Power numbers
#1
Whistle Truck Guy
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Join Date: Sep 2005
Location: The Middle of Nowhere, Oklahoma
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Power numbers
A couple weeks ago I got the blue truck tuned. The turbo system is a Trick kit. I originally ordered the kit for a 1000+ hp build, but by the time I got taxes paid and the truck got done nickel and diming me to get it done, I didn't have the cash to build a motor solid enough to hold 1000+ hp. So I bought an on3 76mm turbo to run on the 4.8 for a while. The turbine is 65mm and the housing is a .81 a/r. Awful small.
When I got the truck tuned, it made 508hp at the tires on e85 and 15psi. Is this about normal or is it kinda low? I've read many write ups about 4.8's making 600-700hp on a small turbo like I have. Is my turbine housing too small? Even the tuner asked why the truck wasn't making power. The long block is all stock except for a TSP 220 cam. Could it be lifting a head or pushing thru the head gasket, since the head bolts are stock? I haven't got to drive it enough to be able to tell if its burning off coolant. Any help is appreciated.
When I got the truck tuned, it made 508hp at the tires on e85 and 15psi. Is this about normal or is it kinda low? I've read many write ups about 4.8's making 600-700hp on a small turbo like I have. Is my turbine housing too small? Even the tuner asked why the truck wasn't making power. The long block is all stock except for a TSP 220 cam. Could it be lifting a head or pushing thru the head gasket, since the head bolts are stock? I haven't got to drive it enough to be able to tell if its burning off coolant. Any help is appreciated.
#4
TECH Enthusiast
iTrader: (4)
i just finished the tune on my 4.8 yesterday and made 626/599 at the tire with an on3 76mm with a .96
specs are in my sig.......
http://youtu.be/xczCZG6JXZc
specs are in my sig.......
http://youtu.be/xczCZG6JXZc
#5
TECH Senior Member
iTrader: (5)
i just finished the tune on my 4.8 yesterday and made 626/599 at the tire with an on3 76mm with a .96
specs are in my sig.......
Turbo LS swapped 454SS chevy truck - YouTube
specs are in my sig.......
Turbo LS swapped 454SS chevy truck - YouTube