Originally Posted By Monte_Smith
Originally Posted By gdonovan
Originally Posted By Monte_Smith
Don't use that ancient chart.........All those tunes are DEAD RICH


I have the newer one downloaded from Holley, comparing them now.
I didn't go through and really optimize EVERY jetting chart we had, but most of them are better. Just nowhere as clean as they COULD be. Still VERY generic and also still on the pretty darn rich side.

As an example, Bang Shift did a dyno test at Westech a couple years ago on a very mild small block. Chad called me and got tunes. They stuck with the same nitrous jet throughout entire test, but on the fuel side, they used "old school" jetting, our newer jetting, my crisp jetting and my "race" jetting. Even with only a moderate size tune, the HP swing from top to bottom of test was over 100hp.


Monte what do you suggest for jetting for a dual quad with 6-7 psi fuel pressure? 150/175/200 hp levels?

The engine can take it and then some, its run high levels in the past when called upon while.. racing off the track. At one time I was running stacked systems with fairly stout settings.



"I think its got a hemi"