i made a comment on my local forum about a 826hp EVO 8 that only put down 597tq...saying that compared to the HP its not alot of tq...next thing i know this guy is telling me that the EVO puts down 3800lb-ft of tq in a certain gear at a certain rpm, and thats way more than my truck puts down.

so now he says that if my truck were to dyno 800tq, then im really putting down 800x3.54 (gear ratio)=2,832tq to the ground...

who'da thunk it?

 

lets see... 250x2.73=682.5 and the 250 is a factory # so im prolly lookin at about 200 lb/ft

 

Yeah, but you're also forgetting that 0.73 6th gear, so that actually takes some of the torque away, right

These ricers scare me sometimes!
Chris

On edit!!! I also forgot tire size...you need to add that in too!!

 

Multiply your flywheel torque by 1st gear ratio times rear axle ratio. That'll blow him away!!

Rusty

 

Isn't that backwards. I mean your turning 3.73 to 1. So it would actualy decrease your torque.

I mean if you had 500lbs of torque and you had a 1. to 3.73 ratio, then yes you would amplify the torque rating. However not the other way around.

No way a ricer has that much torque, i don't even think it weighs that much.

It's amazing the caculations people come up with. Next thing you know my truck has 30lbs of thrust comming out of the jet engine turbo

 

Let's assume my truck is stock with 505 lb-ft of torque.

1st gear ratio in the NV5600 is 5.63:1

Rear axle ratio is 4.10:1

Therefore, maximum theoretical torque delivered to the rear wheels is:

505 x 5.63 x 4.10 = 11656 lb-ft

Compare that to the ricer's 3800 lb-ft!

The transmission and rear axle multiply torque but cannot multiply horsepower.

Rusty

 

that 3800 number of the evo came from a 4th or 5th gear direct drive dyno pull...so no tranny gearing to mutiply, just 597x(rear end ratio)

i just found this funny that he wanted to trick me by getting super technical on me

 

3800 lb-ft / 597 lb-ft = 6.37:1 final drive ratio? Sounds pretty low to me for a car with short tires, a 7000 RPM redline and an advertised 155 MPH top speed!

At any rate, he's just playing a gearing game. That being the case, I'll submit my puny 762 lb-ft (dyno) x 5.63 first gear x 4.10 rear axle = 17589 lb-ft for him to beat.

Rusty

 

Couldn't you just ask him to hook up via a heavy duty chain, and see which one really does have more power??? I mean a nice little love bump should pretty much destroy the huge race wing, plastic ground efects, and pretty much crumple the frame.....

 

i offered to get the chains and hook them up...i figure the evo is AWD, has more HP and technically more tq than me (depending on gear) so it should pull me, ill even be in 2wd

 

I'll hook up to the Evo!!

1189 lb-ft @ flywheel X 3.73:1 Axle ratio X 5.63:1 1st gear X 2.72:1 low range 4X4

= 67,915 lb-ft of torque @ the rear hub

 

I will hook a couple of em at the same time.......

 

grandpa always said there is no replacement for displacement. The 'ol evo and its 2.2L 4 banger aint got nothing on the 5.9. Hooking chains you also gotta look at hitch hight and total vechial weight. Maybe even tire surface aera on the ground, if he has wicked wide tires there is more friction there making it harder for you to pull him? The last one is just a shot in the dark, does it make sence?


COop

 

Shoot, I'll drop my hitch down to their level and put skinny's on my truck if that's what it takes.

 

Spinners...the momentum of the spinnin' dubs will keep you going...even if you're stopped

Chris