Help me pick out an intake manifold and carb set up....

My current set up is an Edelbrock dual 4 barrel with two small air cleaners - see sig for pics. Its sucking up gas and bogging down on the low end.

The motor is an Edelbrock 350 with AC and a pretty wild cam which I have no idea what it is.

The AC kills the motor on the street but on the freeway it runs well. I was told a new Stall converter would fix that. Idle is arounf 750 in Drive but climbs to 1000-12000 in park and idle.

I would like to get a single barrel setup and need ideas for the best combination of gas mileage, streetability and power. I have fairly elemetary knowledge so excuse my ignorance.

Thanks for all your advice.

Ooops pics - here>>> http://f2.pg.photos.yahoo.com/stampinartist@sbcglobal.net

well i find that my holley street avenger which is a 670 vac secondary is pretty good on the gas, besides having a big cam isn't helping u very much... a performer RPMs are great, but depending on the direction of heads u go for. vortec in take is a nother good way... also look in to demon carbs, there awesome, a bit of a bitch to tune sometimes then a holley, but they have the Berry Grant design, which seems to be the crazy of late.

With a setup like that you want to go single carb????? :confused: That is a very nice setup you have but if your looking for fuel economy you will have to ditch the cam as well.. if it bogs down low it could be a number of things I'll give you a list of things to check...

1. Check your initial timing and total @2500 rpm's. without knowing the specs of the cam I could not tell you what is best.
2. What is your vacuum @idle and in drive?
3. What springs are in the carbs?
4. What size carbs are in that setup?
5. check for vacuum leaks.
6. If it's a radical cam you might have to switch to a single pplane intake and 750 carb which will still do nothing for fuel economy.

give me the specs of the cam and heads and the rest of the engine and then I can tell you what settings you can go with on your setup to get better performance out of it and you even might gain better economy!!

Thanks for the response - I will get back to you on those figures. If it was possible to tune this set up for reasonable gas mileage and horsepower, I would keep it. I guess that is a good place to start. I have a lot to learn.

Originally posted by StorminNorm
Thanks for the response - I will get back to you on those figures. If it was possible to tune this set up for reasonable gas mileage and horsepower, I would keep it. I guess that is a good place to start. I have a lot to learn.

It is possible to get good performance out of that setup. I would like to see you keep it because it is atrick piece and very easy on the eyes. I like seeing older muscle with dual carb setups!! I try to make sure they stay like that:bow:

If you want reasonable gas mileage and performance then I highly recommend going with the Edelbrock Performer intake (P/N 2101 or 21011 if you want the polished version) and Edelbrock Performer Q-jet (P/N 1901).

The performer has a powerband from idel to 5500 rpms. I used it on my 68 RS daily driver with a mild 327 and I loved it.

If you want a little more umph, then go with the Performer Air-Gap (P/N 2601). However you'll have to go with Edelbrock's electric choke version Q-jet (P/N 1904) rather than the divorced choke version listed above because the Air-gap doesn't have provisions for the choke coil.

For a performance and mileage standpoint, a Quadrajet is the best solution. The small primaries give you great mileage around town and when you need the power, a little WOT will open those huge secondaries right up.

I'm going with the 1901 Q-jet on my 67, however I'm using the stock L30 intake. (I wanted to keep my pristine "Chevrolet" script valve covers so I needed the oil fill tube.) :D

Originally posted by jg95z28
If you want reasonable gas mileage and performance then I highly recommend going with the Edelbrock Performer intake (P/N 2101 or 21011 if you want the polished version) and Edelbrock Performer Q-jet (P/N 1901).

The performer has a powerband from idel to 5500 rpms. I used it on my 68 RS daily driver with a mild 327 and I loved it.

If you want a little more umph, then go with the Performer Air-Gap (P/N 2601). However you'll have to go with Edelbrock's electric choke version Q-jet (P/N 1904) rather than the divorced choke version listed above because the Air-gap doesn't have provisions for the choke coil.

For a performance and mileage standpoint, a Quadrajet is the best solution. The small primaries give you great mileage around town and when you need the power, a little WOT will open those huge secondaries right up.

I'm going with the 1901 Q-jet on my 67, however I'm using the stock L30 intake. (I wanted to keep my pristine "Chevrolet" script valve covers so I needed the oil fill tube.) :D

remember; he said it has a radical cam in it and the dual plane manifold will cause more harm then good with a high lift cam. even the performer prm will make it run like **** i tried it and it made me slower and fuel up too fast.

Originally posted by grygst76
remember; he said it has a radical cam in it and the dual plane manifold will cause more harm then good with a high lift cam. even the performer prm will make it run like **** i tried it and it made me slower and fuel up too fast. Damn. You're right of course. I missed the whole part about the radical cam.

In that case, maybe the Torker and an EPS 800 carb? Unless he wants to swap in a milder cam. :D

You'll probably have to go with a less agressive cam to get better milage. A wild cam will still suck gas with a single carb too. Then if you have steep gears they'll affect your milage also. Does your Edelbrock engine have the cam that came with it or was it changed out?

As for an induction combo, I like Weiand Team G's for single planes (cheaper than Edelbrock's equivalents and works just as well) and the Weiand Stealth for a dual plane. Then if you get a Q-jet check out the JET Q-jets, once again...cheaper than Edelbrock. Check out summitracing.com for pricing.

OK - here is the skinny. I had the chance to reasess my situation. After letting some "experts" - a bunch of old hot rodders and some guys with major experience with these 350s, the consensus seems to be that the cam in my car is likely mild enough for a dual plane set up.

After some thinking, I am leaning towards the Edelbrock EPS for its idle to 5500 range and better low end torque and better gas mileage. Top it of with a a 600-750 carb and I think we have a winner for a street car here.

What do you think?

so if you want good gas mileage go with a performer intake and performer 600 electric choke carb you'll still have decent throttle response and retain gas mileage