My experience is best is dyno runs, but it is the most expensive unless you have a buddy that will let you have as many runs as you need to get a handle on your tune-up. Then you can send your dyno chart to your converter company to get your engine matched to your converter.
One thing I have learned is using the dyno tune-up at the track it will be on the fat side, mostly because the engine dyno loads the motor more.
Another issue is finding a dyno shop that will let you run alky, it is stinky, and they need an alky only fuel tank. The best dyno shop will also let you run with zoomies instead of collector pipes.
With my 1'st SBC JrFuel combo I had Don Enriquez at Hilborn and Bob McKray [ ex Hilborn staff, and engine builder and tuner for Don Enriquez JF ] set up the combo, and learned from there.
With our early Hemi, Gene Adams set-up that combo, along with building the Hemi. Our last Heritage championship was with the Adams Hemi. About 3 years ago I had Kinsler build me a set of angle cut SBC injectors, to make injectors/stacks as short as possible for better hi-rpm hp. But I started with my Hilborn tune-up. ie same pump size, nozzles, by-passes, BV seting, of 18%.
As a riminder, Heritage JF rules are iron heads, iron block, under 410 ci [ new rule allows 430 ci] stack injectors on pure alky, and zoomies.
My advice , if you don't have a dyno buddy , is call, send your injectors for base line set-up to Spud, Gene Adams, or Hilborn. Not that other injector guys can't do a good job, but that's all I have used. i can't tell how many teams get lost on their tune-up , by getting off on an idea, and when I've told them to go back to their Adams base-line tune-up, they get better. BTW Don Enriquez is real good at giving phone advice , no matter what brand of injectors you have.
Call me if you have
's 805-444-4489
