Question on intake manifolds
Thread Starter
Instructor
Joined: Jul 2009
Posts: 106
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From: Thompson Falls MT
Question on intake manifolds
Hi everyone,
I am dropping a 383 stroker into my 1981 vette and have had people "caution" me that I need a low-rise intake manifold so my stock hood will close. I just saw in a magazine where a guy had a Edelbrock Performer RPM manifold (high-rise) on his 383 and the hood appeared to be stock. His car was an '82 but it appeared to be the same hood. Will a Performer RPM fit under my stock hood? I have never had anyone tell me yes or no, just cautioned me. Your advice is greatly appreciated.
I am dropping a 383 stroker into my 1981 vette and have had people "caution" me that I need a low-rise intake manifold so my stock hood will close. I just saw in a magazine where a guy had a Edelbrock Performer RPM manifold (high-rise) on his 383 and the hood appeared to be stock. His car was an '82 but it appeared to be the same hood. Will a Performer RPM fit under my stock hood? I have never had anyone tell me yes or no, just cautioned me. Your advice is greatly appreciated.
Race Director
Joined: Sep 2002
Posts: 10,362
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From: San Diego - Deep Within The State of CONFUSION!
I've heard yes & no. When they came out with that manifold, everyone said they don't fit. Nowadays the consensus seems to be they are working fine. Go Figger .....
Race Director
Joined: Jan 2000
Posts: 12,399
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From: San Jose CA
Isn't the issue with the earlier cars, where the non-LT1 small blocks had a very flat hood? (72 and earlier, I want to say...)
Instructor
Joined: Sep 2006
Posts: 154
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From: Upper Darby PA
don't think you going to make it. I have an '81 with a performer 2101, 600 holley, and a drop 2 1/2" aircleaner. have only 7/8" hood clearance. of course, every 'vette is a little different. good luck, Rich
Thread Starter
Instructor
Joined: Jul 2009
Posts: 106
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From: Thompson Falls MT
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Le Mans Master
Joined: Oct 2010
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From: melbourne florida
2023 C3 of the Year Finalist - Modified
a friend has a 74 with late model hood and i put a performer rpm on and it fits fine don't confuse with performer rpm air gap that's a different animal
Burning Brakes
Joined: May 2006
Posts: 865
Likes: 53
question on
I have the newer 2701 manifold with a 1405 carb , dropbase aircleaner with 3" element . The thing I did was make a flat aircleaner cover (1/4" plexiglass) , cut down the threaded rod slightly , and it just fits stock hood . Seems like the tires , some fit , some don't .
Pro
Joined: May 2010
Posts: 737
Likes: 3
From: Pennington NJ
I have an Edelbrock performer (Normal) with a Jegs drop base air cleaner 14 x 3 inch. It clears the hood fine on my '74. It should work if it is a normal performer rpm, but probably not if it is an air gap model.
Will
Burning Brakes
Joined: Dec 2007
Posts: 889
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...fit under my 74' hood and with a 'stock' 71' air cleaner assembly I have at least 1+" of extra clearance. Notice that the 2.5" chunks of PlayDoh are not touched when the hood is clamped closed. That ----- is huge. Unbelievable!
BTW: my engine compartment is much nicer now!
BTW: my engine compartment is much nicer now!
Last edited by mar; Dec 1, 2010 at 08:02 PM.
Burning Brakes
Joined: Nov 2004
Posts: 1,084
Likes: 54
From: Grand Rapids Michigan
Vortec hood clearance
Here's my experience with the hood clearance Vortec question. I hope it helps and maybe someone can chim in and help me also. Thanks
These are pics of my 72. Matching numbers block with what I believe are Vortec heads. Even with the thin bug eye air filter it still rubs the stock hood. I'm getting it ready for paint and am concerned that I will have paint issues in the future. Does anybody know if there is a lower intake for the Vortec?
Thanks again
Mike
These are pics of my 72. Matching numbers block with what I believe are Vortec heads. Even with the thin bug eye air filter it still rubs the stock hood. I'm getting it ready for paint and am concerned that I will have paint issues in the future. Does anybody know if there is a lower intake for the Vortec? Thanks again
Mike
Le Mans Master
Joined: Apr 2001
Posts: 5,941
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From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
Here's my experience with the hood clearance Vortec question. I hope it helps and maybe someone can chim in and help me also. Thanks These are pics of my 72. Matching numbers block with what I believe are Vortec heads. Even with the thin bug eye air filter it still rubs the stock hood. I'm getting it ready for paint and am concerned that I will have paint issues in the future. Does anybody know if there is a lower intake for the Vortec?
Thanks again
Mike
These are pics of my 72. Matching numbers block with what I believe are Vortec heads. Even with the thin bug eye air filter it still rubs the stock hood. I'm getting it ready for paint and am concerned that I will have paint issues in the future. Does anybody know if there is a lower intake for the Vortec? Thanks again
Mike
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
I'll sell you a nice clean brodix HVH1016 intake if your motor has 1204 Felpro or bigger ports on it. $150 shipped to any of the 48 states. Google this intake it works as well as the air-gap and is about 1.25" lower.
Thread Starter
Instructor
Joined: Jul 2009
Posts: 106
Likes: 0
From: Thompson Falls MT
I was hoping you would offer your 2 cents because it seems you have been through your car enough times to assemble it in your sleep. I would get a drop base air cleaner so I am glad to hear you think it will work with that combination. I have been reluctant to order one because I want the benefits of the RPM but also want my hood to close
thanks