what should my car dyno at the rear wheels?

[sho89mtx]

If I did a dyno after tommorow with the mods I have now and the true-dual 2.5" exhaust system, what should my dyno numbers be? around 240rwhp? Or higher? Debating if I want to dyno my car or not

thanks,
scott

 

[Markviiiedrea]

here is mine with a built tranny and a 9 inch 2800 stall
stock 94 mark with frpp 9mm wire's

 

[sho89mtx]

here is mine with a built tranny and a 9 inch 2800 stall
stock 94 mark with frpp 9mm wire's

211rwhp? If that's the case, there is no way our cars our 280hp stock. My LT1 t/a had 285hp stock and it dynoded at 235rwhp stock, so our cars should be somwhere near there unless something is wrong or Ford overated our cars

 

[Moes8]

211rwhp? If that's the case, there is no way our cars our 280hp stock. My LT1 t/a had 285hp stock and it dynoded at 235rwhp stock, so our cars should be somwhere near there unless something is wrong or Ford overated our cars

T/a was stick or auto?

i think that would make a big difference, right?

 

[1wykdmk8]

211rwhp? If that's the case, there is no way our cars our 280hp stock. My LT1 t/a had 285hp stock and it dynoded at 235rwhp stock, so our cars should be somwhere near there unless something is wrong or Ford overated our cars

211RWHP is about right. You lose anywhere from 15 - 25% thru the drivetrain on any car. Auto's are higher generally. So, if we have 280HP at the flywheel and worst case scenario we lose 25% thru the drivetrain we end up with a net of 210RWHP.

And with the T/A your 235RWHP is about an 18% loss thru the drivetrain. So, you were still in the ballbark of nominal loss thru the drivetrain. You also have to figure that your T/A was more based on performance than the Mark VIII is/was. :Beer

 

[MonsterMark]

211rwhp? If that's the case, there is no way our cars our 280hp stock. My LT1 t/a had 285hp stock and it dynoded at 235rwhp stock, so our cars should be somwhere near there unless something is wrong or Ford overated our cars

We also have a slush box for a tranny and an IRS. Lots of drivetrain loss. Numbers are dead on.

 

[sho89mtx]

T/a was stick or auto?

i think that would make a big difference, right?

both my t/a's were autos

 

[ONEBADMK8]

Walt put down 260 to the wheels at Carlisle 2 years ago in the most terrible of heat and humidity. This is with all our bolt ons at the time with a stock engine. I believe at the time he did these pulls it was almost 90 and the humidity was well into the high 80% range.

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