More Horsepower. More Torque!!

[Terry/Carol Kelley]

>From what I can tell (and have done), there is not much more power to be had
from a stock engine. What you can do on the 92 and later engines is get all
of it, all of the time. The newer (post 92?) ECM's have torque
management/abusive maneuver and shift information in the cal. Some of this
can be reduced except where durability is involved.

Turbo engines though seem to have a lot room (more boost), but durability
issues come up again.

Terry Kelley

1986 Olds Ciera GT 3800 Supercharged
-----Original Message-----
From: Andrew K. Mattei <amattei at mindspring.com>
To: gmecm at esl.eng.ohio-state.edu <gmecm at esl.eng.ohio-state.edu>
Date: Tuesday, March 30, 1999 6:12 PM
Subject: Re: More Horsepower. More Torque!!


>Dave Hempstead wrote:
>>    Given a stock GM engine (let's say, a '95  5.7 liter  LT-1, since
>> that's what I have :-), what kind of differences in torque and
>> horsepower can we get by modifying the computer??
>> I don't know if the tuning companies are able/willing to give up on the
>> pollution standards.
>
>Disclaimer: *I'm not an expert*. ;) From what I've seen on the f-body
>lists I've subscribed to, with the Hypertech Power Programmer (they
>tweak the timing tables - requiring 92+ octane gas), LT1 folks gain
>maybe a few rear wheel horsepower (5-10?), and maybe a bit of
>performance in the quarter (<.10 sec  <2 mph).
>
>Honestly, I am unsure of the performance payback from the efforts on a
>stock system. However, change the camshaft and reprogramming gains can
>be substantial (25+ horses over what the camshaft gives you). I have
>friends running somewhat conservative cams (such as the LPE 211/219
>cam), and they're getting ~350 hp at the rear wheels with mildly worked
>heads, headers, and non-factory intake boxes.
>
>What kind of tranny are you running? Reprogramming the pump pressure on
>the Automatic 4L60E can give you a real kick in the pants =8^D Of
>course, you can also accomplish that with a 10 ohm, 20 watt resistor...
>(a la the B&M ShiftPlus)
>
>You might peruse www.f-body.org, and maybe subscribe to the fourth-gen
>mailing list... But beware the babble on that list (my exhaust is better
>than yours kind of stuff)... I'm no longer on that one. ;)
>
>-Andrew
>