rhodes37

Currently have 1 7/8 pacesetters is there any gains hp wise if i was to swap to tsp 1 7/8?

Blackpanther99

iTrader: (8)

IMO TSPs are better quality headers than Pacesetters. Most people buy TSP headers instead of Pacesetters for the same reason since the price of them are close. Since you have 1 7/8 Pacesetters I would stay with them unless you wanna switch to TSPs for better quality. As far as horsepower goes I dont think it would be worth spending the money when you will see minimal gains. What are your mods?

HCI2000SS

iTrader: (2)

I seriously doubt there would be a measurable gain

redbird555

iTrader: (14)

pacesetter doesnt make 1-7/8 headers only 1-3/4 so yes you would see a gain with the larger tsp's

mikh338

iTrader: (16)

tsp 1 7/8 measured 1 3/4 on the inside of primaries which was the same as my 1 3/4 pacestters measured. dont waste your money

mikh338

iTrader: (16)

the tsp sure look a lot nicer tho

MikeWS6

Might be a small gain on a h/c/i combo.

justin hover

I'd wait until you can't stand seeing the rust anymore...then swap.

dr_whigham

iTrader: (49)

Pacesetter does not, and never will, make a 1 7/8" header.

Also, ALL headers are measured by OD, not ID.

BAD2theBONE

Be a waste of money unless your pacesetters are well rusted...

redbird555

iTrader: (14)

finally someone who actually knows this! lol and yes I agree op i would wai until the pacesetters are rusty and then swap to 1-7/8. I noticed a good sotp feel up top with the larger primaries

mikh338

iTrader: (16)

Ok I will be providing a picture of the inside primaries of pacesetter 1 3/4 headers that measure 1 3/4 on the inside of primaries just like the tsp 1 7/8 do

redbird555

iTrader: (14)

please do... but remember its not very accurate to measure the width of the primary at the flange because of welding flash and the hole size cut into the flange you're measuring that hole as opposed to the pipe.

I dont think whignam and I are saying that the tsp's you have dont measure that on the inside were merely saying that headers are measured to the O.D which could mean you have the wrong set of tsp's.

Midnight02

iTrader: (8)

If the Pacesetters are still in good shape it would be tough to rationalize the expense of replacing them for a performance gain. There's certainly a cosmetic benefit to the TSPs.

I had a set of aluminum Hookers on there and finally replaced them once they started to rust and look crappy. I'm sure there was some nominal performance benefit to stepping up to 1-7/8", however it didn't feel like enough to make it worthwhile if that was my only motivation for doing it.

mikh338

iTrader: (16)

i called tsp about this and they said thats what it measures on the inside primaries as the material is 1/16" thick which gives you the 1 7/8 o.d. and hopefuly he gets them to me this week like he said. he actually bought thr 1 7/8 tsp from me and gave them back because he was pissed

2001WS6-DJP

i would thing you would have a gain if you went to 1 7/8 TSP bigger the better.(mine measured 1 7/8 inside diameter i don't know what that guy is talking about)

redbird555

iTrader: (14)

That's pretty much what I said isn't it? Lol all headers are measured out to the OD.

mikh338

iTrader: (16)

no its not. that would mean my pacesetter is a 1 7/8 as well which it is not. its labeled as a 1 3\4 header, it measures 1 3/4 inside diameter!! im not going to argue anymore im hounding my buddy for those pics but hes taking forever. just trying to establish my point.

keith102371

iTrader: (20)

measured my pacesetters today and they are 1 7/8 OD

redbird555

iTrader: (14)

Don't get all huffy man I misunderstood your post. If you have pics post them up. I have measure my buddies pacesetters next to my ARH. And without a doubt mine were bigger and measure just under 1-7/8. I'm not gonna argue.

I linked you To anther thread in the dyno section where the tsp rep even quoted they measure to the od I suppose it is possible pacesetter uses cheaper thinner tubing which would skew measurements but idk

Here's another explaining everything http://www.camaro5.com/forums/showthread.php?t=285935