I hope this isn't a dumb question..... But I think it prolly is :gt: I recently put together the 455 for my convertible. I used a set of heads that had been sitting on my shelf for quite a few years. They were "gone through" many years ago, but had been sitting for many years since. Anyways.... I ran a compression check and am a little concerned about one cylinder. I don't know if it's the head, or the block making it low. I haven't started it yet, or even installed the intake. Can I swap the old heads back on it to check compression with them, and re-use my head gaskets? Or should I buy new head gaskets if I swap heads? (even though it hasn't been started) Thanks
Rick, I think I've seen Greg Gessler write that he's reused intake as well as head gaskets several times. Being that you haven't started the motor, I think you would be safe in reusing the head gaskets.
Hmmm... no kidding? I just might have to swap the heads this weekend then just to see if it makes any difference. Thanks!
If your using an original intake pan, once it's been sinched down, that's it. The raised areas around the water jackets have been crushed and that gasket/pan should not be reused. You would probably have a real tough time getting it to seal again. Better to spend the $20 or so and get a new one.
I wouldnt try to reuse a composition head gasket. I have reused the stock type valley pan gasket over and over and over. No leaks, but if your decks and head surfaces are not square and true, a new stock type or composition will help to seal up any tolerances. Anyone know of a good way to keep the composition intake gaskets from ripping when intake is removed? I have tried all sorts of things, with little success.
Greg... Coat the gaskets with anti-sieze. Works great on intake and exhaust gaskets, and since I am sure your intake fit is correct, then there is no need for additional sealer with the comp intake gaskets. Especially if you machine everything down for the .060 ones. I put them on dry all the time, with just a touch of spray tack.. and they always come off cleanly.. I used to take the intake off every motor we built here, after it ran thru the dyno, because of so many cam bearing and lifter bleed down issues.. just to "eyeball" things. I do believe we have both those issues in hand now.. JW
