TBI tomfoolery (was cam duration)

[CSH-HQ]

>Actually, I'm planning to eventually go to a Torker single plane (have one),
>and port injection. Might stay with the '747, might do to a '730, don't know
>yet. '730 has definite advantages.

FWIW, the best sneeky manifold I've found is a Weiand 7225.  Single plane 
w/EGR that when painted black almost looks stock, kinda lame down low, but 
with a 2800 stall converter is nice.
>
>Right now, I have a Performer RPM (dual plane) on the car, and a 5.7L TBI
>ready to bolt on.

One thing I never liked with a dual plane, you wind up with four pairs of 
matched runners.  Engine is never right.  Always a compromise.
>
>I think this is the second time in a couple of days you mentioned a vacuum
>referenced FPR for a TBI. I'm not sure of the reason for it, as your adding
>another tuning variable. Fuel pressure and injector flow changes with manifold
>pressure. In port injection it's done to eliminate a tuning variable.

Running large injectors on my TBI took using two FPRs.  One vacuum 
referenced, and a second to clip max FP.  Was the only way at the time to 
get the motor to pull cleanly.  Light car gears loose converter takes alot 
of intial fuel.
>
>You know', one of those Smokey cross ram jobs would be kinda cool
>with dual two-bbl TBI's.

With the way the plenum is the difference in velocity really isn't an issue.
and the cross fire I got has 2 butterflies already installed,

 You wouldn't know where I could get one,
>would ya'? <g> I could easily go this way.

Found it on eBay, won't talk about the price, but it's good, and the only 
one I've seen in 15+ years.
agrumpy
>
>BobR.
>
>CSH-HQ wrote:
>
>> Just for dumb ideas, if your running a TPI level of fuel pressure, why not
>> use a vac referenced fuel pressure regulator, a set of P+H 4/1, and a 730.
>> Then just consider it a wet manifold TPI.  If running a single plane I don't
>> see where the firing rate of the injector would be as critical (please note
>> I have my CSH, with chinstrap on).  Specifically I looking at a cross fire
>> set of TBs on a vintage Smokey Ram manifold.  Only real advantage is when
>> using diacom.  OK, better/more tables, then 747 in a way.
>>
>> On a similiar not has anyone tried just clearing as many tables out of a 730
>> that aren't used for off-road applications?.
>> Grumpy
>>