734 RWHP & 745 Torque on a 426 Maggie @ 12 PSI

[JimIsland-SRT8]

Big numbers and torque from hell......congrats bud.

[RT-5.7L]

Great numbers

[BMWDON]

torque monster!!! how the hell do you get anything to hook up with #'s that high that soon? like driving on snot impressive nonetheless man, wow!

[Jadera]

torque monster!!! how the hell do you get anything to hook up with #'s that high that soon? like driving on snot impressive nonetheless man, wow!

Kinda scared to hook up..waiting to reinforce the rear end, axles, clutch, driveshaft, complete hop-not kit just to name a few....

[Jack SickSRT]

Kinda scared to hook up..waiting to reinforce the rear end, axles, clutch, driveshaft, complete hop-not kit just to name a few....

Good idea!!! you're DEFINATELY at the BREAK some sh!t point. AWESOME numbers BTW. Gonna be a handfull out of the hole. VERY NICE!!

[Knuckles]

Any track numbers from this Beast yet?

[Jadera]

Any track numbers from this Beast yet?

Im too scared to break stuff, momma would kill me! I know, I know, I'm a big wuss.

[Magnumb_SRT]

Awesome numbers!! Congrats and you have quite an animal on your hands. Looking forward to your feedback after some driving time on the street and strip.

Nice job A.J. and team Arrington!!

[Muscle Car]

Awesome car! Look at all the big boys in this thread. I want a 426!

[Crazypete59]

Well ... beautiful car, and good #'s, but it's SAE power & torque, not DIN power & torque...
So I'll say at least -10% for rwhp & rwtq, so ~660rwhp for a 426@12PSI is not so amazing...

[Jadera]

Well ... beautiful car, and good #'s, but it's SAE power & torque, not DIN power & torque...
So I'll say at least -10% for rwhp & rwtq, so ~660rwhp for a 426@12PSI is not so amazing...

I might be wrong, won't be the first time or even the last time, BUT.....

1st off, we are in America not Europe (DIN is the European standard), so SAE is the standard here.

2ndly, to find DIN, you multiply SAE by 1.0139, therefore 734 RWHP x 1.0139 = 744 RWHP DIN and 744 RWTQ x 1.0139 = 754 RWTQ DIN. The results are higher in the DIN standard! I could say na nee na nee boo boo, I'm better than you you, stick your head in doo doo, but I won't, I won't.
THIS IS MERIKA DANGIT, AND I'M A FREEDOM LUVIN, RED BLOODED, IGNANT, AND RUDE, DON'T FORGET RUDE MERIKAN!!! Lol!

[Crazypete59]

hmmm.... I see "SAE power" on your pic, not "Rear Wheels power"...
Take a look on Wikipedia and you'll see that's not the same...
Maybe it's just a unit mistake on the pic, but if not, you have less than 734hp on the rear wheels... (because of transmission loss)

(Sure, I'm just a damn' frenchie.. but I luv US big blocks, with big "Rear Wheels HP" #s ... )

[Jadera]

hmmm.... I see "SAE power" on your pic, not "Rear Wheels power"...
Take a look on Wikipedia and you'll see that's not the same...
Maybe it's just a unit mistake on the pic, but if not, you have less than 734hp on the rear wheels... (because of transmission loss)

(Sure, I'm just a damn' frenchie.. but I luv US big blocks, with big "Rear Wheels HP" #s ... )

As I said before, I might be wrong, but I thought all chassis dyno's (engine still in car / wheels on roller type) measured and reported WHP compared to a engine dyno that measures power strictly with your engine only (engine out of the car type).

Engine Dyno Operation

• For testing on an engine dyno, remove the motor from the car. Hook the engine up to one of several different types of machines that measure power created at the engine's crankshaft by causing the engine to operate an external machine. The most common of these devices is the water brake dyno, which uses a fluid coupling to perform work on a pump used in measuring engine power.

Chassis Dyno Operation

• A chassis dyno measures the actual amount of power the car is putting to the ground at the wheels. You do this by putting the car on rollers, which spin in the opposite direction of the car's wheels, keeping the car in place. The rollers measure how much torque a given rpm creates in a given gear. The vehicle's horsepower is calculated from the torque measurement. The main advantage here is that the dyno run can happen while the engine is still in the car.

Power Measurement Differences

• Engine and chassis dynos return different power numbers because the chassis dyno must also compensate for the power lost through the car's transmission and other drivetrain components. Engine dynos are said to measure power "at the crank," or "at the flywheel." For a chassis dyno, power is measured "at the wheels." The wheel horsepower figure will always be lower, though the exact percentage varies car to car, and dyno to dyno.

Read more: How the Chassis Dyno Relates to the Engine Dyno | eHow.com http://www.ehow.com/facts_7855615_ch...#ixzz1s7HrwBkK

Pierre and A.J. Hemituner were well aware of my goal to get to 700 RWHP when they started my build and Arrington Performance's dyno measures at RWHP as was told by them. To verify my numbers I double tapped them at a Mustang performance shop (I know, I know blasphemy!) called Competition Auto of Spring Lake, NC., which also measures at RWHP and they gave me the same numbers! To beat a dead horse, I also talked to Josh at HHP and he said that he could achieve similar numbers at the wheel with my set up. So if I divide that by .85 (manual transmission) I get about 864 crank or at the flywheel IAW the SAE standard!

Crazypete, i'm just ribbing ya, its all in fun, but na nee na nee boo boo!

[Crazypete59]

I know you're kiddin' me

But just for the knowledge :
- SAE is, at first, an engine dyno test protocol, without accessories (or just a few) and, exhaust system ; DIN is also an engine dyno test protocol, but with all the OEM accessories and exhaust system, that's why SAE numbers are a little higher than DIN numbers.
- yes, US hp are a little higher than metric hp (746W vs 736W *the 1.0139 factor ), but you can give a DIN or SAE power in US hp, metric hp, or kW... SAE & DIN are only protocols, not units.
- and (the horse is not dead, it's still moving...), tell Pierre or/and A.j to change title on their graphs : SAE power is NOT a Rear Wheel Power.

PS : some chassis dyno can measure DIN power, with a manual trans car.

[1FST4DR]

who gives a schit about sae or Din. Take it to the track already.. IMO you are arguing the difference between a metric or a standard socket. Dynos are for tuning. The timeslip wont lie....