ATK High Performance Chevy 632 Short Blocks
ATK High Performance Chevy 632 short blocks are based on dyno proven combinations built with name brand parts. Each short block is hand-built and inspected for precision tolerances. Rotating assemblies are balanced; and stroker builds are oversize of stock bore and stroke. Short blocks are shipped strapped on a wooden pallet crate.
Engine Specifications:
* Block: Dart Big M Sportsman 4-bolt main 2-piece rear main seal
* Bore/Stroke: 4.600 in. x 4.750 in.
* Displacement: 632CI
* Crankshaft: Scat 4340 forged internally balanced
* Rods: Scat 4340 forged H-beam with ARP 8740 bolts
* Pistons: 2618 forged +3.4cc flat tops
* Compression ratios: 112cc = 11.3:1 / 118cc = 10.8:1 / 121cc = 10.6:1 (can vary due to deck height/gasket thickness)
* Rings: Plasmamoly
* Camshaft bearings: Dura-Bond, installed and clocked to OEM position
* Freeze plugs: Brass, installed and sealed
* Oil galley plugs: Installed and sealed
Recommended Components:
* Balancer: Internal balance
* Flexplate / Flywheel: Internal balance
* Head gasket: .038 in. or per application
Engine Info:
* Oil: 10W30 Conventional / Non-Synthetic for first 3,000 miles
* Oil filter: Wix or K&N per application
* Head gaskets: .038 in. or per application
Applications
