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Kerr -> RE: '02 8.1L Upgrades? (10/25/2007 7:41:01 AM)
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The answer is how much moeny do you want to spend.
on the 8100 you can expect around these numbers. Of course it depends on price and who maked the part.
1) Intake, abour 20 hp 20 lbtq. $300
2) headers 30hp 45 lbtq $500-2K
3) Cat back exhaust, 15 hp 20 lbtq $500-1500
You can also have some go into the computer and turn off the torque management on the 4L80E and you will get all the hp the truck has. On the other forums people have logged the TM while driving and GM pulls as much 60% of the power threw fuel and timing when you go wide open. They say its safer.. I bet it will just cause you do big burnout ;)
If you really want to have some fun, ( what im looking into) Is a head & cam swap. Run you from $3K + depending on how much you want. Ryler claims there head and cam package makes 425 hp on regular fuel. Crawler also makes some cams... IF you have high milage you could go all out with a board block, pistons, new crank, then the head and cam, but that would probably $8K... should be good for 550hp..
As far as forced induction you have Nitrous, turbo and blower.
Ive see a few truck with a 150 shot of spray but i would not go that way.
Whipple. make a intercooled blower that take it to 450hp and 800lbtq ( those are crank figures) its about $6500. a few years ago a guy had this on his and he burb was running low 13's at the track...
STS is also an option.. There rear mounted turbo ad 125 hp and 150 lbtq. I havent done one on a 8100 but we have done it on a 5.3 silverado.. made little over 300 wheel hp also did one a stock camaro Z28 it made 403-410 wheel hp ever pull...
My plan is this.
1) Intake, cat back
2) Long tube headers
3) ecu work to remove the tq management.
4) cam ( got have some thump thump thump with 496ci)
5) heads
6) blower on down the road...
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