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Originally Posted by badrich
I'm still trying to figure out how the dyno sheet from Shelby looked so good and why I ran out of gas at about 5K RPM on the chassis dyno. It was suggested that I go up two jet sizes and then retest, which I can do, but I am also wondering if I may have another problem. I am using the original Shelby high capacity mechanical fuel pump, which they said should be sufficient for my needs. I am also going to check out the size of my fuel lines to make sure they are large enough. I have wound the engine up to close to 6K RPM while autocrossing with no problems, although it did stumble when I floored it in second gear at about 2-3K RPM (I was looking at the course, not the rev counter), but a quick down shift took care of that, so even with a ton of torque it doesn't like low RPMs. Anything I have overlooked?
Anyway, here are some numbers from the Shelby Dyno sheet:
3500 RPM: 352.8 HP 529.5 Torque 12.74 A/F 422 CFM
4000 RPM: 392.6 HP 515.5 Torque 13.07 A/F 440 CFM
4500 RPM: 456.1 HP 532.3 Torque 14.68 A/F 505 CFM
5000 RPM: 509.7 HP 535.4 Torque 15.67 A/F 570 CFM
5500 RPM: 546.3 HP 521.7 Torque 16.83 A/F 644 CFM
6000 RPM: 558.8 HP 489.1 Torque 17.60 A/F 702 CFM
Looks like the S&H air cleaner will have to go into the car show only box, along with my nifty black and yellow '65 Dealer CA license plate.
Any suggestions?  Rich |
This is really a great thread guys. I love this kind of stuff.
I'm real curious were the power comes out for one of these engines once in the car. Could you share the info of air fuel and HP before the pull was shut down just to give us folks an idea of numbers?
I'm not familiar the type of dyno which was used, but is the dyno load adjustable to the estimated weight of the vehicle?