You can type here any text you want

Newest Dyno Numbers

Welcome!

By registering with us, you'll be able to discuss, share and private message with other members of our community.

SignUp Now!

Chyke

New Member
Joined
Jun 13, 2002
Messages
88
Well, Just took the car off the Dyno. I'm finally getting somewhere. Pull number 5 today neted me 525.2 RWHP and around 650 ft/lbs tq. I say around due to the automatic. I never trust the torque numbers. Car has already run a high 9. That was with 471 RWHP. Looking forward to makin' a run.
 
How much boost and timing. Also at what rpm where both of these numbers from?

Do you run a lockup or NLU torque convertor.

BTW- Nice ride.

-GNX7
 
22 degrees total timing, 26 psi boost.

hp was around 5800, torque was around 3800.

Non lock up converter, I'm running a powerglide.
 
Originally posted by Chyke
Well, Just took the car off the Dyno. I'm finally getting somewhere. Pull number 5 today neted me 525.2 RWHP and around 650 ft/lbs tq. I say around due to the automatic. I never trust the torque numbers. Car has already run a high 9. That was with 471 RWHP. Looking forward to makin' a run.

Excellent numbers!

Maybe I misunderstand something though? If you dont trust the torque numbers than you cannot trust the HP numbers. The HP # is derived from the torque # mathematically.
 
Good numbers!

I was wondering what was your cars weight. And what air ratio were you running? Because mine is still rich but am going to get it taken up to in to the 11.5 area now down around 10:eek: . Cant wait to see it's potential when closer to right. Just need that final adjustment. Then maybe bump the boost up!

Steve
 
I understand your point regarding the correlation between the hp and trq numbers. I do however know that in this situation (for some reason, most likely related to torque converters) this derivation isn't linear on chassis dyno's. I have had disscussion about this with DynoJet and several other Dyno manufacturers. Many experienced tuners will tell you the same thing. Apparently the log for HP calculation is based on time and velocity. More accurately time of the dyno pull and terminal velocity of the rollers(figuring in an aceptable variable for average weight of the vehicle). One might argue that you should be able to determine torque in a similar fashion. Remember however that torque will tell you how agressively the rollers were turned. With a stick car there is a direct link albeit clutch slipage. I'm just reporting the number. I also accept the fact that nothing is perfect, so we need to find an acceptable level of comfort with our data.

My A/F was 11.7 to 1
 
Horsepower is a measure of work. 33,000 ft / lbs / minute.

Lift up 33,000 pounds one foot in a minute and that is your work done. You can have 1000:1 gear ratio or 50:1, doesn't matter. Torque is a force expressed in lb/ft. Ten pounds on a stick one foot long is 10 ft/lbs. 600 ft/ pounds is like a one foot long stick with 600 pounds on it. Or, one pound on a 600 foot long stick (weightless stick).

Chyke, why a powerglide? What is your tire / rear gear / first gear in the glide? Doesn't the single shift force you to shift over 6K? I want to run a glide but that gear split worries me. Did you use a BOP or a Chevy case glide?

Roger
 
Originally posted by Chyke
I understand your point regarding the correlation between the hp and trq numbers. I do however know that in this situation (for some reason, most likely related to torque converters) this derivation isn't linear on chassis dyno's. I have had disscussion about this with DynoJet and several other Dyno manufacturers. Many experienced tuners will tell you the same thing. Apparently the log for HP calculation is based on time and velocity. More accurately time of the dyno pull and terminal velocity of the rollers(figuring in an aceptable variable for average weight of the vehicle). One might argue that you should be able to determine torque in a similar fashion. Remember however that torque will tell you how agressively the rollers were turned. With a stick car there is a direct link albeit clutch slipage. I'm just reporting the number. I also accept the fact that nothing is perfect, so we need to find an acceptable level of comfort with our data.

My A/F was 11.7 to 1

Great numbers, sorry to confuse the post! :)
 
Awsome numbers....I am planning on going soon hopefully I will put something respectable up...
 
Back
Top