Build a Better Bottom End with Scat Crankshafts and Connecting Rods

A performance engine is only as good as the stuff that makes up the rotating assembly. Skimp on the crankshaft and connecting rods and you won’t be making horsepower for long.

Avoid that scenario by using a Scat crankshaft and connecting rods. We support a lot of engine builds in magazines and project cars, and the majority of those engines have Scat parts in them. That’s a ringing endorsement if we’ve ever heard one.

Cast Crankshafts
Scat’s standard weight cast cranks are ideal for mild street performance stroker engines. The 9000 Pro Comp cast stroker cranks are for more aggressive street and race engines. They are lighter than the standard cranks, allowing engines to rev quicker. That makes them ideal for more serious street engines, circle track racing, and drag racing.

Forged Crankshafts
All Scat forged cranks are made from 4340 non-twist forgings. They’re precision ground, heat treated and nitrided, and feature polished rod and main journals with large radii, chamfered oil holes, and lightening holes on the rod journals. Your choice of:
• Standard weight
• Lightweight with contoured counterweight edges
• Super-lightweight with pendulum-cut counterweights to further reduce rotating mass and oil windage
• F43 ultra-lightweight cranks with pendulum-cut and profiled counterweights, gundrilled main shaft, and lightening holes on all journals

Connecting Rods
Summit Racing offers several types of Scat rods, all made from 4340 steel:
• Stock replacement I-beam with 3/8 inch ARP WaveLoc rod bolts
• Pro Stock I-beam with ARP cap screw bolts
• Pro Comp I-beam with polished beams to eliminate street risers and 7/16 inch ARP cap screw bolts—clearanced for stroker applications
• H-beam standard weight—strongest Scat rod available, ideal for supercharged and nitrous applications
• Ultra-Lite H-beam with big end lightening hole to reduce weight without compromising strength—clearanced for stroker applications

Scat cranks are available for Chevy, Ford, and Chrysler V8 engines. Scat connecting rods are available for AMC, Chevy, Ford. Chrysler, and Pontiac V8, plus other engines from Honda, Nissan, Mitsubishi, and Subaru,

You can also get a bottom end in a box with a Scat Rotating Assembly. They include a Scat crank and rods, a choice of cast or forged pistons, a piston ring kit, and bearings. The assemblies are available for Chevy, Ford, Chrysler, and Pontiac V8.