Quarter mile times? Please :D
04-08-2008, 10:02 AM
#21
Your time estimates seem a little off to me.
I have NEVER seen a 5.3 with just a tune, CAI and exhaust run 13s. Much less fairly often. High 14s-low 15s seem to be the norm for that setup.
I have owned 2 5.3 trucks, an 04' RCSB with tune, intake and exhaust with 3.73s that ran a 14.7.
My current truck is a 06' ECSB with the exact same setup, and it runs 15.0s, but with 20in wheels.
I just dont see 13s from a 5.3 without going into the engine, or running a shitload of stall and gutting the truck.
As for the 4.8s, id expect them to be 5 tenths slower with the same mods.
I have NEVER seen a 5.3 with just a tune, CAI and exhaust run 13s. Much less fairly often. High 14s-low 15s seem to be the norm for that setup.
I have owned 2 5.3 trucks, an 04' RCSB with tune, intake and exhaust with 3.73s that ran a 14.7.
My current truck is a 06' ECSB with the exact same setup, and it runs 15.0s, but with 20in wheels.
I just dont see 13s from a 5.3 without going into the engine, or running a shitload of stall and gutting the truck.
As for the 4.8s, id expect them to be 5 tenths slower with the same mods.
04-08-2008, 10:53 AM
#22
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My 4.8 RCSB went 15.25 with stock tuning, magnaflow muffler and 3.73 gears with posi, and stock air cleaner. Thats with stock wheels and a 27" tire. With nitrous its going 14.2 and thats with 20's.
04-08-2008, 01:37 PM
#23
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I wouldnt say that at all. People have proven tha the 4.8 has much potential, and is very tough. I was mostly responding to the claims of 13s with a tune, CAI and a catback.
As for the 4.8, all things being equal, same truck, same mods, same tranny, its about .5 slower than a 5.3. Obviously these are not exact numbers.
04-08-2008, 04:21 PM
#25
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04-09-2008, 04:47 PM
#26
i guess?
i thought about adding a throttle body spacer to really up the anty?
my brother actually commented that i had put too much $$ in mine already, so i figured it up. with all the parts/labor/tuning i have about $3000 tied up in the performance aspect. not bad though, when you consider it has dropped way over 2 full seconds in the 1/4, maybe closer to 3... i never ran the 1/4 stock.
04-10-2008, 09:11 PM
#27
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what do you think my 04 ecsb 4x4 would run... i have CAI, exhaust, LT's and tune with 3.73 gears on stock rims 265/70/17 and how much slower would it be if i went up 2 tire sizes to 285/70/17 ?
04-12-2008, 03:31 AM
#29
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04-12-2008, 11:49 AM
#30
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if the weather is right, im gonna say it'll put you around the 14.8ish area, i'd honestly be surprised if it went any faster.
whats a NNBS weigh in at for a reg cab shortbed?
whats a NNBS weigh in at for a reg cab shortbed?
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