4.8L w/4l80E = 730HP/747TQ
04-12-2012, 10:28 PM
#1
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4.8L w/4l80E = 730HP/747TQ Basic setup is:
4.8L with....
KB racing 76mm Kit, with a Extreme Turbo Systems intercooler
02 LS6 Cam/PAC 1518 Valve springs
Ls9 Gaskets/ARP studs
E85/80lb injectors/2 Walbro 400 with BAP at 17.5 volts
Dry 35 Shot
JakesPerformance 4l80/Circle D tc
Made 627/650 on 16psi. Then the dry 35 shot pushed boost to 18psi and made 730/747. Very happy with it, looking for deep 10's next time to the 1/4.
GMC RST 730HP/747TQ - YouTube
4.8L with....
KB racing 76mm Kit, with a Extreme Turbo Systems intercooler
02 LS6 Cam/PAC 1518 Valve springs
Ls9 Gaskets/ARP studs
E85/80lb injectors/2 Walbro 400 with BAP at 17.5 volts
Dry 35 Shot
JakesPerformance 4l80/Circle D tc
Made 627/650 on 16psi. Then the dry 35 shot pushed boost to 18psi and made 730/747. Very happy with it, looking for deep 10's next time to the 1/4.
GMC RST 730HP/747TQ - YouTube
04-13-2012, 01:15 AM
#3
You can tell that it cannot breathe though. Look how quick the power drops off. Both tq and hp climb fast, but they were not there before and they are not there after 6k either.
Turn the factor to SAE and the power goes down too. Not sure why there arent a bunch of bench racers coming in and saying that yet....
Turn the factor to SAE and the power goes down too. Not sure why there arent a bunch of bench racers coming in and saying that yet....
04-13-2012, 02:20 AM
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Actually that's because the dyno wouldn't load the truck. It makes 20-21psi on the street, only 16 on the rollers and dropping about 2psi by 6500, the graph shows just that.. This is a graph from last year on a different dyno, 15psi, same cam/intake. So far this year has went 6.6s@104, no nitrous, 4400 weight.
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04-16-2012, 08:38 PM
#10
those power numbers are probly conservative considering what the truck ran with a 4400lb race weight.
If you do the math, based on race weight, ET, and MPH he got over 800hp at the flywheel and that was on the magnum 7268.
Now he has the 7668 and is going to run the same 22ish psi, so in theory he have about 900hp at the flywheel.
If you do the math, based on race weight, ET, and MPH he got over 800hp at the flywheel and that was on the magnum 7268.
Now he has the 7668 and is going to run the same 22ish psi, so in theory he have about 900hp at the flywheel.
04-23-2012, 05:09 PM
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It's been a lot of fun man, no question there. I think it would have went 10.2s next pass with a better 60. I need to work on getting into the mid 1.4 before I add any more HP. She's straight moving out right now for a led brick. lol
