Ok guys here is my question... My buddy has an 88 trans am with the 305 tbi in it, just the other week a rod bearing went in it so now it has to be rebuilt. Now before you say anything about ditching the 305 or anythihg like that dont bother, he wants to rebuild his 305, so with that said my question is whether a 350 crank for the 87-95 350 truck engines will work in his engine, or will the only crank that will work be the 305 lo3 crank? I have never installed a new crank in a car so im not really sure how this works, or if this would work or not, please give me a little help here. Second my question is does anyone know where to get a decent priced crank, the 350 it will will work or the 305 crank? let me know, thanks guys

 

The 305 and the 350 have the same stroke. The only thing is, is that came out of an S-10, so the crank will be counterweighted differently. Because obviuosly the 350's pistons are a little bit heavier, and so the crank has to be counterweighted a little more. You can put that crank in their, but it would be extremely wise to get it balanced at a machine shop, they will drill it out or whatever they need to do, and get it balanced right. As for if that 350 crank and your original crank have the same peice rear main seal, I dont know. You will need to check that out too. Good luck.