Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

bbc swap with lemons headers tire and wheel fitmentnt

Old Aug 19, 2025 | 10:26 PM
  #1  
blackblack89's Avatar
Thread Starter
Junior Member
10 Year Member
 
Joined: Jan 2012
Posts: 5
Likes: 0
bbc swap with lemons headers tire and wheel fitmentnt

can you use stock wheels and tires with lemons headers bbc swao or alternates ... pics please
Reply
Old Aug 19, 2025 | 10:33 PM
  #2  
bk2life's Avatar
Senior Member
Veteran: Army
5 Year Member
Loved
Community Favorite
 
Joined: Jul 2016
Posts: 809
Likes: 223
From: az
Car: 91 WS6 GTA
Engine: 5.3
Transmission: 4l60e
Re: bbc swap with lemons headers tire and wheel fitmentnt

right from their website listing:

This header is designed for any tube size up to 2 ½” with any collector size up to 5”.
The most restrictive part of this chassis is the floor board area around the transmission which does not leave enough room for our collector mufflers (We have been told by customers that flipping the floorboard will give you more room.). This design has 2 tubes on the passenger side and 1 tube on the driver side that go around the frame, this enabled us to keep room for the starter and kick out oil pans with these large tube sizes. This header was designed using a Hitachi style starter a full size GM starter will not fit.
Measuring from a stock oil pan it has 4” of room on each side for large sump kick outs and the bottom of the header is even with the bottom of a typical race pan. The lowest part of the header is the collectors because of the floor board. With no kick outs on the oil pan the starter and oil filter are easily accessible. Spark plug access is very good you can get a socket on all plugs. If you have wide front tires and wheels with an offset to the back side then the tires will rub at a full turn, the header is designed for skinny drag type tires. Any exhaust system will have to run down the drive shaft tunnel. If your raised port heads are over .600 higher than stock you will have to replace the steering column rag joint with a smaller “U” joint to make room for #7 tube. The header is designed for side motor mounts or motor plates and will fit many aftermarket “K” members, but the engine must stay in the stock location.
This header will fit a power brake booster, but will not fit the stock clutch slave cylinder or factory air conditioning or column shifter linkage. (We also know that it will not fit a TH700R4, 4L85E, or a 4L85E)
Reply
Old Aug 20, 2025 | 11:09 AM
  #3  
blackblack89's Avatar
Thread Starter
Junior Member
10 Year Member
 
Joined: Jan 2012
Posts: 5
Likes: 0
Re: bbc swap with lemons headers tire and wheel fitmentnt

thank you i read that but not real specific so i was hoping for more exact info
Reply
Old Aug 20, 2025 | 11:46 AM
  #4  
bk2life's Avatar
Senior Member
Veteran: Army
5 Year Member
Loved
Community Favorite
 
Joined: Jul 2016
Posts: 809
Likes: 223
From: az
Car: 91 WS6 GTA
Engine: 5.3
Transmission: 4l60e
Re: bbc swap with lemons headers tire and wheel fitmentnt

Originally Posted by blackblack89
thank you i read that but not real specific so i was hoping for more exact info
Originally Posted by bk2life
the header is designed for skinny drag type tires.
Not sure how much specific you can get than that.

-pick up the phone give them a call get it right from the horses mouth
Reply
Old Aug 20, 2025 | 11:54 AM
  #5  
blackblack89's Avatar
Thread Starter
Junior Member
10 Year Member
 
Joined: Jan 2012
Posts: 5
Likes: 0
Re: bbc swap with lemons headers tire and wheel fitmentnt

the horses mouth would be someone that has done it on their car
Reply
Old Aug 21, 2025 | 09:25 AM
  #6  
AidenWolf's Avatar
Junior Member
 
Joined: Dec 2023
Posts: 1
Likes: 0
Re: bbc swap with lemons headers tire and wheel fitmentnt

Originally Posted by bk2life
right from their website listing:

This header is designed for any tube size up to 2 ½” with any collector size up to 5”.
The most restrictive part of this chassis is the floor board area around the transmission which does not leave enough room for our collector mufflers (We have been told by customers that flipping the floorboard will give you more room.). This design has 2 tubes on the passenger side and 1 tube on the driver side that go around the frame, this enabled us to keep room for the starter and kick out oil pans with these large tube sizes. This header was designed using a Hitachi style starter a full size GM starter will not fit.
Measuring from a stock oil pan it has 4” of room on each side for large sump kick outs and the bottom of the header is even with the bottom of a typical race pan. The lowest part of the header is the collectors because of the floor board. With no kick outs on the oil pan the starter and oil filter are easily accessible. Spark plug access is very good you can get a socket on all plugs. If you have wide front tires and wheels with an offset to the back side then the tires will rub at a full turn, the header is designed for skinny drag type tires. Any exhaust system will have to run down the drive shaft tunnel. If your raised port heads are over .600 higher than stock you will have to replace the steering column rag joint with a smaller “U” joint to make room for #7 tube. The header is designed for side motor mounts or motor plates and will fit many aftermarket “K” members, but the engine must stay in the stock location.
This header will fit a power brake booster, but will not fit the stock clutch slave cylinder or factory air conditioning or column shifter linkage. (We also know that it will not fit a TH700R4, 4L85E, or a 4L85E)
Spoiler
 
Thank you so much for taking the time to write it in brief.

Last edited by AidenWolf; Aug 29, 2025 at 07:09 AM.
Reply
Old Aug 21, 2025 | 10:12 AM
  #7  
bk2life's Avatar
Senior Member
Veteran: Army
5 Year Member
Loved
Community Favorite
 
Joined: Jul 2016
Posts: 809
Likes: 223
From: az
Car: 91 WS6 GTA
Engine: 5.3
Transmission: 4l60e
Re: bbc swap with lemons headers tire and wheel fitmentnt

Originally Posted by blackblack89
the horses mouth would be someone that has done it on their car
actually the people who manufacture it is who you should speak with.
They can tell you what wheels/tires/sizes they tried.
For the nearly $2000 price tag, id be on the horn with them asking every question under the sun i could think of.
Thats a big price tag.
For that price, id find a local shop and have headers made to fit my car, my wheel/tires and have no issues.
Reply
Old Aug 21, 2025 | 11:56 AM
  #8  
blackblack89's Avatar
Thread Starter
Junior Member
10 Year Member
 
Joined: Jan 2012
Posts: 5
Likes: 0
Re: bbc swap with lemons headers tire and wheel fitmentnt

ok thank you will do
Reply
Old Aug 21, 2025 | 11:58 AM
  #9  
Tuned Performance's Avatar
Sponsor
20 Year Member
Community Builder
Community Influencer
Community Favorite
iTrader: (95)
 
Joined: Dec 2004
Posts: 16,888
Likes: 1,013
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: bbc swap with lemons headers tire and wheel fitmentnt

I think , Jeff bought a set along time ago. Could ask him if fitting as well as wheel size/offsets.

https://www.thirdgen.org/forums/member.php?u=105841
Reply
Old Aug 21, 2025 | 12:11 PM
  #10  
blackblack89's Avatar
Thread Starter
Junior Member
10 Year Member
 
Joined: Jan 2012
Posts: 5
Likes: 0
Re: bbc swap with lemons headers tire and wheel fitmentnt

thank you
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
turbobuick88
Wheels and Tires
2
Mar 31, 2015 07:40 AM
blaze15301
Wheels and Tires
3
Apr 7, 2013 04:48 PM
paul_huryk
Suspension and Chassis
7
May 8, 2009 01:47 PM
MurCurY
Body
1
Feb 23, 2004 05:32 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 09:23 AM.