If you had to do it over?
Feb 22, 2005 | 07:54 PM
#11
Originally Posted by TieRod
Both will do you a good job 6.0 gets 2mpg better than a 8.1. The 8.1 does use oil a problem with the intake drawing oil past the seals. Your right when both are SC they make near the same hp but the 8.1 will crush the 6.0 in tq. Hell I've layed down more tq all motor than allot of the SC 6.0 do. You cold do a cam, program, and exhaust on a 8.1 and get damn near the power that a SC would make. But then again it would lack the down low tq that a SC makes.
Feb 22, 2005 | 08:38 PM
#12
this is kind of a funny looking graph but check it out. 8.1 with an intercooler whipple >> http://www.dynosport.com/trucks/1.htm
Feb 22, 2005 | 08:42 PM
#13
Originally Posted by parish8
this is kind of a funny looking graph but check it out. 8.1 with an intercooler whipple >> http://www.dynosport.com/trucks/1.htm
you would have to set shift points at 4100 wonder what times that would see strange
Feb 22, 2005 | 08:43 PM
#14
Originally Posted by parish8
this is kind of a funny looking graph but check it out. 8.1 with an intercooler whipple >> http://www.dynosport.com/trucks/1.htm
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BUT! 600ftlbs, thats pretty damn stout, was that a shift spike? like a 2-3 shift, kinda hard to tell
Feb 22, 2005 | 09:51 PM
#15
Staging Lane
Joined: Dec 2004
Posts: 51
Likes: 0
From: AL
Originally Posted by moregrip
what does a sc 8.1 usually put down Tq wise?
With a tune it will put down in the neighborhood of 280 rwhp and 340 TO 360 lbs of tq.
It averages 10mpg in traffic and 12mpg on the highway with the tune .
heres some dyno sheets on it.
We had some problems getting it to hold the gear on the dyno with the tune installed , it was my opinion and the guy running the dyno that it is actually putting down close to 290 rwhp and 360 tq but we could not get it to hold third gear long enough to get it that high so we went with the safe estimates.
with a 150 shot you could be in the 420 to 430 rwhp range easy. The allison tranny will hold around 500 rwhp before you need to build it.
The whipple Sc will net about the same results as the giggly gas but cost about 7 times more. Either way its gonna run somewhere around low 14's to high 13's in a crew cab version, mid to low 13's probaly in the ext cab.
I dont have a clue what the 6.0 is capable of but i am sure its close to the same
Feb 23, 2005 | 12:15 AM
#16
TECH Enthusiast
Joined: Jan 2004
Posts: 712
Likes: 0
From: KC MO
HA!!! Got you beet. With a cold air intake, headers, a Comp Cam, and a crappy HPPIII. I made 322whp 433 wtq with a 200hp shot 504whp 640wtq and went a 12.95@ 101mph.
By the lookes of things I'd say the torque management cut it off at 4000. I've talked to a guy that had that problem. As soon as it 4000 the computer would start closing the throttle blade. He got with the guys that make ls1edit and they found a hole anther page of torque management that even the 6.0 don't have.
By the lookes of things I'd say the torque management cut it off at 4000. I've talked to a guy that had that problem. As soon as it 4000 the computer would start closing the throttle blade. He got with the guys that make ls1edit and they found a hole anther page of torque management that even the 6.0 don't have.
Feb 23, 2005 | 09:00 PM
#17
I've had them all - 5.3, 6.0, 8.1 and Duramax. Each motor can be a good choice depending on what your going to do with the truck. I'm used to driving 500+ horsepower cars that weight half of what our trucks do so I want all of the power I can get. That's why I worked through the motors over the years. I recently had an 8.1 Suburban with the Intercooled Whipple and other mods. That truck made 407hp/558ft-lb at the rear wheels and ran 13.9 at the truck. Awesome tow vehicle! Only drawback was the mileage while towing. That was 7.8 MPG.
Recently picked up a Duramax. This thing gets car like mileage without a trailer (17-18 MPG). I'll see what it does while towing in a few weeks. I expect it to be around 13.
ORDER LINE - 1-877-4-TBYRNE
SEND US E-MAIL
WEEKLY SPECIALS CAN BE SEEN ON OUR WEBSITE
Recently picked up a Duramax. This thing gets car like mileage without a trailer (17-18 MPG). I'll see what it does while towing in a few weeks. I expect it to be around 13.
ORDER LINE - 1-877-4-TBYRNE
SEND US E-MAIL
WEEKLY SPECIALS CAN BE SEEN ON OUR WEBSITE
Feb 23, 2005 | 09:23 PM
#19
Staging Lane
Joined: Dec 2004
Posts: 51
Likes: 0
From: AL
Originally Posted by TieRod
HA!!! Got you beet. With a cold air intake, headers, a Comp Cam, and a crappy HPPIII. I made 322whp 433 wtq with a 200hp shot 504whp 640wtq and went a 12.95@ 101mph.
By the lookes of things I'd say the torque management cut it off at 4000. I've talked to a guy that had that problem. As soon as it 4000 the computer would start closing the throttle blade. He got with the guys that make ls1edit and they found a hole anther page of torque management that even the 6.0 don't have.
By the lookes of things I'd say the torque management cut it off at 4000. I've talked to a guy that had that problem. As soon as it 4000 the computer would start closing the throttle blade. He got with the guys that make ls1edit and they found a hole anther page of torque management that even the 6.0 don't have.
My torque management is still holding me back some, I had westers remove as much as they could and still be safe , Its my daily driver and I really cant afford to break it while i am still making payments on it , maybe once she's payed for I will have the rest of it removed. However we did have a problem with it shifting out of 3rd and we couldn't get a complete run out of it so we settled with the 274 h.p. run , Thats why assume it's somewhere close to 300 h.p. With headers and a cam I will be close to your 322 though, dont slow down and let me catch you. Never mind I just read your sig hope the raylar parts give you what you are looking for, let me know I may go that way instead of the whipple route.
By the way what did you run with out the juice ? just wondering what 322 rwhp will get me.
