This is taken from the April, 2008 issue of GM High Tech performance. ET reduction and MPH gain is for 1/4 mile track. ??? mean I don' believe the numbers.


Adjustable fuel Pressure Regulator:
$69, +15 RWHP ???, -0.05 ET, +0.05 MPH, medium (only if the FI is not tund properly)

March Underdrive Pulleys:
$52, +5 RWHP, -0.1 ET, +1 MPH, medium

Thunder Racing Air Foil:
$47, +5 RWHP ???, -0.05 ET, 0.05 MPH, easy

SLP Cold-air Induction:
$249, +10 RWHP, -0.1 ET, +1 MPH, medium

Hooker Long Tube Headers:
$185, +20 RWHP, -0.2 ET, +2 MPH, medium

Hooker Catback:
$300, +10 RWHP, -0.1 ET, +1 MPH, medium

MSD Ignition: (6AL)
$184, +0 RWHP, -0.00 ET, +0.0 MPH, easy

Crane 1.6 Roller Rockers:
$369, +5 RWHP ???, -0.05 ET, +0.05 MPH, medium (seems like a lot of money for just 5 HP)

Drag Radials:
$400, +0.0 RWHP, -0.3 ET, +1 MPH, hard (easy for tire guy)

Stealth Ram Intake Manifold:
$530, +20 RWHP, -02 ET, +2 MPH, medium

NOS Wet Kit
$549, 100 RWHP, -0.3 ET ???, +1 MPH ????, hard

Precision Industries Torque Converter;
$699, +0.0 RWHP, -0.3 ET, +1 MPH, hard

 

I understand that this all came from a magazine, but 100 hp only netting 1/3 of a second? thats odd [&:]

 

That is why I put the question marks, most likely it is a typo.

 

yeah, i figured. just discussing


my kit only gained me a third, but it has issues with cutting out. im gonig to rewire it here at some point

 

I have a 85 IROC-Z it had a 305 TPI in it I put a 100 shot of NOS on it. We just have a 1/8 of a mile here with no NOS it was running from 9.50-9.70 with NOS the best time I got was a 8.50. I just put a new motor in it. Its a 350/330hp I will post some pic soon

 

Great car, i need posts

 

I am guessing the converter by its self would make a huge difference. I also dont see a Y-pipe in that list and would question real HP gains. I think if you did every power mod on this list you may pick up 40 at the wheels at the very most (of course not including the bottle). Now add a good cam and a decent set of budget heads like 113s or something like that and i bet power jumps up to just under 300 at the wheels with a good converter. Also betting the car would be some where in the high 13s as long as it could grab traction and had a good set of gears and converter. Back that up with a 100 shot and should be hitting high 12s. Just my 2 cents

And yes i know this is a old thread.

 

Another bolt on performance mod is a lt1 cam no Mods required for this

 

Horsepower by addition...Now lets see if I added up all my aftermarket claimed Horsepower by the Mfg I figure I am over 400 for my car. Now I have to find a few more parts to add on to my total. I am beginning to like this Horsepower by addition.

 

I have custom 350 chips available if anyone needs one. Let me know