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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 1976Scottsdale on February 10, 2009, 09:41:43 PM

Title: Will an oval port manifold fit my 454?
Post by: 1976Scottsdale on February 10, 2009, 09:41:43 PM
Okay so I got my 454 home and was wondering, since I have pulled the intake a verified that it has the peanut port heads on it, I was wondering if an oval port intake will work with those heads or does it have to have an intake for the peanut port heads?  I plan to at some point get some better heads, but for the first year or two this thing is around... mostly while I finish school, it has to keep the peanuts.
Title: Re: Will an oval port manifold fit my 454?
Post by: 80stepsideguy on February 11, 2009, 02:41:03 AM
I think it is the same but you probably wont get the perfomance your looking for with them heads.Look for a set of 781 or 049 oval port heads.Those i am told are good heads for a big block.And square ports are good for 1/4 mile and higher RPMS.IIRC

thanks
pat
Title: Re: Will an oval port manifold fit my 454?
Post by: Captkaos on February 11, 2009, 11:03:26 AM
There isn't a specific aftermarket "peanut" port intake, so use the Oval.  I ran mine that way for a couple years until I got better heads.
Title: Re: Will an oval port manifold fit my 454?
Post by: 1976Scottsdale on February 12, 2009, 01:04:16 PM
Cool. I Found One Peanut Port Aftermarket Intake In Jegs But I Would Prefer Not To Buy Two Intakes If I Can Use One For Both.
Title: Re: Will an oval port manifold fit my 454?
Post by: 80stepsideguy on February 12, 2009, 01:29:43 PM
If you put the peanut port on a set of open chamber oval port heads the performance will still not be as good.Its like sucking a golf ball thru a garden hose(full metal jacket quote). Your better off staying with a stock intake for now or look on craigslist for a set of heads.I`m sure theres a set in your area for sale for like 300.00-500.00.

thanks
pat

p.s. i know you already know this but  remember big blocks ARE NOT CHEAP. I am piecemailing mine little by little before you know it you`ll have a engine that runs like a raped ape.