[Verdoro 68]

Prior to the last go round I had with the rear main on my car, I had taken it to get a baseline pull on a local chassis dyno. The results were a little milquetoast, but I kind of expected as such.

This pull was done with about 32 degrees total timing and all accessory belts in place and 91 octane. Basically driven off the street onto the dyno. The operator said to add about 18-20% to estimate crank output which would put it around 420hp and 510 ft/lbs torque. Decent torque, not so great HP. When I tore down the engine to replace the rear main I discovered a fairly substantial mismatch in intake ports so I'm sure that contributed to the results.

That said, I'm less worried about the actual numbers because I know they don't mean a lot with an automatic, but I am more surprised about how it peaked around 5k. I expected it to peak higher.

Unfortunately we didn't get a chance to play with the timing and do any more pulls because the Taylor wires and Pertronix weren't playing nice with their timing equipment. They did say they the A/F ratio was the best they'd ever seen on a Q-Jet so kudos to Ray Klemm. When I get some time I'll bring it back and do some more pulls now I've got the intake and ignition upgraded.

Mustang MD-750 dyno
4.25 Butler stroker kit
9.5:1 compression
236/242 114 roller
Port matched R69A heads
1.5 HS rockers
Ram Air Manifolds
2.5" exhaust
TSP 9.5" converter