324(was 303) with #18 heads question

Old July 27th, 2017, 09:20 PM
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324(was 303) with #18 heads question

I accidently bought a full race 303 from the auction of a local speed shop. I was bidding on a sorta stock 303 that was in the lot with adjustable rockers.

I ignored this motor until i saw the girdle on the bottom end while loading it. I assumed until then it was a warm 371 or 394 looking at the heads. When i ran the numbers it has a 303 block with .030 over 324 pistons. It all looks like it was ran and since this was from the sale of Jim Greens speed shop(SOHC ford funny car guy) i doubt it is junk. Also these heads were ported all to heck, this should rev like crazy

Oh and to gloat i got not only the mostly stock 303, but this one too for a total of $250 and a hildebrant starter changover for $25 too

Anyway so my question, I cant find CC's for the heads to figure a ballpark compression ratio. I realize to get real numbers i just need to get out my burette, but do you guys have any idea? I gotta figure out if i need to start looking for huffer stuff or a log manifold for it.
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Old July 28th, 2017, 04:14 AM
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While i can't help you i think you scored a cool engine.
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Old July 28th, 2017, 07:02 AM
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Here is a good read on the early first generation hot rod engines, take a look you might find your answers here...Tedd

https://www.jalopyjournal.com/forum/...summary.47584/
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Old July 30th, 2017, 08:52 PM
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Originally Posted by Tedd Thompson View Post
Here is a good read on the early first generation hot rod engines, take a look you might find your answers here...Tedd

https://www.jalopyjournal.com/forum/...summary.47584/
Ive read everything i can find on there, but i cant seem to find that info. One of the machinists that worked at the shop seemed to think it was blown with hilborns but he had no other info.

I need to look at stuff a little closer to see If a blower intake can even be made to fit since the 394's have different length runners if i remember right and the only over the counter intakes that can fit are log's.

I know some intakes can be modified to fit, i have heard of guys chopping up J2 intakes for early motors. Other options are weld up style intakes.
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