oval or rectangular ports - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 04-22-2004, 09:13 PM
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oval or rectangular ports

i got a 73 chevy with a stock 454, and was wondering if anybody knows if it has oval or rectangular ports. would be nice to know, so i don't have to yank the intake manifold off, then put it back on, just to place an order one weekend, then do it all over again, when the new one arrives.

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post #2 of (permalink) Old 04-22-2004, 10:14 PM
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Re: oval or rectangular ports

order both and return one? thats my best idea. i have no clue
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post #3 of (permalink) Old 04-25-2004, 08:16 PM
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Re: oval or rectangular ports

It is an oval port, only high po cars came with rect ports. If you really wanna be sure, yank a valve cover and get a casting number, if it is a 781 or 049 casting, you should get a performer RPM intake cause the ports are quite big on those heads.
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