The pictures above are file photos of our Wiseco pistons.

Wiseco forged pistons are highly regarded in the street/strip performance industry. Our pistons are made using 2618 aircraft alloy and have fully machined crowns. Most lower-cost forged pistons on the market do not use this alloy, and they do not have fully machined crowns. We prefer the 2618 alloy over the lower-cost 4032 alloy, which may fragment due to detonation, causing significant damage to the engine.

The 4032 forged alloy pistons are suitable for stock or mild engine builds, but should never be used in carbureted engines built to high horsepower 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 increased compression height, which has many advantages.

Since our pistons sit at a taller-than-normal compression height, you'll only have to remove approximately .005-.010 off the deck surface of a virgin block to achieve a 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 cooler with a thicker deck, as the deck dissipates much of the built-up heat an engine generates. This also allows for future deck resurfacing without compromising the integrity of the block.

Scat Crankshaft

The Scat crankshaft supplied with this assembly is manufactured from an exclusive Space Age material designed for high strength and fatigue resistance. Scat cranks are 25% stronger than stock OEM cast cranks and are the best value you will ever find. The Scat crankshafts are ideal for building a strong bottom end for street rods, dirt and circle track racing, and drag strip racing. This crank is suitable for use up to approximately 500-525 HP.

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

Scat Connecting Rods

Our Scat rods feature genuine ARP 8740 Series 12-point cap screws, providing excellent block clearance in the lower end of the cylinders. The quality of Scat rods surpasses that of many low-cost no-name rods on the market, as well as some branded rods.

Scat rods are bronze bushed, which are far superior to press-fit. They are much more durable, free up a slight amount of horsepower, and reduce piston and oil temperature. Press-fit rods are not recommended, as machine shops often charge up to $60 to press them on. Bushed rods with full floating wrist pins, which we offer, are simple to attach to the pistons.

Flexplate

Heavy-duty flexplate included. This flexplate will resist cracking. A low-quality flexplate can often be identified by the lack of welding on each side where the plate mates to the ring gear, their pale grey color, and their susceptibility to rust.

Our flexplates are welded on both sides, much thicker than OE plates, and are either zinc dichromate or black powder coated. We would never use the thinner OE-style plate on an assembly like this. It is very important to let us know the tooth count required to accommodate your transmission.

Some bell housings will not allow the use of a 168 tooth flexplate and will require a 153 tooth size. We usually have both available at no extra cost.

WARNING: The crank has a dowel pin installed. You must align the flexplate or flywheel to the dowel pin, as the assembly was balanced with this pin installed.

Balancing

We do our own balancing with CWT 5500 Series balancers . The CWT 5500 is the ultimate for precision balancing, and we have three of these in our machine shop. Over the years we've used many different balancing machines and much prefer the CWT line over any others.

Every rotating assembly we sell within 2 grams or less at no extra charge. ,

A balance sheet is included with your assembly.

Upgrade Options

We offer several upgrade options with this assembly. Many not only improve performance but also enhance the reliability and longevity of your engine, along with resale value.

To add upgrades to your purchase, use the link at the bottom of the page in the "Recommend Products" or look under the  "UPGRADES" category.

SFI Damper

The SFI damper offers an extreme level of safety against breakage and is very resistant to the slippage of the elastomer damping material. Made from a higher grade of steel and constructed differently, these dampers usually last much longer than non-SFI dampers and have a much better appearance.

Many drag strips require this on engines producing high horsepower levels. The SFI certification is laser etched into the side. Damper failure rates are much higher on engines using non-SFI dampers, especially those with HP ratings exceeding 450 and turning 5600 RPM or higher.

We strongly recommend this upgrade for those running hard.

Cost of the SFI damper upgrade is $69.50 .

Crank Polishing

Crank polishing extends bearing life, reduces oil temperature, and frees up a slight amount of 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 with better finishes on the journals will survive the break-in better and have much longer bearing life.

We perform a two-step process and bring the RA numbers down into the single-digit range.

Cost for the crank polishing upgrade is $38.50 .

Rod Proofing/Sizing

All rods, regardless of brand, should be checked for sizing on a Sunnen machine and corrected if needed. It is uncommon to find a complete set of rods with perfect sizing on both ends right out of the box.

Cost of this rod proofing/sizing upgrade is $45.00 .

Race Balancing

This upgrade is for those who want the engine to operate virtually vibration-free at high RPMs, which extends engine life and frees up a few more horsepower.

This somewhat labor-intensive procedure is not required, but the feel of an absolutely vibration-free engine at high RPMs is desirable for many.

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.

Cost of this race balancing upgrade is $125.00 .

Scat Competition Rods

The Scat Competition rods offer more security against rod breakage under hard use and feature ARP-8740 7/16" cap screws. With a 600+ HP rating, the slight cost to upgrade is well worth it in our opinion.

These rods require slightly less cam-to-rod clearance than the regular Scat rods. We use the very same Scat Competition rods in our 600+ HP 427 and 434 engines.

Cost of this Scat Competition rod upgrade is $65.00 .

ARP-2000 Rod Bolts

This upgrade is valuable as rod bolts are most likely to fail under hard use. When a rod bolt fails during high RPM, total engine destruction usually results.

The ARP-2000 rod bolts provide increased clamping force, keeping the big end of the rod stable and true to size. This upgrade is only available with the Competition rod upgrade.

Cost of this ARP-2000 rod bolt upgrade is $85.00 .

Scat 4340 Forged Crank

The forged Scat crank has a rating of 800+ HP, making it the ultimate upgrade for those wanting to run hard. Nitrous, blowers, turbos are not an issue with this crank. Even without such power adders, this crank offers great protection under the most severe conditions. This upgrade also comes with HP high-performance King bearings. If you decide to run power adders in the future, this upgrade is essential. The fatigue life of the 4340 crank over the cast nodular is greatly extended.

Cost of this forged crank upgrade is $460.00 .

Summary

Some of these upgrades are often requested by those building an engine without a machine shop. These upgrades are very valuable for those wanting to take longevity and durability to the next level. They are all bottom-end related, which is an area worth investing a few more dollars into, 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.

A Note from Skip White, Company President:

Many people have asked how we can sell this assembly for such a low price. The answer is that we buy our products at master WD (Warehouse Distributor) level for all the items in this assembly and sell directly to the public. We are a volume-based company, and our profit is based on sheer volume with a very low markup. This large volume purchasing allows us to buy products at a much lower price, and we pass these savings on to our customers. This is our main competitive edge.

Skip White