New LS1 Owners - Newbie Tech - mid tubes vs long tubes

I have a 99 firebird formula and it already came with Mac mib tube headers, I was thinking of getting a set of pacesetter long tube headers......do yall think there would be much of a hp gain?

10-15rwhp

That's what I was thinking.....and I've heard they aren't very easy to install.

its worth upgrading imo.

you'll gain torque with the long tubes. They should make about the same peak HP. If you keep out of the gas the long tubes should increase your fuel milage.
The Macs are ok if they are in good shape. I ran them years ago. I did find that the long tube Pace setters were easier to install. They did give better clearence in the engine compartment over the Macs.

you'll gain torque with the long tubes. They should make about the same peak HP.

Agreed, epecially if it's just a bolt-on car.

It is a bolt on car for now, but I have an ls6 intake, 243 heads, 42lb injectors, and a 2500 stall in the garage ready to be put on. I'm just trying to figure out what cam I want to run. I was thinking the tr224 would be perfect.

sell that 2500 stall for something higher.

sell that 2500 stall for something higher.

:nod:

2500 is about 1000rpm too low for even a stock LS1. If you plan on a cam as well, 3500 would be the absolute minimum IMO.

:nod:

2500 is about 1000rpm too low for even a stock LS1. If you plan on a cam as well, 3500 would be the absolute minimum IMO.

+1, At least a 3600; it will wake the car up. You wont notice anything under 3000

It is a bolt on car for now, but I have an ls6 intake, 243 heads, 42lb injectors, and a 2500 stall in the garage ready to be put on. I'm just trying to figure out what cam I want to run. I was thinking the tr224 would be perfect.


It should be a nice build. Like posted above a bigger stall for the track but with a 224 cam you could stay with a near stock one and make a nice DD. It will put down some good dyno #'s esp. with stock gears. I would say in the 400hp range.

A bigger stall, gears ?? and good tires would make it a strip hero. Then the parts breakage begins. LOL

It should be a nice build. Like posted above a bigger stall for the track but with a 224 cam you could stay with a near stock one and make a nice DD.

Even for a daily driver I'd want a lot more stall for that cam, or any cam. Stock shift extension isn't even close to ideal for a stock cam, let alone something bigger. Idle tuning will also be more difficult with a stock/stockish stall and a 224 cam.

Agreed ^^^ with the guys above, i noticed a big difference when i installed my Vig 3600 on a bolt on car

Planning on doing H/C next month