engine swap

[August]

Hello,

I have a 1979 Chevrolet Silverado with a broken 350 engine (overheat, broken pistons, bended conecting rods). I also have a good running but ugly 1980 Pontiac Lemans with a 305 2bbl... I was told that the 305 is a chevrolet engine. Can I put this engine in the Silverado? I don´t know if the Pontiac has a th-250 or a th-350, but will the 305 match the th-350 silverado transmission? Is a straight forward swapping or it needs hammer and welding?

Thanks for your help,
August

 

[79k20350]

it will drop right in, a direct bolt in. that being said, dont waste your time, find a cheap 350 either from a junkyard or classifieds and throw that in, 305s are very slow in stock form

 

[gravdigr]

I agree with the idea of getting a 350. I have a 305 in my 86 k5 now and a fresh 350 waiting to go in...unfortunatly with almost 130k miles the 305 doesn't even tap. At worst it diesels a bit but that could be hot plugs. 305 may be a bit weak but the bastards are durable. I can't kill this motor and I been tryin.

 

[August]

Thanks for your replies. Well, I forgot to say that I am not in the US, I am in Spain, so I have not a big offer in engines...

I may have a 350 bit it is from 85 and it is bolted to a 700 r4, is it a problem?

Thanks again,

August

 

[76zimmer]

The exhaust manifolds, and oil pan dipstick are probably different. Check the bolt holes in the heads, to see if you have a combo that will bolt up, the dipstick is probably on the pass side of the 85 engine.