Circle Track Crate Engine 350/355 88958603 Description
Great Racing Power At A Reasonable Cost! This is a factory sealed crate engine designed for circle track competition. these engines come with a high rise dual plane intake manifold, stamped steel valve covers with racing style breathers, and an 8 quart dual kick out oil pan. Based on the ZZ4 street engine, this racing crate engine is a great value with it's 1053 forged steel crankshaft, aluminum heads with 1.94"/1.50" valves, hydraulic roller lifters,HEI distributor, and a standard rotation cast iron water pump. The base engine is a ZZ4 with the following parts changes: 8 quart circle track oil pan,special valve covers with breathers,special "Kool Nut" rocker arm nuts. sealed fasteners on intake and cylinder heads. Engine specs as follows:
- Horsepower- 355 @ 5250 r.p.m.
- Torque- 405 @ 3500 r.p.m.
- Max. Recommended r.p.m. 5500
- Compression ratio- 10:1
- Block- 10105123 four bolt main, cast iron.
- Crankshaft- 12556307 Forged steel
- Connecting Rods- 10108688 powdered metal
- Pistons- 10159436 high silicon aluminum with offset pins.
- Piston Rings- 12528817, Moly top, cast second
- Camshaft- 10185071 hydraulic roller- .474" intake lift, .510" Exhaust Lift, Duration @ .050'- 208 Intake, 221 Exhaust,Lobe C/L-112
- Cylinder Heads-Aluminum (Similar to 87'-92' L98 Corvette) 1.94" Intake, 1.50" Exhaust, 58cc heart shaped chambers
- Valve Springs- 12551483 LT4 Chrome Silicon
- Intake Manifold- 10185063 Aluminum high rise, dual plane, with square bore & spread bore carb. bolt patterns
- Distributor- 93440806 HEI
- Spark Plugs- Delco FR5LS gapped at .035"
- Fuel- 92 Octane