Hi folks. First, I want to apologize for not being on here in a while, that is a subject for another thread. For now, I have a question about my engine build.

I'm rebuilding my 350 block, 2 bolt main. I have a few cranks to choose from, all having the same cast numbers. I understand that the 305 and the 350 cranks have the same numbers, with the main differences being in the balance.

 My question is...How do you tell the difference? Any input would be appreciated.

Thanks, folks.

Alan

Good to see you back, Alan!
I never realized the cranks had the same cast #, but they certainly do. I don't know for certain how to tell which is which, but I would assume if they were side by side, the difference in the crank throws/counterbalance weights would be noticeable. Strange that GM would cast them with the same #.....

i would imagine they are the same.  once it has been balanced it will be different.

Thanks Joel, Ben. Good to be back.

Nosal1, thank you for the info. That is more than I found by searching for it. I will see if that helps.

Thanks guys,

Alan

Hey Ranger-how have you been. We're still driving those POS Impalas in our Dept. We even had Chevy Reps. there to address all the issues we're having with the cars...they were no help.

How's that for customer support?

Nothing further I can add here but wanted to say "what's up Alan!!!!"

welcome back!!

Paul