Z28 X ram (top) released to race teams in '67 w/o casting#, did have Winter Foundry 'snowflake" logo. Z28 X ram (bottom) released to race teams in '67 w/o casting# Small Block Chevy Intake Manifold Casting Numbers NOTE 4: use with 6.0" rod in cylinders 1, 4, 5, 8. Cast-iron manifolds have the casting number and casting date located on one of the rear intake runners behind the carburetor flange. 12558062 casting number with Hecho En Mexico in the valve. NOTE 3: use with 6.0" rod in cylinders 2, 3, 6, 7. Cores Wanted: Mexico Small Block Chevy Vortec Heads Usually off the Chevy 602 Crate Motor. NOTE 2: use with 5.7" rod in cylinders 1, 4, 5, 8. NOTE 1: use with 5.7" rod in cylinders 2, 3, 6, 7. Part numbers are for standard (Std.) bore sizes. P= Pressed-on pin F= Floating pin., Hyper = Hypereutectic cast pistons, 4-bolt main casting number 010 Blocks & casting number 041 or 186 heads.
Chevy small block intake casting numbers series#
Small Block Chevy Crankshaft Casting Numbers The Chevrolet small-block engine is a series of gasoline-powered. This means the bolt pattern on the end of the crankshaft was reduced to 3.00". Not all cross-drilled cranks are tufftrided.īeginning in 1986 all production small block chevy engines used a 1 piece rear main seal. Many cranks used in severe applications are cross-drilled, which helps ensure constant oiling to the main bearings. When a crank is tufftrided it will have a dull grey color to it. Some forged cranks are tufftrided, which is a chemical heat treating process that hardens the bearing journal surfaces.
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Since forged cranks are more expensive to produce, they are generally used only in high performance or severe duty (truck) applications.įorged crankshafts are easily identified vs cast because a forged crank will have a wide parting line running down the length of the crank, while the cast crank has a thin parting line. Two types of crankshafts are offered, cast nodular iron and forged steel. Block casting numbers for small block Chevrolet V8 engines (265-283-327-350-400). Small Block Chevy CrankshaftsAll crankshafts have a casting number located on one of the rough finished throws or counterweights towards the front of the crank. Chevy Chevrolet small block V8 engine casting numbers. A = Chevelle/El Camino, B = Caprice (Full Size), G = Monte Carlo, F = Camaro, H = Vega/MonzaĬ/K = TRUCK, X = Nova/Chevy II, Y = CorvetteĬlick here for more information on body types/styles.
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