----------
> From: Alan Casey <acasey@mail.io.com>
> To: dakota@ait.fredonia.edu
> Subject: Re: Gibson Cat-back Exhaust.....
> Date: Tuesday, June 10, 1997 10:45 AM
>
> > From: "Sam Parthemer" <samp@cts.com>
> > To: <dakota@ait.fredonia.edu>
> > Subject: Re: Gibson Cat-back Exhaust.....
> > Date: Tue, 10 Jun 1997 13:25:00 -0700
> > Reply-to: dakota@ait.fredonia.edu
>
>
> > I did... 212hp to the ground on my '95 V8, and 277Ft lb.
> > of torque to the ground.
> > I member talk about a 18% loss through the drivetrain, so
> > 212 to the ground works out
> > to be about 259-260 hp at the flywheel, and 338-340 Ft. lb.
> > of torque at the flywheel...
> > I have DT headers, 3" cat back exhaust, K&N FIPK, and a MP
> > SBEC... 30 hp increases
> > from and exhaust system alone at highly unlikely... If I
> > factored in each item's claimed
> > hp increase (headers 25 hp, MP SBEC 25 hp, cat back exhaust
> > 20 hp, and DT headers
> > 18 hp), I would have 378 hp at the flywheel, and 309 to
> > the ground!! **I wish**
> >
>
> >
> > Sam '95 SLT
> >
>
>
> Sam, I wonder how close dyno results are from
> place to place. I have pretty close to the same
> setup as you but my numbers are different. I
> don't feel my rockers gained me much because my
> track times did not fall. The MSD and pulleys
> droped my time by 3/10 of a second, I can see 10
> hp but I hardly think thats 20 lb/ft of torque?
> especially since you tested with headers?
> What kind of track times do you get? 14.8 was my
> best, but I am pretty consistant at 14.9 - 15.0.
>
>
> Dyno run #1
> max power = 221.2 max torque = 294.7
>
>
>
> Dyno run #2 (removed air filter)
> max power = 222.2 max torque = 294.5
>
>
> Alan...
> 94',SLT,5spd,MP SBEC,suregrip,3.21
> gears,flowmaster cat back exhaust,MSD
> ignition,Underdrive Pulleys,1.7 Roller Rockers)
>
Funny thing... I tested on a hot day, but
the 'corrected' info. is supposed to take that into
account. The gearing of a truck may/maynot make
a difference (how the HP is put to the ground, thus
rear wheel hp.. so I think it does make a difference).
My runs were done with everything on (DT headers,
etc.)... My best run of 15.4, 90.5 mph... Part of the
deal is me (I spin 'em like crazy, even with my new
255-60's)... You have a club cab right??? So weight
shouldn't be an issue... The final issue might be
the fact that every truck is a little different (some more
HP than others from the get go).
Sam '95 SLT - Slow Poke
"I'm not WOORTHYYY"
:P
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