Skip White Performance - We have the best prices you will ever find for aluminum heads, rotating assemblies and strokers
Skip White Performance
1910 Brookside Lane
Kingsport, TN 37660

M-F 8a-7p EST
Sat 10a-3p EST

5 star rating
260,500+ reviews!

 423-722-5152

SCAT SBC CHEVY 350 383 5.7" SCAT PRO-STOCK CONNECTING RODS I-BEAM BUSHED # 25700

$259.50

Available

35 customer reviews  



Product Information

UPC351305992490
Product TypeShipped Product
Shipping Cost $10
Number of reviews 35

SBC SCAT PRO-STOCK 4340 ALLOY CONNECTING RODS 5.7" I-BEAM BUSHED, 12 POINT ARP CAP SCREWS. 500 HP RATED.

 photo 2600SCATRODS.jpg

SCAT-ICR5700 BRONZE BUSHED CONNECTING RODS WITH GENUINE ARP 8740 CAP SCREWS ARE NOW USED IN ALL ROTATING ASSEMBLIES AND 383 STROKER ENGINES WE BUILD.

Our Scat rods are all made from heat treated 4340 chromoly steel. Eagle I-beam rods and many of the no-name brand I-beam rods are made from 5140 alloy. This alloy cannot compare to 4340 in strength and hardness. We have seen many offering the no-name rods with no-name bolts in them. These non-branded bolts thread poorly into the rod and have been known to fail on many engines. From our past experience, we have found these rods to be inferior as compared to the Scat rods in many ways. Inferior rods and bolts can also cost a great deal of money in additional machine work to correct incorrect spec sizing or roundness. Balancing can also be difficult when the rods are unusually heavy or light. The Scat rods have a level of quality that we consider well worth the slightly higher price.

Our experience in years past with no-name rods 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 assemblies and engines.

The critical sizing and ARP bolt installation is done at the Scat facility in California. The rods go through a complete inspection. Failures or quality issues are near non-existent. We have built several thousand engines using the Scat rods, and we simply never have rod failure.

 photo 2600SCATRODS-Copy.jpg  photo 2600SCATRODS-Copy2.jpg

The Scat rods do have genuine ARP 8740 cap screws and they offer excellent block clearance in the lower end of the cylinders, and very decent cam clearance.

Genuine ARP 8740 cap screws.

 photo arp-2566301_3530201.jpg

Cams that are over 550 lift may require that the rods be clearanced slightly.

See the picture below showing the exact location where the rods are to be cam clearanced should it be required.

We are now using these rods on all of our 350, 383 and 406 engines.

These rods weigh in at approx. 610 grams each, and for those purchasing an Eagle or Scat crank, this rod weight makes balancing very easy and usually requires very little removal of material from the crank when coupled with medium to light weight pistons.

Pictured below is the exact location where these I-beam rods are to be ground should it be necessary. The flat half moon spot directly above the bolt is the area we ground. The picture below is very large, giving the impression that the amount removed was larger than it was in reality. The area ground is actually the diameter of a small shirt button divided in two. We left the picture large to give you a good idea of where to do the clearancing should it be required.

With the rod ground as shown, clearing a 580 or larger lift cam is not a problem. The amount of metal removed is approx. 1-2 grams and will not affect balancing in the event you do this after your assembly has been balanced. This procedure only has to be done on one side of each rod for those running large cams.

 photo IMG_0430.jpg

Balance matched

Yes

Big End Bore Diameter (in)

2.2250 in.

Big End Width (in)

0.940 in.

Cap Retention Style

Cap screw

Clearanced for Stroker

Yes

Connecting Rod Bolts

I-beam ARP 3/8" 8740 chromoly steel, 12 pt. head

Connecting Rod Length Center to Center (in)

5.700 in.

Connecting Rod Material

Forged 4340 steel

Fastener Yield Strength (psi)

200,000 psi

Inspected

Yes

Pin End Bore Diameter

0.927 in.

Rod Journal Diameter (in)

2.100 in.

Weight Matched Set

Yes

Wrist Pin Style

Bronze bushing

We also offer the Scat Competition Series 5.7 rods in our other listings. This is what our company founder had to say about them:

For those wanting the extra security against rod or bolt failure, we have the solution without having to move up to the over-weighted H-beam rods.

The Scat Competition Pro series I-beam rods are absolutely the best insurance against failure considering the low cost to upgrade. The regular Scat rods in this auction are excellent, but the Pro-Competition series rods are slightly lighter and have been cnc profiled to remove the parting lines and shot peened to relieve all stress risers. The rod body is also designed like a billet rod and is actually stronger in certain areas than the regular I-beam rod even though it is lighter. They have shortened ARP 7/16 cap screws and are especially designed to clear large cams with little or no clipping. They are our favorite for many reasons, but mostly for the lighter weight and added protection against rod breakage under high rpm. The lighter weight reduces the rotational and reciprocating mass to a considerable degree also. This has many benefits, including better engine acceleration and less stress on the crank.

To give you an idea of just how much faith we have in the Scat Pro-Competition rods, we use them in our SBC 427 and 434 engines with a 4.00 stroke crank. These engines have a much longer stroke crank than a 350 or 383, heavier pistons, and make up to 625 hp and turn up to 6800 rpm. We've had zero failures on over 300 of these engines built. Considering they do this well in the 427/434, they would most likely never fail in a 350 or 383 engine under any condition.

To be clear, the Scat Pro-Competition rods are offered in our other listings. The regular Scat rods offered in this listing are excellent rods for those building an engine that will not see frequent high rpm levels or built to higher than average horse power levels. See our other listings to check out the full story on the Scat Competition series rods.

Before your engine is assembled, we strongly suggest that you have the rods checked on a Sunnen machine for critical sizing on both ends. We recommend this with any rod regardless of cost or brand. It is not uncommon to find some rods could use a slight bump through the hone for perfection in sizing and roundness. If the rod journal on the crank is slightly thick, you may want to add this clearance to the rods to compensate for this.

We also offer these rods as a proofed set to match every journal on your crank with the correct clearances. This is an excellent choice for those wanting to build the engine on their own.

See all reviews

Customer Reviews