How much Hp/Tq will a 6.0L put to tires...
12-23-2006, 09:31 AM
#13
Cuz I AM a BADMOFO
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Originally Posted by Stampede4ever
Lets say LQ4, and the 60e.
Thanks.
Thanks.
12-26-2006, 02:57 PM
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How did I come up with that? I have seen it. Oh, I also teach math at the University here. It is just simple mathematics.
Take a truck with 3.73 gears and run it on a dyno that measures HP at the rear wheels and get a baseline. Change gears to a lower ratio and run it again. With lower gears, more HP will be "seen" at the rear wheels. It is simple math. The rear axle ratio multiplies torque. The lower the gears, the more torque multiplication you will see.
As I said I have also seen it. My neighbor owns a Dynojet dyno and I hang out at his shop quite a bit. I have seen the difference a set of gears can make. The place I work also has a new Mustang dyno with magnetic braking.
Mike
Take a truck with 3.73 gears and run it on a dyno that measures HP at the rear wheels and get a baseline. Change gears to a lower ratio and run it again. With lower gears, more HP will be "seen" at the rear wheels. It is simple math. The rear axle ratio multiplies torque. The lower the gears, the more torque multiplication you will see.
As I said I have also seen it. My neighbor owns a Dynojet dyno and I hang out at his shop quite a bit. I have seen the difference a set of gears can make. The place I work also has a new Mustang dyno with magnetic braking.
Mike
Last edited by 83 Chevy; 12-26-2006 at 03:07 PM.
12-26-2006, 03:01 PM
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Originally Posted by BADMOFO
Mine is TOTALLY STOCK with a good tune and cat-back. LQ4 4L60E did around 300/300. This was on a Mustang Dyno...not one of those DynoJet hampster wheels.
Mike
12-26-2006, 04:14 PM
#19
TECH Veteran
There is some difference in the gearing as far as rwhp, but not big. The biggest reason for the difference is in the tire speed. It takes alot more hp to turn the tires and differential to 160mph tire speed with a taller gear on the dyno than it would to say 130mph with a deeper gear. My guess would be around 300rwhp and 320ftlbs torque.
12-26-2006, 10:28 PM
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Originally Posted by 83 Chevy
Mine was on a Mustang dyno also, but loaded. It has a magnetic brake and simulated wind drag and weight of my truck. Is that the way yours was run? Those are pretty high numbers for an LQ4 stock.
Mike
Mike
Mine was run in 3rd gear (1:1) up to about 5300 rpm, with a 3.42 gear and a 28.9 inch tire.