LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

What intake fits stock Pontiac hood?

Thread Tools
 
Search this Thread
 
Old Mar 16, 2025 | 02:16 PM
  #1  
bk2life's Avatar
Thread Starter
Senior Member
Veteran: Army
5 Year Member
Loved
Community Favorite
 
Joined: Jul 2016
Posts: 811
Likes: 224
From: az
Car: 91 WS6 GTA
Engine: 5.3
Transmission: 4l60e
What intake fits stock Pontiac hood?

1991 GTA, need to know what intake fits with zero modification?

BTR Equalizer ?
BTR Trinity ?
Holley Low Ram ?

...is there any others?
Finally, which intake would you chose, both NA and forced induction.





Reply
Old Mar 17, 2025 | 10:06 AM
  #2  
ShiftyCapone's Avatar
Supporter/Moderator
25 Year Member
iTrader: (7)
 
Joined: Feb 2001
Posts: 13,777
Likes: 567
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: What intake fits stock Pontiac hood?

What head port type? You shouldn't have any issues with the OEM/fast polymer style. K-member and motor mounts do however play a big factor. Units like the BMR raise the engine up a bit making things more difficult.
Reply
Old Mar 17, 2025 | 03:13 PM
  #3  
bk2life's Avatar
Thread Starter
Senior Member
Veteran: Army
5 Year Member
Loved
Community Favorite
 
Joined: Jul 2016
Posts: 811
Likes: 224
From: az
Car: 91 WS6 GTA
Engine: 5.3
Transmission: 4l60e
Re: What intake fits stock Pontiac hood?

Originally Posted by ShiftyCapone
What head port type? .
head port should not make the intake higher.

Originally Posted by ShiftyCapone
You shouldn't have any issues with the OEM/fast polymer style.
not looking for the everyone has this style intake for mine.


​​​​​​​
Reply
Old Mar 17, 2025 | 03:33 PM
  #4  
ShiftyCapone's Avatar
Supporter/Moderator
25 Year Member
iTrader: (7)
 
Joined: Feb 2001
Posts: 13,777
Likes: 567
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: What intake fits stock Pontiac hood?

Originally Posted by bk2life
head port should not make the intake higher.
Correct, unless you have a set of aftermarket heads with a thicker deck. Also, some intake manifolds support more power before they become a restriction, (LS1 vs LS3). What is your motor combo going to be?

Originally Posted by bk2life
not looking for the everyone has this style intake for mine.

​​​​​​​
Not sure what you mean. Match the intake to the power level and driving style (drag only vs street).
Reply
Old Mar 17, 2025 | 04:50 PM
  #5  
Ozz1967's Avatar
Supreme Member
20 Year Member
iTrader: (4)
 
Joined: Dec 2005
Posts: 4,796
Likes: 16
From: St. Cloud, MN
Car: 1984 Trans Am
Engine: LS1383 in work
Transmission: Magnum F - to be installed
Axle/Gears: Zexel Torsen 3.73, 28-spline mosers
Re: What intake fits stock Pontiac hood?

Unless you're running 500+ HP, an LS6 intake will be all you will ever need.
Reply
Old Mar 17, 2025 | 05:00 PM
  #6  
QwkTrip's Avatar
COTM Editor
25 Year Member
iTrader: (22)
 
Joined: Mar 2001
Posts: 10,439
Likes: 2,093
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: What intake fits stock Pontiac hood?

Which style head? That will change answers.

LS1 cathedral port
LS3 rectangle port
LS7 rectangle port

In general, car intakes fit and taller truck intakes do not fit.

Last edited by QwkTrip; Mar 17, 2025 at 07:13 PM.
Reply
Old Mar 18, 2025 | 06:51 PM
  #7  
bk2life's Avatar
Thread Starter
Senior Member
Veteran: Army
5 Year Member
Loved
Community Favorite
 
Joined: Jul 2016
Posts: 811
Likes: 224
From: az
Car: 91 WS6 GTA
Engine: 5.3
Transmission: 4l60e
Re: What intake fits stock Pontiac hood?

Originally Posted by ShiftyCapone
Not sure what you mean. .
Originally Posted by Ozz1967
Unless you're running 500+ HP, an LS6 intake will be all you will ever need.
Originally Posted by QwkTrip
In general, car intakes fit and taller truck intakes do not fit.
Thanks for the comments.
So from what i have researched, there isn't a thread/post/sticky on this forum of what intake manifolds fit without modification to hood or cowl.

Head type, port type, hp range, that is all irrelevant for the most part. Will a holley mid rise intake fit?
Will an MSD atomic intake fit?
Will a $4500 'low pro' full billet intake fit?
Or how about a Nelson Alien intake?

-see where im going with this?
yes everyone knows an LS1/6 intake will fit everything, even a 1985 yugo. But that isnt really the question at hand.

The closest thing i have found is some really outdated 'ls swap' pictures in that section of this forum.

​​​​​​​
Reply
Old Mar 18, 2025 | 06:55 PM
  #8  
ShiftyCapone's Avatar
Supporter/Moderator
25 Year Member
iTrader: (7)
 
Joined: Feb 2001
Posts: 13,777
Likes: 567
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: What intake fits stock Pontiac hood?

Head type and engine cradle/mounts very much matter. An OEM head is different than a stock one by enough to cause issues. Same with k members and mounts. Knowing more about your combo will yield better advice. Without this basic info it's just a guess.
Reply
Old Mar 18, 2025 | 09:57 PM
  #9  
QwkTrip's Avatar
COTM Editor
25 Year Member
iTrader: (22)
 
Joined: Mar 2001
Posts: 10,439
Likes: 2,093
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: What intake fits stock Pontiac hood?

Originally Posted by bk2life
see where im going with this?
No, we can't read your mind. You're feeding us information at a slow drip.
And then you're resisting us when we ask questions.

Be as specific as possible when you ask people for help. Generic questions without bounds get useless answers.

Last edited by QwkTrip; Mar 18, 2025 at 10:10 PM.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
go_topless
Alternative Port EFI Intakes
7
Dec 1, 2024 01:35 PM
85Z28NOS
TPI
1
Oct 5, 2024 03:36 PM
79TPI
Engine/Drivetrain/Suspension Parts for Sale
0
Jul 24, 2022 05:24 PM
Tuned Performance
Engine/Drivetrain/Suspension Parts for Sale
7
Aug 18, 2020 06:19 PM




All times are GMT -5. The time now is 04:02 AM.