How to identify what crankshaft you have

[transman]

I have attached a PDF file that might help those wondering what type of crankshaft you have when the transmission is out. Also, there are diagrams, showing you the decals Chrysler put on converters to show if it's a high or low stall and if it's a lockup or non lockup converter. Hope this helps some of you.

 

[Dartswinger70]

I am going from memory but and I m sure someone will correct me. I think id be looking at the balancer and converter for balanced vs un balanced also i think each has a different bolt offset but i may be wrong about that. That determines balance if its forged vs cat Im not sure if the marks are on the flange I think they aren't the flange and snout are machined etc. so no forging marks etc. if the crank is out there is numbers on it etc.

 

[HemiSSDart]

I am going from memory but and I m sure someone will correct me. I think id be looking at the balancer and converter for balanced vs un balanced also i think each has a different bolt offset but i may be wrong about that. That determines balance if its forged vs cat Im not sure if the marks are on the flange I think they aren't the flange and snout are machined etc. so no forging marks etc. if the crank is out there is numbers on it etc.

Numbers are not on all cranks, DAMHIK! I sold a forged 383 crank to a friend and he took it in to the machine shop to have it checked out and it turned out to be a forged 440 crank I did not know I had! Cast cranks DO have numbers on them...

 

[Dartswinger70]

Yeah I must admit I've never played around with big blocks too much. In the old days all big block guys tossed the small blocks so id get 318s 360s for free now the 340 you had to lay out some bucks for...Ive seen numbers on forged 340 cranks etc.