Just a follow-up.

I ordered my Fi Tech unit last week and it arrived Fed-ex yesterday....looks real good.

It's going on the 440" W2 small block but I'm going to prep the 427 SBF in my Cobra (weld an O2 bung in the collector and plumb a return line to the tank) for another one as well.

Wize,

Any idea on minimum vacuum in gear this system can deal with? I sent this question to FITech via email but have not seen a response yet.

Haven't read into it but the guy at Fi Tech I talked to said their system is more tunable for big cam/high overlap/Low vacuum motors than the MSD Atomic (which I think is >/= 10" Vac and no tighter than 108 LDA with 240-ish @.050 lobes). I think those are general guidelines based on a 350-400" motor though. I know my buddy Nat's 442" AMC has a 236/244 @.050 .612" lift Hyd Roller on 109 centers and it idles great.

Both motors I have in mind for the Fi Tech have about 11-12" with carbs.

It's also interesting that Fi Tech wet tests all their units prior to shipping (it smelled like gas).

Running 6-7 vacuum in gear and it doesn't skip a beat.

Wize, Wireweld,

Thanks for the feedback!

Coincidentally I did receive a response to my inquiry today and the tech indicated their system should work fine down to about 4 inches of vacuum. That should work on just about anything!

Nice! Let us know how it works out, are you planning on running your ignition with it also?