Thread: Dropped pulley! I need help!!! Want 300hp!!!

I dropped to a 3.2 pulley. Tuned it.
From 259HP & 254TQ
It got 266HP & 267TQ
from 5 PSI went up to 7 PSI
No Knock, just .01 to .04

It produced 12 to 16 Horsepower till 5000rpms
From 5000rpms to the redline, it only gained 5 to 6 HP

I believe its time for springs and retainers.
I will upload some pics of springs I have with retainers for help.

The guy who tuned it told me it was not producing more horsepower up top
Because of the supercharger getting too hot.
It may be true. But i dont know

My mod list:
-Stage 1 intense blower cam
-Fenderwell Intake
-eBay headers
-full 3" mandrel exhaust
-autolites 104
-180° thermostat
-3.2 MPS
-Shift kit
everything else is stock

You should be on a 2.7 pulley that's where the power is.

ok here's the deal.
i have yellow springs and grey with some orangy markings
been told that yellows were LS6 and greys LS7, LS3 & LS9
heres the pic

the middle one is grey the right one yellow and left stock L67 and the retainers ive got.
they dont float

Something I've "been told", sounds like something I would throw power at for sure.

what do you mean?

Do you know what they are?
Did you install them?

Have you even read the safely modding your 3800 thread?

yellow are ls6
greys were given to me
the guy told me they were
LS3, 7 & 9!
i have not mounted anything yet because i don't know which is better

http://www.grandprixforums.net/safel...car-17482.html

the dyno chart and scan may help some.

weren't LS6 springs only like 90#? also, taking a shot in the dark here, but i believe those springs aren't interchangeable. aka the LS6, 7, 3, and 9 didn't use the same ones.

With that cam, you need springs or float is a given. Also the potential to break a spring is much much much higher with a stocker. If you don't know what the springs are, please..don't use them.

Wheeeeeeeeeeeeeee, valve float.

Also, LS6's are blue now, no longer yellow.

105's would be your best choice since they are easiest on the timing chain as well...which shouldn't be an issue because you should have replaced that with a new dampner when you installed the cam.

If it was done correctly.