Aluminum Intake Question-BB 454
Thread Starter
Racer
Joined: Nov 2014
Posts: 359
Likes: 62
From: Michigan
Aluminum Intake Question-BB 454
I am looking for an oval port aluminum intake for my 72' BB Corvette. Is anyone using this GM intake- 12363420,this a new still in production unit and works with a QJ, does it clear the hood and can I use my stock air cleaner assmbly? I attached a picture of my engine and the intake for reference. This intake says RPM range is 1500-6000,which should work well for BB guys if it clears Thanks for the time Rich
Last edited by spitfun; Mar 27, 2017 at 09:05 AM.
Instructor
Joined: May 2016
Posts: 178
Likes: 22
From: Vermont
I spoke with Edelbrock & they told me the only intake they make that fits under the hood is their Torker II. I installed it on my 71, 454 & still had to adapt an aftermarket air cleaner. There's not much room under there.
Take some silly putty and place in on top of the cleaner. Close the hood & measure.
Take some silly putty and place in on top of the cleaner. Close the hood & measure.
Race Director
Joined: Mar 2003
Posts: 11,608
Likes: 780
From: Eustis ( Area 51 Bat Cave ) Fl
Fwiw,
My 454 came with a tokker 2 and the guy gave me a performer, saying the performer wouldnt fit under the hood,
I didnt like what seemed like lack of low end, i installed the performer and man did it wake up low end,
Wasnt there a factory dual plane that fit under tge hood?
My 454 came with a tokker 2 and the guy gave me a performer, saying the performer wouldnt fit under the hood,
I didnt like what seemed like lack of low end, i installed the performer and man did it wake up low end,
Wasnt there a factory dual plane that fit under tge hood?
Last edited by The13Bats; Mar 27, 2017 at 12:24 PM.
Thread Starter
Racer
Joined: Nov 2014
Posts: 359
Likes: 62
From: Michigan
How about modifying the LS6 intake to fit oval ports-can this be done? Or,in the post above (The13bats) says the Performer fits his car-is that the original Performer,not the Performer RPM? Rich
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
The LS6 intake is also square bore flange for a Holley carb.... You can modify the ports with epoxy or welding to better match with oval port heads but at most street cars power level it's a waste of time.
The early 68-72 cars have very little room under the hood with a BBC.... even the factory LT1/BB hoods are really short. You can fit a BBC Performer intake.... There is a member on here that has one and I saw pics when I helped him find a different air cleaner assembly.... but you'll need a really deeply dropped base air cleaner assembly. I don't think that GMPP intake or the Performer RPM would go under any early hood except the L88.
The 73 and later long style stock hoods have more room. You can fit a BBC Performer RPM under one of them no problem.... I saw this thread a few years ago and saved the link.
https://www.corvetteforum.com/forums...post1582079091
Will
The early 68-72 cars have very little room under the hood with a BBC.... even the factory LT1/BB hoods are really short. You can fit a BBC Performer intake.... There is a member on here that has one and I saw pics when I helped him find a different air cleaner assembly.... but you'll need a really deeply dropped base air cleaner assembly. I don't think that GMPP intake or the Performer RPM would go under any early hood except the L88.
The 73 and later long style stock hoods have more room. You can fit a BBC Performer RPM under one of them no problem.... I saw this thread a few years ago and saved the link.
https://www.corvetteforum.com/forums...post1582079091
Will
Last edited by rklessdriver; Mar 27, 2017 at 03:21 PM.
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Race Director
Joined: Mar 2003
Posts: 11,608
Likes: 780
From: Eustis ( Area 51 Bat Cave ) Fl
Sorry if i confused that, my point was those open plenum intakes kill low end power where i wanted it in a street cruiser but no, the performer wouldnt fit under my hood, 73 front clip and hood on my 69, i believe it would might have fit with a drop base cleaner but i knew i was going l88 hood, just seems factory should have made a nice intake...
Last edited by The13Bats; Mar 27, 2017 at 08:50 PM.
Thread Starter
Racer
Joined: Nov 2014
Posts: 359
Likes: 62
From: Michigan
OK guys,next question. What about going to the 390hp 427 intake over the stock ls5 unit-any advantage there? I am planning on larger valve ported heads and I believe an xe268h cam upgrade. Not concerned about the weight, just a better intake over mine- and still want to use my rochester.Thanks Rich
Last edited by spitfun; Mar 28, 2017 at 08:05 PM.