Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

engine swap

Discussion in 'The Garage' started by August, Feb 20, 2006.

  1. August

    August Registered Member

    Joined:
    Nov 27, 2005
    Posts:
    20
    Likes Received:
    0
    Location:
    Spain
    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
     
  2. 79k20350

    79k20350 3/4 ton status

    Joined:
    Nov 22, 2004
    Posts:
    7,757
    Likes Received:
    1
    Location:
    Ct
    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
     
  3. gravdigr

    gravdigr 1/2 ton status

    Joined:
    Apr 15, 2003
    Posts:
    1,129
    Likes Received:
    0
    Location:
    Tyrone, PA
    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.
     
  4. August

    August Registered Member

    Joined:
    Nov 27, 2005
    Posts:
    20
    Likes Received:
    0
    Location:
    Spain
    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
     
  5. 76zimmer

    76zimmer Flyin Rat Premium Member GMOTM Winner

    Joined:
    Nov 14, 2005
    Posts:
    23,034
    Likes Received:
    1,349
    Location:
    Kzoo, Mi
    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.
     

Share This Page