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Need some opinions on an intake for my 454

764 Views 6 Replies 4 Participants Last post by  427mike, 
4
Kind of at stand-still on which intake to get for my 454. Here are the specs:
.030 454, major hogged out 990 rectangle port heads with 2.19s and 1.88s, 10 to 1 compression, 262/272 @.050 comp solid roller with 680/714 lift, Unilite w/6al box, 2 inch primary headers, TH400 with 3500 stall and 4.56 12 bolt...66 Chevelle SS with 31 inch tall tire...Car weighs roughly 3200 pounds...It's a weekend street car and occasional bracket car

I was thinking of a dual plane Weiand Stealth or a single plane Holley Strip Dominator...I've even thought of an old Twisted Tarantula...What do you guys think?
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Dart Single plane intake
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GOSFAST said:
Mike, just a couple opinions here, my own!

The cam is a bit on the "big" side for a 10:1 unit, BUT, if you happen to have about 340/350 CFM going in the heads it will "tweak" by!!

One other "but" though, if the car weighs more than your "guess", then you will be somewhat disappointed, I believe!

I say that because we are involved with a '66 SB, T-350, 12 bolt ladder-bar rear and this "ride" tips the scales at 3450 WITHOUT the driver!

Now finally, on the "flip" side, a simple head change later to a 112/114 and you will be in the "ballpark" with the cam choice!

Go with the 300-5 Holley, we have similar 454's (slighty less cam, non-roller, slightly higher compression, 11.25, closed chamber iron heads,) making very close to 625/650 HP with little effort!

Thanks, Gary in N.Y.

P.S. Maybe just elaborate about how the car comes in that posted weight?? Curious!
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Why is the cam too big? He has fair compression, Ported heads {assuming they are max ported correctly per the applicaton} and a good sized rear gear

We ran a 283/291 @.050 in a 331cid, It ran fine - Not your everyday street car, not even your typical weekend car or tor car but it goes down the track A-B with impressive times for a heavy car at 3,600-3,700pounds
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