Big Mopar Question

[pishta68]

I am thinking about M.S for my 451 Mopar. I think about 900CFM with 4 85's may be enough but I want a real world user to comment on what he/she uses. I see lots of HEI and Ford distributors being used for spark timing, but I want to stay Mopar if at all possible. Also, the premade TB's are very expensive, much more than even a prepped QFT or Demon 850 and there are still injectors to buy. So what should I start with, a used Holley 4D anolog setup? Complete newbie to this so be gentle! Thanks, And money IS an object....

[Matt Cramer]

A secondhand 950 cfm Holley TBI ought to work fine here. Some of them lack an idle air control valve, so check into which one you're getting.

If you're using a Mopar distributor, and want the MS to control the ignition, the best one to grab for this engine would be off a 400 Lean Burn. We have an article on using that distributor with MS here:

http://www.DIYAutoTune.com/tech_article ... engine.htm

[pishta68]

A secondhand 950 cfm Holley TBI ought to work fine here. Some of them lack an idle air control valve, so check into which one you're getting.

If you're using a Mopar distributor, and want the MS to control the ignition, the best one to grab for this engine would be off a 400 Lean Burn. We have an article on using that distributor with MS here:

http://www.DIYAutoTune.com/tech_article ... engine.htm

That is great info in that link. My next question would be if anyone has tried to use 2 2bbl TB's like the Corvette cross fire intake (2 TBI's on a cross ram manifold) I was thinking that only 1 IAC could be used, but both TBI's would be functional, maybe wireing the injectors like a 4 bbl, but in a 2X2 fashion? 2 junkyard 670 TBI's are cheap, one 950 is expensive!! this may turn out to be my first TBI project.

[Matt Cramer]

I've seen dual TBIs done before, not sure if trying to run two IACs or just use one IAC is best, but some trial and error should establish what works.

[pishta68]

Thanks Matt, Im doing a '65 Barracuda, so I think you know what I might have in store. A low rise dual quad intake on a stroked 400 big block running 2 670 TBI's. The whole induction package Should be cheaper than even 1 950 Throttle body. Mallory Hy-fire 7 and Crane E-coil doing the lighting.