Stealth Camaro

Hi guys

I know you have asked and read about 1 3/4" vs 1 7/8", absolutely you have seen people say go with 1 3/4" and some 1 7/8" ! .. Also some claim that the 1 7/8" headers will lower your torque !

I was having Pacesetter 1 3/4" LTs with their Y-Pipe for years, I dyno'd my H/C 346 with them and the result was 407 rwhp / 387 rwtq

Decided to try the TSP 1 7/8" headers with their nice merge O/R Y-Pipe and the result was 435 rwhp / 411 rwtq ..

So that's 28 rwhp & 24 rwtq more ! .. my tuner will send me the dyno graph by tomorrow

strokerrace

iTrader: (8)

Snap son...in for dyno graph....

omarrakeen

iTrader: (2)

this is some nice gain but i dont think its all for the primaries. merge will help too but 20+ for the primaries seem alot to me. but thats awesome

ls6jay

Is it same dyno?

Stealth Camaro

Yes same dyno, a week difference between each run ..

I know the gain is high from headers and Y-Pipe and you may not see it as high as this with bolt-ons car , but H/C cars with bigger intake and compression around 11:4 will shine the result more and more

Stippy17

iTrader: (5)

Id also like to see the dyno graphs between the 2. I'm running Pacesetters with a Texas Speed YPipe right now.

JRENIGAR

iTrader: (37)

I would love to have seen a dyno between the two headers with the tsp pipe already on as I already have the y pipe but still have the 1 3/4 headers still. Good info either way though.

LS1WS6dreamer

iTrader: (1)

That is a big gain considering you already had LT's on the car. Please post that dyno graph.

L80Killa87

iTrader: (8)

Pretty good gains. Kind of regret my 1 3/4 pacesetters now.

hitmanws6

iTrader: (20)

And everyone wonders why i push 1 7/8s, nice gains

ULTIMATEORANGESS

iTrader: (4)

how much of a gain under your peak?

masterz28

iTrader: (8)

Very nice. I have 1 3/4" now but am waiting for some heads, intake, then headers. All on a new block.

MattSapp95_T/A

iTrader: (35)

wow nice! Glad I went with Hooker 1 7/8

Zmg00camaross

iTrader: (11)

In for the graph. 1 7/8 headers are a no brainer. The stock LS1 head flow great for a factory head compared to a sbc or anything form the dino age. The flow enough for the larger primarys to be beneifical.

MYSTIC-1SC

iTrader: (14)

Very nice gains!

sjsingle1

iTrader: (1)

only 1 word for peeps running 1 3/4..............SUCKER

MR WESST 02

+1 on 1 7/8 headers. i went with kooks and i love them after getting a tune i made 351rwhp and 363tq, mods are in sig.

allout06

iTrader: (11)

damn, u made more torque than me, and i have a fukin cam......i gotta get new injectors/maf

TORCHD 02 TA

iTrader: (39)

I make good numbers for my 1 3/4" LTs on stock heads and ls6 intake

udienow

iTrader: (18)

Was your old set-up catted or also ORY? I am thinking most of your gain came from the y-pipe change, but not to say the headers didnt pick you up power too. If I ran a heads/cam car id also push for the 1 7/8 but till then i think my 1 3/4 are solid.