Didn't get the car home in December like I thought. Had to order some rods and jets for the carb and they were back ordered everywhere in Canada. Parts came in after New Year's and shop finished tuning the car today on the chassis dyno. Final numbers are 267 RWHP and 310 RWTQ. When you account for driveline losses I am very happy for an A/C equipped car with cats through a TH400.

|UPDATED|1/14/2014 8:45:06 PM (AZT)|/UPDATED|

     
Very respectable numbers!

Thanks Joel. Car is coming home on Sunday!!

Greg sent me a video of his car running on the dyno.Since we can't post vids here, I put it up on my youtube page, so HERE it is!!!   Nice!

Car sounded incredible!

But I really liked "Why Africa is not a military power."  Where in the world did you find THAT? 

Thanks Darryl! Should pull pretty hard by the looks of the front end lifting up in the video. Can't wait for spring!

So your hitting 266hp , 310tq ? ? That seams pretty low for a 383 . .  You would hope with a 20% loss to be up another 100hp and have 40 to 60 more tq .. 

I think it make sense. I read a chassis dyno test of a similar 383 in Super Chevy last month with the same heads and a cam with a bit more intake duration and more lift and they were getting 285 rwhp and 335 rwtq. I running cats on mine that they weren't so I'm not that far off what they were getting. And their engine made 426 hp on the engine dyno. That's a 33% loss. That puts my 383 at about 399 hp. Quite a bit of driveline losses in these old cars. I've read other tests of some Mustangs that were seeing 35% driveline loss compared to the engine dyno.

http://www.superchevy.com/technical/engines_drivetrain/cams_heads_valvetrain/1311_383_stroker_upgrades_project_homewrecker/

The amount of power loss is dyno dependent , what dyno was used ? 

It's a fresh engine, and probably has not been fine tuned yet for max output. A little tweeking here/there will prolly wake it up even more. Running thru cats will also keep max output down somewhat. 300+ lbs/ft of torque on the street ain't nothin to sneeze at....