does anyone else run a performer rpm intake with a 670 tbi?

 

i dont but i was interested in that and how your results were with that?? what do you have to do to make that work with your heads??

 

I'm running that setup. If your woundering about hood clearance, I'm not the one to ask, but other than that I've had some experience with it.

 

The performer TBI intake is .25" taller than stock. I run that with a .5" spacer and my hood shuts but just by a hair. I am not sure what the clearance on the performer carb RPM intake is but I would imagine that it is just as tall as the vortec version which allows for enough clearance.

 

ok i have an ss hood and i have had the performer rpm installed for some time... all you have to do is elongate the center intake bolts to fit...
i wasn't asking about the fitment issues, i was wondering if anyone else ran one and how they liked it? performance wise

 

Makes ton's of power throughout the power band. I use an adapter plate to fit my 454 tb on it. I am having some problems with fuel atomization at idle with the big throttle body combined with a cam with 110 lobe sep it seems to puddle fuel below 1000 rpm. At least thats what I think is going on. I've been playing with getting the idle cleaned up for a while with some trouble, I wouldn't worry about it, it's probably just me.

 

All the magazines in the past 3-4 months see to be evaluating intake manifolds. The performer RPM and RPM air gap are always on top. Granted this is with a carb but still. The similaraties between the two forms of induction (carb/tbi) lead me to believe that its still on of the best intakes out there.

-chuck

 

But how well do dual plane intakes work with TBI units? Are they as perky as they are with a carb or are you better off with a single plane like the Victor Jr?

 

i think its just as good i havent noticed a huge diffrence but i am running the 670 tbi from holley so i don't know how good it does??? i would like to try to fit an open spacer inbetween so that the cylinder banks are sucking from 2 holes instead of one. kind of like a mix between a single and a dual plane

 

Though I was running an rpm airgap, 670, and a 383, it still kinda goes along with the tbi thing. Origionally, I had a standard performer on the engine and ran a 13.4 at 106mph. Then swapped on the rpm airgap and slightly better tuned chip, and it was worlds beyond.
Street races lead to obliterating LS1s. The only time to the track with the combo yielded a shattered clutch on the 1st run out of 1st gear. The time slips had me just over .4 seconds faster at the 330' mark then the LS1 Z-28 next to me that went on to run a 13.6. Had my clutch held up, I'm sure I would have hit 12s on street tires.
Though I think the airgap created atomization problems w/ tbi, I think the performer would have been fine. Definetely, the performer rpm is the way to go if you are going dual plane.

 

Also, the airgap already has a recessed divider plate to help out at high rpm, and the performer should be set up the same way. I opened up my adapter plate so to have a larger opening, to create a small single plane effect, and it did improve performance.

However, I think you'll have too much plenum with your set up if you were to do that. Check my sig for the 383. The upper portion of the engine is the same as it was before it blew, just to give you an idea of airflow and what not