5.3 silverado how much power
07-08-2013, 07:42 PM
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5.3 silverado how much power
i got a 2001 silverado has a 05 tahoe 5.3 in it how much power to rear wheels yall thinking im making and what tuner do yall recomend im lookin into blackbear the most but i have the following mods
pacesetter longtubes in to a y pipe and maganflow
slp 25% undedrive pulley
ported and polished throttle body
ported intake manifold
cold air intake with airraid tb spacer
electric fans
3:73s
and a diablo but im bout to junk it and get a real tune how much power do yall think im puttin down ?
thanks
pacesetter longtubes in to a y pipe and maganflow
slp 25% undedrive pulley
ported and polished throttle body
ported intake manifold
cold air intake with airraid tb spacer
electric fans
3:73s
and a diablo but im bout to junk it and get a real tune how much power do yall think im puttin down ?
thanks
07-08-2013, 10:27 PM
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You honestly havent gained a whole lot. Youve probably gotten some better throttle response out of it. And im sure it feels quicker to you but truthfully I doubt youve gained much over the 285 there rated bone stock.
07-09-2013, 11:07 AM
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thanks for the info yall it does feel alot more quicker by the seatometer im tryin to get it around 315 wheel somewhere in there i was gunna do a tsp 220 or 224 cam and springs but time i went to go order it my tci 3k stall broke so i didnt have the money to order the cam and new stall so i put it on the back burner and i was thinking bout go 4:10 would that be worth the diffrance from 3:73 and do yall recomend any other power mods besides like a turbo or supercharger haha
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07-09-2013, 10:04 PM
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07-10-2013, 07:11 AM
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Im not bashing your truck at all man. Not trying to **** you off either but I think that is way high. Get it dynod before you start with any more mods and see where youre at then again later after some power adders
07-10-2013, 02:47 PM
#10
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I bet you're looking at 240RWHP as well with those mods. You haven't actually added much horsepower to the engine, maybe freed up some but haven't gotten into adding any yet. With a stock cam all those porting mods basically do nothing for you right now. With the headers you might slightly improve breathing but again on the stock cam the longtubes are just overkill and not really netting you any power.
FYI: 243's don't do anything for a stock engine. Their increased flow characteristics need a bigger cam.
A good cam will add ~60HP and in some cases as much as ~80HP but that's pushing it. To give you an idea:
$750 should get you the cam ($400), springs ($300ish) and pushrods ($50ish). Spend the rest on a good tune, dyno tune would be preferable for a cam swap.
400RWHP is unrealistic for $1000. I might not have made it there with $5300 total into it, not counting what it took to build and swap a 4L80E onto it.
These are my dyno sheets from the cam swap (these precede the current modifications):
Difference on with cam and no cam (The low run was on tune alone):
Final outcome:
FYI: 243's don't do anything for a stock engine. Their increased flow characteristics need a bigger cam.
A good cam will add ~60HP and in some cases as much as ~80HP but that's pushing it. To give you an idea:
$750 should get you the cam ($400), springs ($300ish) and pushrods ($50ish). Spend the rest on a good tune, dyno tune would be preferable for a cam swap.
400RWHP is unrealistic for $1000. I might not have made it there with $5300 total into it, not counting what it took to build and swap a 4L80E onto it.
These are my dyno sheets from the cam swap (these precede the current modifications):
Difference on with cam and no cam (The low run was on tune alone):
Final outcome:
Last edited by Suburbazine; 07-10-2013 at 04:40 PM.