I NEED HELP PLEASE!!!!!!!!!!!!
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I NEED HELP PLEASE!!!!!!!!!!!! - 4/15/2008 7:26:38 PM
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1bad08silverado
Posts: 4
Joined: 4/12/2008
Status: offline
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I have a 08 5.3 silverado crew cab. I have currently made the following upgrades K & N air intake system, Flowmaster Super 40 Exhaust and a Diablo Predator Programmer. I have not put the truck on a dyno, but I've been told it should be around 380 hp. Is this info correct. I am looking to make other upgrades and try to get around 650-700 hp. What do you recommend as my next upgrade(s), Turbo, nitrous?? Please help I do not know a great deal about truck performance but a huge addict on the issue.
Thanks,
Heath
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RE: I NEED HELP PLEASE!!!!!!!!!!!! - 4/16/2008 10:52:55 AM
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jmack91z28
Posts: 164
Joined: 2/27/2008
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Are you sure you have the money to make 700hp out of a brand new, under warranty, truck?? And why in the hell would you buy a brand new, under warranty, truck, to make 700 hp?? Is this a joke?
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1994 K2500 454 4L80E 14bolt 10.5" w/ 4.10's
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RE: I NEED HELP PLEASE!!!!!!!!!!!! - 4/16/2008 10:57:38 AM
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ax7221
Posts: 190
Joined: 4/4/2007
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I would venture a guess that you're infact under 380, as the 5.3l is listed by GM as having 315 hp, the only thing I could find right away on the predator as far as dyno results go is 20-30 HP for trucks/suvs so using those numbers, you'd have around 345 max with the K&N and Exhaust, and I doubt the K&N and exhaust is pulling 35 extra HP maybe 20-25. Then again, I know GM used to underrate engine performance to easy insurance cost to the consumer, not sure if thats the case anymore. Either way, you're probably pretty close to 380
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RE: I NEED HELP PLEASE!!!!!!!!!!!! - 4/16/2008 11:00:58 AM
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ax7221
Posts: 190
Joined: 4/4/2007
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jmack, I agree, if I wanted a 600+ HP truck, id get a smooth running mid 80's or 90's truck and save money for chip, super charger and nitrous, no reason to spend the extra $15-25K for new truck accessories if you just want a speed demon.
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RE: I NEED HELP PLEASE!!!!!!!!!!!! - 4/16/2008 11:15:55 AM
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jmack91z28
Posts: 164
Joined: 2/27/2008
Status: offline
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There ya go ax7221! Get a damn 1990 454SS, pull the TBI system off, go to my favorite site enginekits.com, get a good set of aluminum heads for about $1200 complete and an edelbrock rpm air-gap intake, holly 850 double pumper, and put a decent cam in it. That'll get ya going at around 500hp or more, and you'll spend a whole lot less. Plus it comes with the TH400 tranny and will handle the extra HP very well.
And yea GM DID underrate their motors, and it was mainly their older big blocks. Like the LS6 in the chevelles and vettes were rated at like 440hp roughly, but dynoed at like 550hp, stock. I don't think they underrate anymore though.
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1994 K2500 454 4L80E 14bolt 10.5" w/ 4.10's
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