That's what I've heard. They even say on their site that they're 2wd only. No worries though, because that's what I've got.

 

We just restocked from being sold out:
CalSpeed 1-3/4" Longtube headers /w stainless 3" y-pipe

Ours include MLS gaskets and wrap around stainless band clamps for $400 plus shipping.

Same fit as pacesetter, lpp etc. We've never installed a TSP set couldn't compare with theirs.

 

What yr truck? Our 99-06 does have some fitment issues on 4WD, but the 07+ fits 4WD without problem.

- Beau @ TSP

 

what kind of fitment issues?

 

Mine's an 02, but it's 2wd, so it sounds like there shouldn't be any problems. Thanks!

 

Texas Speed . . . no hammering to fit or clearance issues. . . they drop right in.

 

I stand corrected. I was under the impression they would need modification to clear 4WD components. This is good to hear! Thanks Tootall.

Oh yeah, then you're good to go. Let me know if you need any help or wanna place an order. I have them in stock ready to ship!

- Beau @ TSP

 

hey sorry about that . . .for 2wd, no issues . . . I've used the TSP headers on 2wd setups several times

I don't know about 4wd setups, I have SS Works on my truck.

 

Oops! In that case....

I can't remember for the life of me what issues there were on NBS 4WD applications, but modifications had to be made for them to fit. I will do some research and see if I can jog my memory.

- Beau @ TSP

 

'01 2500 4x4 Suburban

The main issue for me was the complete removal of the tranny-mounted hanger/heat shield assembly on the passenger side. This was a major clash.

Several other small things.

See post 12: https://www.performancetrucks.net/fo...2500-a-520418/