Better Performance for 2002 5.7 Vortec (Full Version)

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Better Performance for 2002 5.7 Vortec

  

Neon Randy -> Better Performance for 2002 5.7 Vortec (5/12/2008 2:48:09 PM)

I have a 2002 2500 Express Van with a 5.7 Vortec Motor. 

I'm pulling a cargo trailer with 2 harley's and am trying to get information on how to obtain more performance.  Already have K&N Filter and am running synthetic oil. 
 
When pulling a hill, the thing falls on his face and I have to downshift to 3rd 90% of the time even on flat terrain.
 
Talked with Summit and Hypertech and they say there is no performance tuner available for Express Vans though there is for pick ups with a 5.7, same motor.
 
Does anyone know of a performance tuner that is available for this model?
 
Any help would be greatly appreciated.

  
a4d -> RE: Better Performance for 2002 5.7 Vortec (5/12/2008 4:40:56 PM)

google Nelson performance, or wheatly tune. Not sure if they do or not, but give em a call or it may be on their website.

FLSTFI -> RE: Better Performance for 2002 5.7 Vortec (5/19/2008 10:58:41 PM)

Also search for Westers Garage.
He custom tunes most anything. Tell him what you have and what you want to do.

BigVanMan -> RE: Better Performance for 2002 5.7 Vortec (6/19/2008 8:34:25 AM)

I have the same vehicle. It appears ro be the red headed step child of trucks. I have spoken with every major manufacturer of performance programmer with no luck. It was a transission year for engines as after that year they were available with the LS bases engines, plus they get rew requests for van upgrades of any kind. I was told that if you swapped engine software with that of a P/U truck into the vanm there would be excessive engine detonation after being performance tuned because a van puts similar loads on an engine to that of a RV. I an looking into a better flowing throttle body and free flow exhaust to pick up small gains, also an electric fan will get you about 10HP. I am also keeping my eyes open in trader papers for a cheap 5.3 or 6.0(a 8.1 would be nice but you''ll never get one cheap, big blocks are expensive). I did regear my axle from 3.73 to 4.56, and just recieved my Gear Vendor''s OD/UD unit which will alow me to run in the power band better and give me a gear between 3 and 4 plus let me run on 4 double over when not trailering. It''s alot of work, but to a van fan..it''s kind of fun just to se what can be done.

  

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