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hockeygm

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hey guys whats up? im coming here from the impreza wrx world, been there for about 5 years, upgraded turbo, injectors exhaust, intercooler, fuel pump, upipe, suspension, had it tuned to 21 PSI was putting out about 360HP at the crank. unfortunately my car came to a tragic ending upon my stupidity...anyways now i have a 98 gmc seirra 1500 with 39000 miles, its the base base model. 6 cylinder frigging no cd or casette lol. i have a couple questions.

1. how big is the engine? i looked it up and i found 4.3 liters. 2 what is holding this engine back? thats a pretty big motor to only be rated at 200 ponies and 3 are there any exhaust components made for this engine or am i going to have to have custom stuff made? i can only find parts for the 8 cylinder.

now i know a 6 cylinder motor is going to be cranking out much more HP from simple bolt ons but i want to do something. nothing crazy just enough for it to sound good and get more out of this engine. i was thinking headers all the way back and an intake. im gonna concentrate more on the body with this. like maybe the newer sierra rims and make the susupension a little stiffer. again im coming from a little car that had very little body roll. so i want to get that out of there too as best i can....let the roasting begin.
 
hey guys whats up? im coming here from the impreza wrx world, been there for about 5 years, upgraded turbo, injectors exhaust, intercooler, fuel pump, upipe, suspension, had it tuned to 21 PSI was putting out about 360HP at the crank. unfortunately my car came to a tragic ending upon my stupidity...anyways now i have a 98 gmc seirra 1500 with 39000 miles, its the base base model. 6 cylinder frigging no cd or casette lol. i have a couple questions.

1. how big is the engine? i looked it up and i found 4.3 liters. 2 what is holding this engine back? thats a pretty big motor to only be rated at 200 ponies and 3 are there any exhaust components made for this engine or am i going to have to have custom stuff made? i can only find parts for the 8 cylinder.

now i know a 6 cylinder motor is going to be cranking out much more HP from simple bolt ons but i want to do something. nothing crazy just enough for it to sound good and get more out of this engine. i was thinking headers all the way back and an intake. im gonna concentrate more on the body with this. like maybe the newer sierra rims and make the susupension a little stiffer. again im coming from a little car that had very little body roll. so i want to get that out of there too as best i can....let the roasting begin.

Keep it simple and start with the exhaust and intake then tune your PCM. You have A 4.3 Vortec and there are lots of things you can buy for it that will do nothing and there are things you can do that is free to get you more hp and torque.

As for your exhaust question, forget about the header and don't got larger then 2.5 inch and no duel exhaust. Your going to lose torque with anything larger then 2.5 inch :eek:

Here are a few links that should help you. ;)
http://www.magnaflow.com/
http://www.flowmastermufflers.com/
http://www.pcmforless.com/
http://gmcowners.com/gmc-forum/showthread.php?t=10251

Good luck and keep us posted. :D
 


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