Intake ports, Oval or not? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

So.Cal.Super · 03-26-2009, 03:09 AM

I am looking to buy a new intake for my 72 402 BB and I think it needs to be oval port. I have even seen chevy oval port specified. I know my heads are oval port on the exhaust. would they be the same on the intake?

I am trying to buy before I pull off the old intake.

Thanks.

JimKshortstep4x4 · 03-26-2009, 07:00 AM

Unless someone has changed the heads and intake oval ports would be the ones you have.

You can always verify whether or not the heads are oval port or not by looking up the manifold casting numbers on your engine. Or the head casting numbers, (under the valve covers) can be used to verify whether they are oval port or not.

Jim

So.Cal.Super · 03-26-2009, 09:03 AM

Thanks!

03-26-2009, 03:09 AM	#1
So.Cal.Super It'll Buff Out! Join Date: Apr 2007 Location: San Diego Posts: 603	Intake ports, Oval or not? I am looking to buy a new intake for my 72 402 BB and I think it needs to be oval port. I have even seen chevy oval port specified. I know my heads are oval port on the exhaust. would they be the same on the intake? I am trying to buy before I pull off the old intake. Thanks. __________________ "Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB

03-26-2009, 07:00 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Intake ports, Oval or not? Unless someone has changed the heads and intake oval ports would be the ones you have. You can always verify whether or not the heads are oval port or not by looking up the manifold casting numbers on your engine. Or the head casting numbers, (under the valve covers) can be used to verify whether they are oval port or not. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

03-26-2009, 09:03 AM	#3
So.Cal.Super It'll Buff Out! Join Date: Apr 2007 Location: San Diego Posts: 603	Re: Intake ports, Oval or not? Thanks! __________________ "Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB



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