rmchrgr
Well-Known Member
Good story.
The two big win-win takeaways.......
It didn’t eat the cam...... no rear seal leak.
Power seems commensurate with the combo.
Dyno sheet critique.......
Imo, the dyno carb isn’t all that dialed in(at least not for that combo).
Big lean hole in the middle.
Builds like that rarely respond favorably to a/f ratios in the 15’s.
Fuel flow between front/rear isn’t balanced that well.
Up towards the top of the pull the a/f ratio is getting more normal, so it’s doubtful a different carb would have yielded drastically different power.
Checking the uncorrected power from the fuel flow and bsfc numbers....... the uncorrected power was actually higher than the corrected power.
You don’t get air like that very often.
At 5400, 94.5 + 88.5/.404 = 452.9hp uncorrected.
Cool! Guess the air was pretty good!
I forgot to mention that he used a wooden, tapered four hole spacer. It wasn't anything trick.
He did offer to duplicate his carb recipe for us for a small fee if we bring him a double pumper with adjustable air bleeds. Jury is still out on that. I would like to see if that vac. sec. carb can be made to work.
This engine would probably be a good candidate for EFI but that's not in the budget right now.