Correct head gasket

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Old Sep 25, 2008 | 12:29 PM
  #1  
77 oldsMAbrotha's Avatar
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Toliver
 
Joined: Jun 2007
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From: Indianapolis
Correct head gasket

After a year I finally rescued my #7 heads from the machine shop now they are ready to be sat atop the 77 block. My question is, "do I use the 77 head gasket or the 71? If I had to guess I'd chose 71, but this is no time to make ASS_umptions. And is there a brand that is preferred over others?
Thanks to everyone who reply

Last edited by 77 oldsMAbrotha; Sep 25, 2008 at 12:32 PM.
Old Sep 25, 2008 | 03:23 PM
  #2  
joe_padavano's Avatar
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Joined: Mar 2007
Posts: 50,815
From: Northern VA
Originally Posted by 77 oldsMAbrotha
After a year I finally rescued my #7 heads from the machine shop now they are ready to be sat atop the 77 block. My question is, "do I use the 77 head gasket or the 71? If I had to guess I'd chose 71, but this is no time to make ASS_umptions. And is there a brand that is preferred over others?
Thanks to everyone who reply
I was ready to say they were the same, but I checked and they're not. Fel Pro 8171-PT1 fits all Olds V8s 330-455 through 1976. Fel Pro 8506PT fits 350s for 1977-1980. They look the same in the pictures (for what that's worth) so the only difference I can imagine is the holes for the head bolts. If that's true, you'll want to use the 77-80 gaskets due to the larger 1/2" head bolts in you 77 block. You DID have the holes in the early heads enlarged, didn't you?
Old Sep 25, 2008 | 09:56 PM
  #3  
88 coupe's Avatar
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From: Southern CA
Originally Posted by 77 oldsMAbrotha
........ "do I use the 77 head gasket or the 71 ........
Always use the gasket for the block.

Norm
Old Sep 26, 2008 | 06:50 AM
  #4  
77 oldsMAbrotha's Avatar
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Toliver
 
Joined: Jun 2007
Posts: 32
From: Indianapolis
Yes, heads were drill for 1/2" bolts...little something learned @_"CLASSICOLDSMOBILE.COM"So, it's the gasket for the 77, got it!
Thanks again!
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