What do these # (HP and torque) tell you?

[CB]

the add says
1968 ROADRUNNER-
ENGINE IS A 440
4-SPEED PISTOL GRIP,
POSI REAR-
W/DEMON 4BBL CARB
HOOKER SUPER-COMP CEAMIC COATED 3" HEADERS TO 2 1/2"  W/CHAMBERED EXAUST,NICE SOUND. ENGINE RUNS WELL-VERY STRONG,
HAVE DYNO SHEET, 256.8 HP & 340FT# TORQUE TO REAR WHEELS

What you think you got here?

[CB]

 
4-SPEED 

[firefighter3931]

What do these # (HP and torque) tell you?

The car is slow 

Ron

[CB]

  

[Just 6T9 CHGR]

I wouldnt say slow.....I would say more reliable and mild mannered for a nice street cruiser

[firefighter3931]

I wouldnt say slow.....I would say more reliable and mild mannered for a nice street cruiser

Just kiddin with ya CB  

Chris is right...this is probably a nice driving car. Basicly a stock 440 with a few bolt ons.

Ron

[CB]

so not a ground pounding, earth shaking muscle car, huh?

[69fuchs]

That depends on the dyno, and the conditions the day it was tested.   Mustang dynos are very very stingy, my hemi only put 260 to the wheels, and the car runs 13.0 at 107mph--and the car weighs 4150 at race weight!   That figures out to be closer to 360 hp at the wheels, if you use the quarter mile calculator on moparts!!!!!!   PS   It is probably closer to 370 hp if you consider aerodynamic drag.

[Ghoste]

That number isn't just stingy, it's off by over 30%!  I'd almost think that one has some other error at play.

[69fuchs]

There was a lot of disappointment for everyone that day.   I watched a dart with a big block that runs low 11's post 320hp at the wheels with slicks on it and everything!!!   I've heard from other people that mustang dynos are very stingy.   A dyno is just a tool anyway. It can give you a baseline, then hopefully some improvements after tuning!!!   We had a dyno at our local mopar show, and it was hot and muggy, so that could have some effect on hp, but not 100 hp!!!

[cudaken]

 CB, if the Runner can hook up, I would say 13.4 to a round 12.8 or so. Dyno can be stingy butt what they are for is tuning, make sure what ever the number's your engine is in the best tune it can be in.

If Ray is right, I may have between 600 to 685 HP at the crank with my 440. If I am lucky, I might have 320 to 400 HP at the rear wheels max.

There are other factors as well, rear gear's (Remember this at the tire) did the tires slip on the run (have a video of 452's Charger on it's dyno run and chucks of slicks where flying). I think he said he made 320 HP at the rear wheels and is in the 11.8's or so.

Not a slug at all.

                           Cuda Ken

[Silver R/T]

it should be in low 14's with that setup, but theres room for the improvement