TSP 1 3/4" Header Fitment - LS1TECH - Camaro and Firebird Forum Discussion

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TSP 1 3/4" Header Fitment

Old 11-22-2018, 01:53 PM
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Default TSP 1 3/4" Header Fitment

Before I waste time and effort, has any one got some high quality pictures and measurements of the floorboard to collect clearance, and clearance of the pipe (catted or not) aft of the collector to the floor board.

I was planning on installing TSP headers, and welding on two bolts flanges to the headers and cctalytics, rather than using clamps, but I won't bother if there is no room.
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Old 11-22-2018, 02:16 PM
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Originally Posted by lees02WS6 View Post
Before I waste time and effort, has any one got some high quality pictures and measurements of the floorboard to collect clearance, and clearance of the pipe (catted or not) aft of the collector to the floor board.

I was planning on installing TSP headers, and welding on two bolts flanges to the headers and cctalytics, rather than using clamps, but I won't bother if there is no room.
Good luck with that. Two sets of their 1-3/4 on my car were smack against the floorboard.

ETA they wouldnt fit with old stock mounts, polys or new stock mounts.

Last edited by 99Silver6.0; 11-27-2018 at 07:10 AM.
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Old 11-22-2018, 03:07 PM
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Originally Posted by 99Silver6.0 View Post


Good luck with that. Two sets of their 1-3/4 on my car were smack against the floorboard.
Not good. Guess Iím keeping the manifolds. Iíve been looking at various long tube installs and they all look like tight fitments. Either they impinge on kmembers the floorboard or both,
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Old 11-22-2018, 03:30 PM
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Originally Posted by lees02WS6 View Post


Not good. Guess Iím keeping the manifolds. Iíve been looking at various long tube installs and they all look like tight fitments. Either they impinge on kmembers the floorboard or both,
I took a chance (and ended up spending a bit more money) and went with American Racing Headers. Didnít have any of the fitment issues I did with the TSPís. Headers and ORY fit extremely well!
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Old 11-22-2018, 04:56 PM
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Install new motor mounts when you do your headers; that's about 9 tenths of peoples issues with some headers. I ran their 1 7/8" on my 01 SS.

Last edited by dr_whigham; 11-25-2018 at 02:00 PM.
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Old 11-22-2018, 06:13 PM
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Biggest issue is, if these companies make good floor clearance, like maybe the OG SLP headers, ground clearance is **** and your headers get beat up. There is only so much room for a 3 inch pipe at that spot. Its a double edge sword sir, and you need to pick your poisen.
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Old 11-23-2018, 04:02 PM
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Weld Marmen Flanges on the header and Y pipe.
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Old 11-27-2018, 02:47 AM
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I've had both tsp 1 and 3/4 and their 1 and 7/8 and never had a problem on the few sets I've installed. Never had to change the mounts either. I also had their y pipe on a couple vehicles and never had a single issue with anything. Just my 2 cents
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Old 11-27-2018, 09:48 AM
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I have their 1 7/8" on my car. The passenger side slide in like it was on ice. The drivers side? Every problem you might hear about. Alterations to the primaries, the firewall, k-member, the flange itself. What it finally got hung up on was a small cast piece on my 4L60's bell housing that I ground down. Next time I do headers on one of these it'll be 1 3/4" or i'm dropping the motor out. TSP makes great products, I just have bad luck.
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Old 11-27-2018, 09:55 AM
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I have Hooker LT on mine with TSP Y pipe, fit like a glove, I did have to adjust the Y pipe some but there a plenty of ground clearance and the y pipe does not hit the floor pan. Also on my first Bird, it had BBK headers with a two bolt flange, lifted the car off the ground and they went on super easy as well, I just didn't like the flange and the SLP loudmouth.https://www.summitracing.com/parts/b...model/trans-am

Last edited by qweedqwag; 11-27-2018 at 10:00 AM.
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Old 11-27-2018, 05:44 PM
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Originally Posted by qweedqwag View Post
I have Hooker LT on mine with TSP Y pipe, fit like a glove, I did have to adjust the Y pipe some but there a plenty of ground clearance and the y pipe does not hit the floor pan. Also on my first Bird, it had BBK headers with a two bolt flange, lifted the car off the ground and they went on super easy as well, I just didn't like the flange and the SLP loudmouth.https://www.summitracing.com/parts/b...model/trans-am
I had Hooker 1 3/4 on my TA with the TSP catted Y. The drivers side always hung low. I also had a header leak at the head.

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Old 11-27-2018, 08:35 PM
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Oh this is not good to hear, was planning on doing the exact same thing. I have Grot headers now with ball ends and wanted to upgrade to TSP's and have ball ends welded on. I figured there would be enough clearance from the floorboard but now I am questioning it.
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Old 11-27-2018, 08:43 PM
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Not the best angle but looking at these pictures I feel like ball ends with flanges should fit.

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Old 11-27-2018, 10:53 PM
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I have TSP 1 7/8 headers and the only issue I ran into is the driver side rubbing the K-member. I did the motor mounts at the same time, so I unbolted the motor mount pedestal and removed the oil filter and the driver side slipped right in.
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Old 11-27-2018, 10:58 PM
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TSP 1-7/8 here and the only thing I had to do was cut on the "K" a little on the drivers side. Had a issue with the Y hitting but that went away with poly mounts.
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Old 11-28-2018, 09:40 AM
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What kind of clearance do you guys have from the floorboard though?
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Old 11-28-2018, 10:10 AM
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I had plenty, even before changing mounts.
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Old 11-28-2018, 08:42 PM
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I'm just assuming here because I've only had one set of headers on my car but I can't see the collectors being so close to the floor that you can't get a flange on it. If they're that close then I would think that any car with stock mounts would hit the floor when the engine torques. With my Spohn solid mounts it lifted the driver side quite a bit and it still didn't touch with flanged headers/y-pipe.
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Old 11-28-2018, 09:22 PM
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My biggest concerns came after seeing the video below, and seeing some images on the forum. The headers in the video are not TSP, but after reading 99Silver6.0's comment I was more concerned. Frankly if I had the clearance issues in the video I'd have sent those headers back. I just started working on it, we'll see how it goes. If there are clearance issues with the collectors, and they are solvable with cut and weld that's what I'll do.

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Old 11-28-2018, 10:17 PM
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Originally Posted by lees02WS6 View Post
My biggest concerns came after seeing the video below, and seeing some images on the forum. The headers in the video are not TSP, but after reading 99Silver6.0's comment I was more concerned. Frankly if I had the clearance issues in the video I'd have sent those headers back. I just started working on it, we'll see how it goes. If there are clearance issues with the collectors, and they are solvable with cut and weld that's what I'll do.

https://youtu.be/GeBefNLYiBM
This thread has a few pictures of what I ran into. Post #22. Again, I tried with my 60k mile mounts, new stock mounts and Prothanes. It was worse with the Prothanes.
https://ls1tech.com/forums/generatio...questions.html
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