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Thread: Scout II heads

  1. #1
    Join Date
    Dec 2017
    Posts
    1

    Default Scout II heads

    Hi new to this forum. I have a 76 that has a 304 and I believe a mechanic I hired put 345 heads on it now I have no compression! I noticed when I pulled the valve cover the #1 cylinder the intake valve is tight and won't close! My ? is are the heads interchangable?

  2. #2
    Join Date
    Feb 2009
    Location
    Torrance, CA
    Posts
    154

    Default

    Quote Originally Posted by Mikew View Post
    Hi new to this forum. I have a 76 that has a 304 and I believe a mechanic I hired put 345 heads on it now I have no compression! I noticed when I pulled the valve cover the #1 cylinder the intake valve is tight and won't close! My ? is are the heads interchangable?
    The 345 heads can be bolted to the 304 block but the 304 intake manifold will not seal against the 345 heads. The 345 intake manifold won't fit the 304 block because the 304 and 345 are different height blocks = the 345 is wider between the heads. Go back and talk to your mechanic.

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