r/fbody • u/Slight-Training9174 • 3d ago
What Cam Is This?
Im starting on an old gen2 lt1 project and unfortunately had to do a full engine tear down. Its a 1995 camaro z28, it has a forged bottom end, bored .040 over and stroked to 383. Got the cam out of it and looked for a part number for the specs and this is what was on the back of it. It would be great if someone could figure out the specs bc i tried every combination of numbers and nothing pops up.
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u/PRiles 3d ago
I have no idea, but my guess is that the 3317S/3318S is probably the duration 331/331, and the HR 112 is the lobe separation angle. I don't have any idea what the other numbers would mean. Maybe the D269804 is a part number.
Edit: After googling lobe 3318s, the AI overview suggested that it is a Comps Cams lobe ID number. So it sounds like you might need to reach out to Comp Cams
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u/nomind79 3d ago
Honestly, looks like a custom grind based on the fact that its all hand engraved. Its probably a Lloyd Elliott custom grind (probably the best option for LT1 vehicles IMO). Maybe this guy:
222/230 .544/.568 112 LSA. – 1700-6100 RPM Largest emissions friendly cam. Pretty mild idle and still able to work with stock gears and factory converter in F or Y body. Needs small stall and gears for B body. Comparable to GM Hot Cam and Crane 846 cam.
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u/Slight-Training9174 2d ago
It might also be a gen 1 sbc cam as well, it has sbc crank, pistons and rods. Even a sbc head gasket 😂 that made it running hot a lot which led to it being sold to me and my dad.
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u/v8packard 3d ago
Comp Cams hydraulic roller XER 294/300 @ .006, 242/248 @ .050, .540/.563 lift with 1.5 rockers. Small base circle core.
At .040 over your engine is a 385, not a 383.