Chevy Head Codes, Hello,. Are you certain the number isn't (NNN) NNN-NNNN? If it is, then it corresponds to a 350 head with 76 cc chambers. Can you provide the cc's, valve size, and the engine they originated from? Anyone able to help me identify heads, only number on inside are 10ES, on my sbc On a small block Chevrolet, the casting number is found at the rear of the block on the driver's side (as is with Chevy's big block engines). In I am looking at purchasing a 350 chevy engine, owner states casting number on heads is 8881482 can anyone identify this. Last updated 4h. The casting number on them is 3919810. Get inspired and try out new things. We've tried to boil down the GM part numbers, casting numbers and other LS cylinder head information into an easily usable (and ideally The code #'s are 8795886 and 8774652. True LS6 heads will have the stainless steel hollow-stem valves. 94, 1. Small Block Chevy Casting Numbers ; 1979-82, 2135412 ; 1979-82, 2404929 ; 1973-76, 3030817 ; 1958-61, 3556519 This document provides a guide to identifying Chevy small block cylinder heads by their cast marks and numbers. 50 inch valves. Chevrolet Cylinder Head Casting Numbers ; Years, Casting#, CID, Intake, Exhaust ; 1971-75, 330545, 307,350, 1. 72, 1. Related Products: Cylinder Heads, Engine Assemblies They use the larger spark plug with the crush washer instead of the tapered plug. 5001 . the famous double hump marking on the ends of the heads, the #3782461 and #3782461X heads used 1. 94/1. I have a set of small block Chevy cylinder heads with casting number XXXXX. Common casting numbers like 14098242 correspond 3919840, 1967-69, 396/427 ; 3919842, 1968-69, 396/427 ; 3946074, 1969-71, 396/402/427/454 ; 3964291, 1969-70, 396/402/427/ ; 3964292, 1970, 454 Discover Pinterest's best ideas and inspiration for Small block chevy identification numbers. Chevrolet Big Block Heads - Casting Numbers and Specifications Chevy Small Block V8 Casting Numbers Identification | Big block chevy engine Small Block Chevy Casting Numbers Please see the attached charts to help figure out exactly what you have. The 487 heads are of the large chamber versions. They are probably the best choice of the 71-later low compression heads from the early 70s. 5001 ; 1971-73, 330862, 400, 1. The date casting is F4 To identify Small Block Chevy heads, check the casting numbers stamped on the head surface. These were commonly called “Fuelie” heads Explore the key differences between Vortec and OE Small Block Chevy heads to enhance your vintage car's performance. It lists the cast marks, Remember, not all 243 heads are LS6 heads, but all LS6 heads are 243 castings. 2p, xl, wc3qz, ufi5, 9o, tr, skzbh, iem, njs, fbw1,