Anybody seen one or anybody have one they wouldn't mind sharing pics of?

 

Wouldn't that be sort of like going back to the dark ages to put a carb and wet manifold on a modern car.

Bill

 

Not really especially if you are forced induction. Better Air/fuel dispersement for the old dreaded #7 as well as a lot of guys over on LS1tech using them for the F/I. Plus I like to be different. You lose some bottom end but gain on the top in a N/A car but for F/I it works just fine. Also they are not wet. They make them specifically for the LS1.

 

For a BIG cube motor, its the only way to go.

I have one going on my LSX 454 in the next few months. Along with a 90* intake and a 100mm throttlebody.
Its being plummed for a dual stage 200 shot. Nothin like 400hp of N2o being forced down the throat of an iron block 454..

Got Wood????

 

You might have trouble clearing a stock Corvette hood.....

 

We are going to try one on a LS7. Building 90* elbow now. It can fit with an elbow to a LS2 TB in about the std location.
The guess is -25 tq and +25 hp on a motor currently making 527/519.
It is a lot of work and might not be worth it.

 

It might be -40TQ (at certain RPM's) and plus zero HP compared to a ported FAST at least.

Buddy of mine tried it on his C5 and the results were dismal. IMO the problem stems from the abrubt 90' turn you have to make to clear a stock height or near stock height hood. The front cylinders now require the air to make a very sharp high speed 180' turn at WOT when the column of air thru the intake tract has alot of airspeed and inertia making it much more difficult to negotiate the severe change in direction. A very tall elbow with a generous turn radius straightens the air out before hitting the plenum but wont even remotely clear a C5 hood.

If you are going to do the test and want to compare it to one of my ported 90/90 set-ups let me know....we could probably work something out.

When there is a better "bolt on" intake for a C5 primarily driven on the street you will find it installed between the fender wells of my car as I have no affiliation with FAST, only an affiliation with what makes the most average power and torque. Right now a properly ported FAST is the best tool for the job IMO but I am open minded and always looking for something better. I will be testing a radically altered FAST I am working on now in the next few months that may or may not be worth the time I have invested. We shall see....

Good luck either way with the swap....curious as to your results.

Tony

 

Interesting. I went to the Edelbrock web site when I read your first post and they had nothing about it. Just the old carb junk.

Bill

 

This isnt a C5 but you can see that its an old school intake but still fuel injected...best of both worlds. The air distribution is much better. Excuse the wires everywhere I had the front end off. You'd definatly need a 4" cowl hood to have an intake elbow that will work good.

 

Found one guys that fits stock hood. Remember this is going on a F/I car and I think the FAST has problems with a lot of boost if I am not mistaken.



I am going to get all parts polished to a chrome finish. This along with the polished D1SC and polished Nasty valve covers it should look good. I will test all intakes (LS6,LS2,Vic Jr) as I have all of them.

I will let you guys know after I get back home.

 

If someone wants to give a FAST to test on I am sure I can find a way to test the limits of it.

 

Tony and all,
Actually this is a LS7 with L92 heads which we dynoed and are now fabbing this up to try. It is a "prototype" GM (Wegner) carb manifold for the 6.2s. We are going to drill out the injector bosses obviously and plumb it up for injectors. It will fit under hood and mount approximately where stock 90mm fits::





Bruce

 

Good luck See5.....

I will follow your progress.....you see what Im saying though about the front cylinders with that design. There is no short turn to speak of or anything to help it negotiate the 180' change in direction. Not to mention air backing up into the back of the elbow when the inertia (air speed) gets high enough. Think of air like a fluid and its a little easier to see where I'm coming from.

Its just not an "ideal" arrangement but everything is worth a shot nonetheless.

Tony

 

the front radius of the bend on that being flat is going to disrupt the airflow some.
If you'll see the front radius of mine actually lifts up an inch, still not "perfect" but a small ramp in front of it hidden inside the tube makes the air fallow the top wall rather than the bottom which would ram it into the back.

 

Do you guys know of a 4 or 5" cowl hood that would clear a elbow? I'm needing to run a 90 turning towards the passengers side of the engine bay.

 

Looking at this buildup arrangement, would it not maybe make sense to to to a full sheetmetal intake?

If not, how about opening up the front of the carb style intake and making the "plenum" go through the existing front wall? Sure the 1&2 runners would get shortened up a bit, but they'd still be about the same length as the runners in the middle of the manifold?

 

With all of the twists and turns it looks like the air flow would be worse than any of the stock manifolds.

Bill