BB headers with LS flanges?
Thread Starter
Supreme Member
iTrader: (4)
Joined: Mar 2005
Posts: 1,090
Likes: 0
From: Home of most 3rd gens Van Nuys, CA
Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
BB headers with LS flanges?
I was wondering if anyone has tried big block long tube headers but put LS1 flanges for a LS1 swapped 3rd gen. i believe the ports are t about the same point on the head.
i know when i was building my 5.3L swapped 87 RX7 there was a bunch o fpeople using 5.0 mustang headers and putting LS1 flanges and they fit pretty good.
i know when i was building my 5.3L swapped 87 RX7 there was a bunch o fpeople using 5.0 mustang headers and putting LS1 flanges and they fit pretty good.
Joined: Jun 2004
Posts: 901
Likes: 23
From: Las Vegas
Car: '88 Trans Am
Engine: 5.7L TPI
Transmission: Slushbox
Axle/Gears: 3.27
Re: BB headers with LS flanges?
The way the BB headers are made I see the LsX oil pan being a problem especially by the
filter area
filter area
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: BB headers with LS flanges?
I believe my buddy did this to an 80's el camino. 6.0 truck motor swapped in, and he reused his BBC headers for an A-body chevelle. Just cut and modified the tubes to LS flange. It fits nicely. Not a 2" primary tube tho.
I think that would work on 3rd gens but then again not sure of the clearance issues you may have.
You also could modify stock sbc longtubes but that is abit more work since the spacing isnt as close.
I think that would work on 3rd gens but then again not sure of the clearance issues you may have.
You also could modify stock sbc longtubes but that is abit more work since the spacing isnt as close.
Supreme Member
iTrader: (1)
Joined: Mar 2007
Posts: 1,237
Likes: 7
From: Apopka, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: cammed LS1
Transmission: Monster SS 4L65E
Axle/Gears: 9 bolt posi w/ 3.70 gears
Re: BB headers with LS flanges?
Seems like a lot of work to me when there are already long tube headers made specifically for the third gens and LSx engines. Just my two cents
TGO Supporter
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: BB headers with LS flanges?
Yep, and with what those BBC swap headers cost, you might as well just buy headers meant for an LSx swap. They cost about the same. BBC swap headers are not cheap.
Joined: Jun 2004
Posts: 901
Likes: 23
From: Las Vegas
Car: '88 Trans Am
Engine: 5.7L TPI
Transmission: Slushbox
Axle/Gears: 3.27
Re: BB headers with LS flanges?
Who knows op may have a line on a set of used BB headers for a 3rd gen.
I remember the money shelled out for those BB hookers. 560.00 back in '91uncoated of course!
I remember the money shelled out for those BB hookers. 560.00 back in '91uncoated of course!
Thread Starter
Supreme Member
iTrader: (4)
Joined: Mar 2005
Posts: 1,090
Likes: 0
From: Home of most 3rd gens Van Nuys, CA
Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: BB headers with LS flanges?
no i was just curious. i did not know how much the BB headers cost.
Trending Topics
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: BB headers with LS flanges?
Are you any good at cutting pipes and welding them up to make your own set of headers? You could make a simple set of shortys that wouldnt cost much at all and would still perform great
Thread
Thread Starter
Forum
Replies
Last Post
sreZ28
Engine/Drivetrain/Suspension Parts for Sale
5
Oct 22, 2015 08:21 AM
redformula88
Engine/Drivetrain/Suspension Parts for Sale
2
Oct 14, 2015 06:08 PM
Chad Speier
Engine/Drivetrain/Suspension Parts for Sale
3
Sep 24, 2015 12:32 PM
