crankshafts ???
crankshafts ??? what are the difference in lt1 crankshafts and gen1 sbc 1 peice rear seal crankshafts having a hard time finding and forged crankshaft for lt1 . i'm planning a 355 or 383 getting my block work done now need help with this i also read alot of problems with cast cranks and wonder if anyone has problems with the forged... also what can i spin a all forged 355 or 383 to safely ... with n20
As long as it's for a SBC with a one-piece rear main seal, it will work. There are no LT1-specific crankshafts.
Forged is always the way to go for N2O/boost.
RPM limit depends on a lot of things. If we rule out the valvetrain, transmission, a budget, and everything else, you could build a bottom end to survive spinning to the moon.
Forged is always the way to go for N2O/boost.
RPM limit depends on a lot of things. If we rule out the valvetrain, transmission, a budget, and everything else, you could build a bottom end to survive spinning to the moon.
kewl well i was goin to used forged h beams and forged pistons .. i got comp magnum rr 1.6 ratio magnum one peice push rods if i do the 355 i was thinkin bout goin back with the 503 or gm 847 duno but has anyone every done a 4 7 swap cam in a lt1 do they make it i know they do for sbc but lt1 being efi i duno it would be fairly straight forward swap 4 7 injector and plug wires ... ?
Valve springs should be near the top of your list as a limiting factor for high rpm's. Most 4340 forged cranks are rated up to around 8k rpm, but thats just he crank and they all are different.
4-7 swaps do not work well with the LT1, it has to do with the intake and making certain cylinders run lean. Sorry I don't remember the specifics as to which cylinders got worse, but overall disadvantages outweigh the advantages when using an LT1 intake.
4-7 swaps do not work well with the LT1, it has to do with the intake and making certain cylinders run lean. Sorry I don't remember the specifics as to which cylinders got worse, but overall disadvantages outweigh the advantages when using an LT1 intake.
No, you want large journal it has to do with the size of the crankshaft where the rod connects to it. Idk if they even made small journal 1 piece I thought they were all 2 piece.
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