Low end power search

**matthijsgrit** · 12-08-2009, 04:39 AM

Hello all,

In my search for components to up the power of my 1999 Z28 I've come across loads of different heads, cams and packages. And I'm still learning...
I'm a guy that uses the Camaro most for long rides, but I like to feel the power every now and then as well ;-D
With many of the packages I see, the effects of head and/or cam is in the higher RPM range.
I'd like to have the power on tap for the quick overtakings on the highway and the sprints at the lights.
What I'm looking for is an upgrade that comes in quickly. That means under 2000 rpm.
What should I be looking for?

I'm also wondering what the gain on a pretty stock LS1 is when 243 heads are used?

Any help would be appreciated!

The car: 1999 Z28 Aut4. 60k miles. The car has SLP intake with K&N filter in an opened up tray, TBbypass, smooth bellow. It's lowered with Strano's 1.2 and Koni's 4/4 and stops with EBC slotted and dimpled rotors and EBC pads. The Z has an SS spoiler and SS wheels.

THANKS!

Matthijs Grit

**SOMbitch** · 12-08-2009, 09:58 AM

243's are good for about 15rwhp........

This question made me think of this old Tech thread...... http://ls1tech.com/forums/generation...am-change.html

**tremiles** · 12-08-2009, 10:00 AM

Don't necessarily get hung up on "under 2k rpm". With an auto on the highway, the computer is going to downshift when you stab the throttle. Quality long tube headers/Y-pipe, cat-back, LS6 intake, 3.73 gears, a good converter and a tune will wake up your car quite a bit, and lay a good foundation for more serious mods down the line. With a good tune, switching to the steeper gear won't have a huge effect on your cruise MPG if you keep your foot out of it either.

**Blue28** · 12-08-2009, 11:40 AM

Talk to Geoff at EPS, he'll get you what you want.

**mark21742** · 12-09-2009, 04:31 AM

1st since your an a4, I'd do around a 3,500 stall and headers.

you want and need the stall converter, you just don't know it yet

if you went with something around a 224 cam you will gain low end power over stock and all the way up to redline.....stock these motors make the most power in the 3,000-5,900rpm range.

I just hate see people waste time and money by going way too small then have to do it all again to go bigger to get what they really want.

**matthijsgrit** · 12-09-2009, 04:57 AM

what exactly is the function of the stall converter?
And what will change if I get a different one?

MG

**mark21742** · 12-09-2009, 05:27 AM

Originally Posted by matthijsgrit

what exactly is the function of the stall converter?
And what will change if I get a different one?

MG

think of it like a big centrifical slipper clutch on a go-kart.
from idle to wide open throttle (mashing the gas pedal) your stock converter will slip and let the engine rev to around 1,700 rpms before in starts to turn the transmission input shaft.
a higher stall converter (say a 3,500) will do the same thing, but let the engine rev to about 3,500 rpms, so when it starts to lock the motor will be higher in the rpms where its making more power.

light throttle will stay about the same