64 #1 heads on 72 350
January 17th, 2020, 05:13 PM
#1
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Join Date: Mar 2012
Location: Quad cities Illinois
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64 #1 heads on 72 350
I am trying to decide what engine to put together for my 64 f-85. I have the original 330 that needs rebuilt and a 72 350 that needs freshened up. What would the compression be if i installed the #1 heads on the 350? Do the 64 heads flow better than the 72’s? I am going to be running the stock exhaust manifold and carb, intake that is original to the 64.
January 17th, 2020, 07:17 PM
#2
Out of Line, Everytime😉
Join Date: Dec 2006
Location: Melville, Saskatchewan
Posts: 9,142
The heads flow basically the same, the #1 heads should have smaller chambers. You will be at 8.5 to 1 at best with Felpro head gaskets with the stock 72, 24cc pistons. Make sure the rocker shafts are in good shape, no replacement parts exist.
January 18th, 2020, 10:33 AM
#6
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Location: Medford, Oregon
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If it were a 1964 Cutlass I'd say go with the 350 or even a 455. Since this is going in a 1964 442 I'd be more inclined to stay original as much as possible. Most of us don't ever plan to sell our cars. But if life changes an original car will have more potential buyers than one that's modified. That's my 2 cents anyway! John
January 20th, 2020, 01:34 PM
#7
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Location: Bradenton, FL
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The heads flow about the same. Stick a big valve in whatever you do. The #1 heads have ~5cc less chamber volume than the later heads. Biggest issue I see is the rocker shafts but if they're in good shape, I'd send 'em. If you wanna travel a little bit, there's a guy near Detroit with a set of #3 or #4 heads that have been magnafluxed and would take the "normal" pedestal mount rocker arms from the factory or a modern roller rocker.
January 20th, 2020, 05:04 PM
#8
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Heard....decades ago when an Olds dealer found me one of the few sets of shaft rockers in existence that pedestal rockers and pushrods could be installed on the '64 330 heads if we couldn't find shaft rockers.
Is this true? Can it be done without modifications?
Is this true? Can it be done without modifications?
January 20th, 2020, 06:05 PM
#9
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Join Date: Mar 2007
Location: Northern VA
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The #1 heads do not have the provisions for pedestal rockers.
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