLETE DART SHORT BLOCK KIT. 4.600 bore x 4.750 stroke, 4340 Manley FORGED CRANK & MANLEY 6.700 H-BEAM RODS. WISECO 2618 AIRCRAFT ALLOY FORGED -7.5cc DISH PISTONS.

This short block kit is not assembled.

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The photo above and below are file photos. Actual appearance may vary. This picture is to give you an idea of what all is included. All parts are brand new, first line, unblemished, and balanced. This short block kit is not assembled. See our other listings for the assembled version of this short block. We will update our pictures soon.

THIS KIT INCLUDES:

A brand new Generation Dart block that has been decked, bored and honed to specs, coated cam bearings, Manley crankshaft and 4340 Manley rods, Wiseco forged pistons, high performance rings, King bearings, and a heavy duty 168 or 153 tooth flexplate and a Pro-Race brand damper. The assembly is fully balanced. See details for all the actual specs. In the lower section of this ad is information on the various upgrades we offer in our other listings.

Our short block kits are custom built to your specifications (e.g., piston configurations, compression ratio, and upgrades).

BBC NEW GENERATION DART BLOCK BORE 10.200" STD DECK HEIGHT

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We now use the New Generation Dart blocks in our BBC 572 engine builds. The New Generation Dart block is light years ahead in overall construction as compared to any of the other blocks on the market. Dimensional specs are spot on, and this has been an issue with other blocks we have used in the past. Many of the top engine builders, ourselves included, have found the new Dart block to be superior to the earlier generation Big M series Dart block in many ways.

Dart Machinery has completely redesigned the Big M series Block. They have incorporated numerous improvements and new features to virtually every area of the block.

SBC BBC CHEVY OIL FILTER ADAPTER AND HIGH PERFORMANCE CAM BEARINGS FOR DART SHP BLOCK

These items are both included, but not installed.

When replacing the filter with one of your choice, you must use a high quality oil filter that has a by-pass valve in it. Some filters may also have an anti-drainback valve on them, but they are not necessary on V-8 Chevy engines, but the bypass valve feature is a must. Our engines are now equipped with a billet oil filter adapter that requires the use of an oil filter that has its own by-pass valve in it. Always opt for the medium length version, as this will help maintain oil pressure and volume much better than the short version. If your headers are an issue with the medium length filter, then the shorty version is acceptable. See our listings for the recommended oil filters.

BILLET OIL FILTER ADAPTER 30 photo OIL FILTER ADAPTOR SMALL PIC. 2.jpg  photo dart cam bearings.jpg

Billet aluminum oil filter adapter.

Dart Machinery has completely redesigned the Big M series Block. They have incorporated numerous improvements and new features to virtually every area of the block.

The block is bored to size with our new Centroid touch probe machine. Few machine shops have a machine of this accuracy.

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We also deck the blocks to an RA finish of approx. 15 or better. The decking procedure is also done by our Centroid CNC machine.

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We often find many brand new blocks to have a sloping deck of up to 4 thous. When we're finished decking the block it is within approx. .001 accuracy from end to end. Many machine shops fail to catch this as the machinery they use does not allow for such accuracy.

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We then plate hone the block with our new Sunnen SV10 diamond hone machine. This is also a very advanced machine that hones the block with a finish unlike conventional machines.

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The final step is to clean the block in our high pressure block washer. You should always re-wash your block before assembly. This is to assure that the block is free of contaminants.

Pictured below is the rotating assembly that comes with the short block kit.

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File photo. Pistons will be -7.5cc dish.

READ THIS LISTING COMPLETELY BEFORE YOU BUY ELSEWHERE!

Crankshaft Specs.

  • Crankshaft: Genuine Manley
  • Crankshaft Stroke: 4.750"
  • Crankshaft Material : 4340 Forged.
  • Journal Diameter: STD BBC
  • Rear Main Seal: 2 pc RMS
Connecting Rod Specs.
  • Rods: Genuine Manley
  • Rod Type: Manley
  • Rod Length: 6.700"
  • Rod Material: Forged 4340 Alloy.
  • Rod Bolt/Cap Screw: ARP 8740 Cap Screws.
Piston & Ring Specs.
  • Pistons: Wiseco Fully Forged. High Performance for street/strip use.
  • Piston Size: 4.600"
  • Dome Volume: -7.5cc Dish Top
  • Compression Height: 1.115
  • Piston Material: Forged 2618 Aircraft Alloy
  • Piston Rings: Mahle High Performance, Moly, Standard Tension.
  • Ring Size and Fit: 1/16 1/16 3/16 File Fit.
  • Ring Material: Ductile Iron/Cast/Stainless/Moly
Bearing, Damper, and Flexplate Specs.
  • Main Bearings: Clevite or King MB557HP High Performance.
  • Rod Bearings: Clevite or King CR807HP High Performance.
  • Balance: In House on CWT balancer.
  • Damper: ATI brand Damper 7.074"
  • Flexplate: Heavy Duty 168 tooth or 153 tooth. Manual Trans. flywheels available.

Compression Ratio Chart

The calculations below were done with pistons at .005 below the deck. We usually deck the bbc blocks down to allow the pistons to sit .003-005 below the deck. Zero deck is most optimal on sbc engines, but bbc pistons tend to have a bit more piston rock than the sbc pistons. We used a 4.630 head gasket diameter, and a .040 head gasket thickness in our calculations to come up with our comp. ratio values.

Part Number

Cylinder Head Volume

117cc

119cc

121cc

632 Assembly

Static Compression Ratio

4.600 Bore

10.54

10.41 10.27
WISECO FULLY FORGED PISTONS, RATED AT 800+ HP. WISECO PISTONS ARE 100% MANUFACTURED IN THE USA. THEY ARE ONE OF THE HIGHEST RATED PISTON BUILDERS IN THE COUNTRY.

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The Wiseco forged pistons are rated very high in the street/strip performance industry. They
are made using the 2618 aircraft alloy and have fully machined crowns. We prefer the 2618 alloy over the lower cost 4032 alloy. This alloy may fragment from the effects of detonation and if this happens, it can be very destructive to the engine.
Those types of pistons are fine for stock or mild engine builds, but should never be used in carbureted engines built to high horse power levels.
The forged 2618 alloy piston is much more resistant to the effects of detonation and heat.

Our Wiseco Forged pistons are custom designed with an increase in compression height. This has many advantages. Here are a few facts about compression height and deck height.

Our custom made pistons have a compression height that is .010 taller on bbc pistons, and .015 taller on sbc pistons, as compared to most all of the catalog pistons on the market. We find this to be a very valuable feature.

Since our pistons sit at a taller than normal compression height, we only have to remove approx. .005-.010 off the deck surface of the block. Our goal is set the piston at zero deck (flush with the deck surface). This maintains the deck's thickness, making it much stronger than a block that has been cut down .025. The engine will also run a bit cooler with a thicker deck. It's well known that the deck dissipates much of the built up heat an engine generates. This also allows for future deck re-surfacing without compromising the integrity of the block. On our bbc engines, we actually leave the piston about .003 to .005 in the hole to allow for possible piston rock. Our sbc engines will have the pistons setting right at zero with the deck.

You may have noticed that our Wiseco custom made forged pistons are referred to as Racing Pistons on the package. This does not mean that the pistons are for racing only. This is a generic term, referring to their ability to be used in high performance applications as well as for street rod use. These pistons are perfectly designed for use on the street, as well as for medium to upper level drag racing.
We have built approximately 5000 engines using the Wiseco pistons. The engines have been for street rod and strip use. We have seen no problems, nor have there been any complaints. They are an excellent product in every respect.

These pistons are also suitable for use with nitrous or blower setups.

The picture below is a file photo of our Wiseco piston.

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The New Manley Pro-Series #190280 with 6 counterweights, 4340 Forged Crankshaft.

The picture below is a generic file photo

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Some of the benefits of the new Manley Pro-Series crankshaft.

Manley Pro Series crankshafts are considered a top tier level crank as compared to the more common brands available. They feature forged 4340 construction and undergo a multi-step heat-treatment process and are then nitrided for added strength. The crankshafts are stress-relieved, shot-peened, and magnafluxed. Manley Pro Series crankshafts have micro-polished large .125 in. radius journals, gun-drilled mains, and lightened rod journals for weight reduction. The counterweights are fully profiled and they are designed for internal balancing. These crankshafts will include a spec. sheet that validates journal sizes and checks for taper on each journal as well as finish quality. As of this date, 5/8/24 We have now upgraded all of our 632 engines and 632 short block kits with the Manley Pro Series crank.

We recommend that you check the thrust clearance on the crank before assembling the engine. This is recommended on any crankshaft, regardless of brand or cost. Also be sure to check your main and rod journal size.

Our choice of rods are the Genuine Manley 6.700 H-beam rods with ARP 2000 cap screws.

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The Manley H-beam rods are very high rated in the racing industry. They easily outrank most of the other common brands on the market.

Genuine ARP 2000 cap screws.

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We have noticed some engine builders using low cost generic rods and crankshafts in their engines. These non-branded, (no-name) products are often poor quality in many ways. You will notice many of the low end engine builders fail to mention the actual brand of the rods or cranks used in their engines. Upon further investigation you will find such parts not to be a branded name product. They may label these parts with a name, but one that is totally unrecognizable in the industry. Our experience in years past with such rods and cranks has been disappointing to say the least. Besides the obvious issues such as incorrect sizing and machining that is difficult to correct, the questionable alloy these items may be produced from and the potentially incorrect heat treating methods used, could prove to be disastrous. Little can be done to verify this and nothing can be done to correct it. Failures of such critical parts will usually result in catastrophic damage to the engine. As you may have noticed, this is why we specify the brand name and series of every part used in our engines.

Many of the inferior "no-name" rods on the market will also have "no-name" rod bolts in them. We have seen these bolts before, and they are very low quality. They don't have ARP's rolled thread design, and they don't torque down with the same characteristics as a genuine ARP bolt. It's not just a matter of having a different brand bolt in the rods; these bolts are low quality in many ways. They have been known to fail in engines to a much greater degree than a high quality rod bolt, and this failure usually causes catastrophic damage in the engine. Beware of rods that don't mention the rod bolt brand. As far as we're concerned, ARP bolts are the only brand we would ever use or accept in a set of rods.

Before the engine is assembled, we strongly suggest checking the rods on a Sunnen machine for sizing on both ends. We recommend this with any rod regardless of cost or brand. It is not uncommon to find some of the rods requiring a slight bump through the hone for perfection in sizing and roundness. We also offer this kit with a proofed set of rods. This is an excellent choice for those wanting to build the engine on their own.

Total Seal High Performance Rings.

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KING OR CLEVITE BRAND BEARINGS, DEPENDING ON AVAILABILITY MAIN AND ROD BEARINGS INCLUDED.

MOST OFTEN WE USE THE CLEVITE BEARINGS, BUT DUE TO SHORTAGES WE ARE SOMETIMES FORCED TO USE THE KING HP BEAINGS. THEY ARE BOTH HIGH QUALITY BEARINGS.

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BBC CHEVY ATI SUPER DAMPER, SFI RATED, INTERNAL BALANCE, 7.074" FOR BBC CHEVY

Please read this complete ad and you will have a better understanding of why the use of a premium damper is a must on most high performance engines.

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The patented ATI Super Damper standard harmonic balancers are designed exclusively for high performance engines. Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight.

The inertia weights have six (2-ring design) or eight (3-ring design) computer-machined grooves to retain the proper durometer O-rings (dyno tested for each application). Whether you race or just drive on the street, ATI harmonic balancers are the perfect choice.

Features include:

  • Eliminates torsional crankshaft vibrations
  • Exceeds SFI 18.1 specs
  • Black zinc chromate finished
  • OEM equipment on a variety of crate engines
  • Tunable, re-buildable, and extremely efficient at all rpm
  • Laser-engraved 360° timing marks

We have noticed others using a low grade knockoff brand damper/balancer, and we have encountered them in the past. They are substandard in appearance, and are often out of spec. The timing marks were also poorly marked on some of the balancers we have come across. You don't want a balancer coming off or one that is improperly weighted. Another problem with low grade dampers is the elastomer bonding can lose its adherence to the inner and outer structure.

HEAVY DUTY FLEXPLATE INCLUDED.

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HEAVY DUTY FLEXPLATE. This flexplate will resist cracking. One good telltale in identifying a low quality flexplate is the lack of welding on each side where the plate mates to the ring gear. They usually have a pale grey color to them, as they are not coated, and will rust quickly. Ours are welded on both sides, and are much thicker than an OE plate, and are either zinc dichromate or black powder coated. We would never use the thinner OE style plate on an assembly like this.

We do offer this assembly with a manual flywheel. See our other listings. In most cases we do have both sizes, 153 and 168 tooth, available.

WARNING: the flexplate and crank have a dowel pin hole. You must align the flexplate and crank dowel pin holes, but do not use a dowel pin. The flexplate was aligned to the crank when we balanced the assembly, and must be installed the same way.

Our CWT 5500 Balancer.

We do our own balancing with our new state of the art CWT 5500 Series balancers . The CWT 5500 is the ultimate for precision balancing. We now have three of these in our machine shop. We consider this machine to be highly advanced compared to the Hines balancer we once used. We balance every rotating assembly we sell within 2 grams or less at no extra charge. A balance sheet is included with your assembly.

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Three CWT balance machines under one roof is a rare sight.

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Our crew wrapping up for the day. Pardon the mess.

Our thoughts on what the competition has to offer.

Many short block kits we see on the market are not using the most suitable parts. We hope you can value the fact that we have put together an above average short block kit. The failure rate with the parts we use is near non-existent. It was through trial and error in years past that taught us where to draw the line with low cost parts. We are out-priced by many others selling short block kits that include parts with high failure rates. Many of these parts also pose a great problem due to the fact they require additional machining and can end up costing you a great deal more money and time. If you're going to have a machine shop build your engine, we strongly advise you get an opinion from them on the parts you're going to be bringing to them. Rest assured they will find no problem with the quality of our parts. We have also seen sellers offering parts that are not compatible with what most people are building. We have seen several sellers offering no-name brand rods with an assembly. These type of rods also have no-name bolts in them. It is our strong advice to avoid this grade of rods. The low grade dampers and flexplates are also another problem. Another area of concern would be balancing. Not sure how much attention these sellers are giving in this area. We spend up to two hours balancing an assembly, and using the very best up to date balancing equipment on the market. If the assembly is not balanced properly, it will hammer the bearings out of the engine, not to mention there is nothing worse than an engine that lacks a smooth feel and sound when under load.

We offer this short block kit with selected upgrades. Listed below are some of the most requested ones. Many not only improve performance, but further enhance the reliability and longevity of your engine, along with resale value.

SFI Certified Flexplate: Cost of this upgrade is $24.50, This is a very low cost upgrade and may be required when racing your car at certain tracks. The flexplate that comes with this assembly is a heavy duty plate, but the SFI certified plate is one step up in quality and safety. This SFI plate is made in North America. We noticed these have much less run-out and warpage than we see with many other plates on the market. Plates with too much run-out and warpage can cause a host of problems for your transmission and starter, and affect balancing. The low cost to upgrade to this is well worth, it in our opinion.

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SFI Rated Billet Steel flywheel upgrade/option for manual transmission. Upgrade to a SFI billet steel flywheel 168-tooth or 153-tooth for manual transmissions. We highly recommend the SFI billet steel flywheel for those running hard. These are fully cnc'd and far superior in many ways compared to the regular cast iron flywheel.

Cost for the SFI billet flywheel option can vary depending on availability. We carry two lines of the SFI plates, PRW and Ram. The Ram plates are a much higher grade product. We have this upgrade/option featured in our other listings. There will be a Chevy 153 tooth and a Chevy 168 tooth size available. Be sure you know the size you need.

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Crank polishing: Cost for the crank polishing upgrade is $39.50, Extends bearing life, reduces oil temp, frees up a slight amount of average horsepower. This is a very low cost upgrade, and in the world of mass production, most cranks do not come with a true polished finish. This is why most machine shops have a machine to do this. The difference is dramatic between a crank right out of the box and one that we have polished. Bearing companies claim that cranks that have better finishes on the journals will survive the break-in better, and have much longer bearing life. We do a two-step process and bring the RA numbers down in the single digit range. We have the most advanced crank polishing machine on the market.

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Rod sizing: Cost of this rod sizing upgrade is $50.00, Sizing the big end and wrist pin bushing on the Sunnen machine saves a trip to the machine shop. All rods, regardless of brand, should be checked for sizing on a Sunnen machine, and corrected if needed. You will seldom see a complete set of rods that have perfect sizing on both ends right out of the box.

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Race balancing: Cost of this race balancing upgrade is $125.00, This is for those who want the engine to operate virtually vibration free at high rpm. Extends engine life and frees up a few more horse power. This is a somewhat labor intensive procedure and is not required, but the feel of an absolutely vibration free engine at high rpm is desirable by many. The standard balance job that is included with this assembly at no extra charge is certainly sufficient. With a race balance job, all pistons and rods are match weighed to within 2/10's of a gram or less, and the final balance is brought down to around 1 gram plus or minus. An ultra smooth engine at high rpm has a noticeable feel and sound to it. If you do not opt for this upgrade, the assembly will still be fully balanced. We spend a good hour and a half doing the regular balance work, and it will certainly meet your needs.

Block prep package: Cost of block prep package is $395.00, This upgrade includes notching the block on our Centroid cnc machine to allow additional clearance for the crank if necessary. We also de-burr the block, hone the lifter bores to spec, chamfer the top of the cylinders, and lifter bores, and install the special cam bearings and freeze plugs. The block is then thoroughly cleaned in our block washing machine. We find this upgrade essential for those lacking the proper equipment or knowledge to perform this correctly.

BBC Short Block Kit Assembly upgrade: Cost of BBC Short Block Kit Assembly is $595.00 This upgrade includes everything in the Block Prep Package plus assembling the short block kit. If you choose this upgrade, DO NOT also include the block prep package in your cart.

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Preparing the block in our Centroid cnc machine for precise notching, if necessary.

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The blocks are washed in a dedicated block cleaning machine.

Pictured above is the final rinsing and drying to remove the cleaning solvents.

The upgrades above are all available in our other listings. Some of these are often requested by those building an engine without a machine shop. We find most of these upgrades very valuable for those wanting to take longevity and durability to the next level. They are all bottom end related, and that's an area worth investing a few more dollars into, in our opinion, especially if you're planning on running long and/or hard. These upgrades are also valuable for your build history on your engine, and would certainly increase the resale value of your engine, should you ever sell it.

PAYMENT AND SHIPPING DETAILS


Contact us for shipping cost for overseas delivery. We have excellent sources for low cost shipping anywhere in the world.

*Important note

Any short block kit shipped from us to California, Washington, and Oregon will be charged a surcharge of $100.00 in addition to the regular shipping fee. We are located in Eastern Tn. and our shipping fees to those three states are much greater than any of the other states.

We have now included a flat rate shipping fee on this short block kit when shipped within the continental USA with the exception of the three states mentioned above. This rate only applies to delivery to a business with the capability to unload the short block kit without the use of a lift gate. You must have a dock or fork lift. We can have the short block kit delivered to a residence with lift gate service but at an additional cost.*

For tech support, please use the "Ask A Question or Contact" tab.

A final note.

Our user id is: skipwhite , and our store name is whiteperformance1. You may have noticed other sellers using a similar name offering similar products. These other sellers have capitalized on our name as we see it, and many customers searching for us will inadvertently find them, thinking we are one in the same company. There is only one "Skip White." We are the original premier seller under this name since approximately 2003. We have no other names, nor are we associated with any other company regardless of the similarity in the name or location. Our official company name is Skip White Performance. Please see the article below for a more detailed explanation.

The real story...Skip White Performance vs. White Performance & Machine

I'm sure many of you have noticed there are 2 high performance engine builders in Kingsport, TN with similar names, and this has led to a great amount of confusion.

We are Skip White Performance, NOT White Performance and Machine.

Due to the name similarity many customers looking for us online inadvertently find them, thinking we are the same company. Definitely not...there is no connection between the two companies. We don't have a problem with free enterprise (competition). However, when the competition builds their foundation on such things as a name similarity and their supposedly long history of being in business, then we think it's about time we set the record straight.
We have owned White Performance since 2003, with the exception of the machine shop, which was owned by Fred White at the time. He continued to operate the machine shop and build engines for us while we continued selling online under the user ID of skipwhite and the store name of whiteperformance1.
Due to their limited production capability and many disagreements about the engine building process and workmanship, we opted to open a full scale machine shop of our own a few years later. Fred White began competing against us even though our contract had a non-compete clause in it.
As our business grew, we opened a second, much larger warehouse and machine shop around 2011, located on Brookside Ln. in Kingsport TN. By putting heart and soul in this company, we have become the number one street rod engine builder in the nation.
Fred sold his shop to an investor in 2016 and the new owners continue to reap the benefits from this confusion between the two shops. This investor lacks any knowledge of this industry. They continue to use the White Performance & Machine name. Contrary to what is posted on their website, Fred White is no longer associated with the company in any way. Their main spiel in advertising is, "In business since 1979," when in fact, we purchased the White Performance company in 2003, with the exception of the machine shop.
All in all, we have been in this business 16+ years. Skip White's passion has been owning and building street rods for 47 years on a personal level. The knowledge he has gained over time has allowed him to venture into this business and succeed to a very high level.
The great pretenders continue capitalizing on our success due to the name similarity, but have been degrading our reputation. Recently, we have been getting calls nearly on a daily basis from people that now realize there are two shops in this town with very similar names. They complain of serious problems in getting their engines in a timely manner from them. They think they purchased their engine from us. Due to the confusion, there is an increasing amount of negative talk that is starting to reflect on our reputation within the street rod community, when in fact we have a near perfect reputation in this industry. We have an "A+" rating with the Better Business Bureau and we have maintained the A+ rating for many years.
FAST FORWARD TO 2019...We have become the largest street rod engine builder in the nation. Our engines, rotating assemblies, and cylinder heads are built to very high standards and shipped to our customers in a timely manner. We are a premier seller on with a positive feedback score of well over 206,000 and growing, as compared to our competitor’s score of approximately 24,000.
Our engines are custom-built to our customers' specifications and are shipped in approx. 2-4 weeks, perhaps sooner, depending on the season. Our rotating assemblies usually ship out in about one week or less, and our heads ship in about a week or less.

Now you know the real story, and we hope this helps with the confusion.

  • We are not responsible for collateral damage caused by the use of this product.

Product Information

UPC333915779186
Product TypeShipped Product
Price (excl. tax)$8,150.00
Price (incl. tax)$8,150.00
Tax$0.00
Availability Available
Shipping Cost 375.0
Number of reviews 0

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