72 Vette - base 350 - automatic tranny

Which Edelbrock Performer Carb? 140_ ?

600 cfm or 750 cfm ???

Electric choke ?

I love my original Q-jet but am tired of working on it - :o

Thanks :thumbsup:

Just call them. Their tech support is really helpful.

Neither. Get a holley 3310. What intake do you have? You probably want a direct bolt on so I would get another Q-jet. Not many people like Edel's on here.

You said you love your Q-jet but are tired of working on it. Have you thought about getting it rebuilt?

Patrick gives a good point or two (in spite of missing the ton of people here who like ede's!)

Thing 1 of course is your manifold is made for a q-jet. Nothing else will bolt on.
So you get a new good q-jet, or replace the manifold. Manifolds can be tough on vette's, hood clearance is limited.

A performer manifold and 1406 ede would work well and clear the hood.

'Course, you'll have to re-engineer your fuel lines, throttle cable, kickdown linkage...

What was the name of that company that builds the killer q-jets?

For a Q-Jet I would say http://www.cliffshighperformance.com/ Cliff wrote the book on Q-Jets.


TTFN
Mat

Fred I'm more of a Holley fan, but I bought a 68SS that had a 12.5:1 355 and M21 in it a few years ago, (car in my User profile). It had the Edel 1411 750 with electric choke. The motor had a General Kinetics .510 300 hydraulic cam and it was really responsive with this carb on it. I was very impressed with the Edelbrock. I only drove it 4 months with that combo in it, this was way too much compression for a street car, but the carb was excellent. Very crisp throttle, no bogs, just no complaints. I'll probably consider another one in the future.

Dave,

You ever run a 750 or an 800 Q-Jet on onna your short-stroke high rpm little monsters?

I used my OEM 350SS's Q-Jet after "tweeking" the top rear butterfly's for tip-in and intake on my old junk301 fine by me back then only b/c I didn't know better and had less money.

He, He!!

I ended up w/ a big Autolite 4-barrel off my Buddy's '58, 430" MEL engined Merc and was going to use it until I realized it wasn't a Holley! Sucker was as long as a 3310-1!!

pdq67

It's pretty easy, really. 600 or 750 Edelbrock ? 600 CFM for a 350, unless it's a quadrajet.
Need a new intake too, unless it's a quadrajet. Simply put, get a Quadrajet.

It's pretty easy, really. 600 or 750 Edelbrock ? 600 CFM for a 350, unless it's a quadrajet.
Need a new intake too, unless it's a quadrajet. Simply put, get a Quadrajet.

Edelbrock makes an Four-hole, Square-bore to Spread-bore Adapter. But I'm not sure about hood clearance, and if you'd be better with a new intake manifold as well. That's why I suggested a call to their tech guys

Purchase the Holley replacement spread bore for your Q-Jet!.....I believe it's a list #6210

I would stick with a 'new' rebuilt Quadrajet. It would be easiest to install and the cheapest route to take. If you were really wanting to get rid of the Quadrajet, I would suggest an Edlebrock Performer intake and a Holley 670 Street Avenger carb but you will need to change the fuel supply line. I would have suggested the Performer RPM but I don't know if you would have clearance issues or not. I am also another person that just have not been very impressed with the Edlebrock carbs. They always seem to run rich no matter what I try plus, after setting for a few days, it seems to take a long time cranking before starting.

Paul I've always run Holleys on the short stroke stuff. My brother ran one of his 302s with dual Predators but it ran best with a single annular 830 Holley. My quadrajet experience is limited to mid 70s 350 Camaros including a couple of L82s in Z cars. I think the quadrajet might work good on a street short stroke if you got it set up right. I haven't done enough with them to know how to set them up, but I know some guys have a lot of sucess with them that understand those carbs.

Thanks Dave,

I'm talking my old junk301 above 7,500 rpm a schosh w/ good points until they bounced and through my 350's cast-iron exhaust manifolds w/ my 2" dumps uncorked!

pdq67

If you get the Q-Jet right, you will NEVER want to switch to an Edelbrock, or any other carb for that matter. I ran Edelbrock's, but once I switched to the Q-Jet, I kick myself everyday that I didn't do it sooner. You cannot beat the MPG and the power. My Q-Jet runs like fuel injection. The power is FANTASTIC!!!. It allows me to pull harder and further into the RPM range without power loss. Please do not remove the Q-Jet. Take some time to make the necessary circuit modifications. You will be glad you did.

What issues are you having with the Q-Jet? I have had some good luck tuning mine. Mat Klemp from TC is also good at this. There are 2 books you should think about getting. 1. "How To Rebuild and Modify Rochester Quadrajets", by Cliff Ruggles and 2. "Rochester Carburetors", by Doug Roe. The 2nd book is more about all brands of Rochesters where the 1st book is specific to the Q-Jet. Both are great books and have great info in them on how to get your Q-Jet running like FI. I will never switch back. Tell me what exactly you are experiencing? The Q-Jet is the BEST carb built for the street and IMO, one of the best carbs built, period.

Edelbrock makes an Four-hole, Square-bore to Spread-bore Adapter. But I'm not sure about hood clearance, and if you'd be better with a new intake manifold as well. That's why I suggested a call to their tech guys

I don't want to kill you here, but a spread bore to square bore adapter is one of the worst things you can install and still expect the engine to perform. Either keep the current manifold and Q-Jet, THIS IS THE BEST OPTION, or get a new manifold and square bore carb. The money it will take to get the manifold and carb will far outweigh the cost to get the Q-Jet running correctly, believe me. The Q-Jet can't be beat.

I run a spreadbore Holley 650 vacuum secondary and love it. It's a Q-jet replacement, with the single feed fuel line on the front side just like a Q-jet. I had a professionally tuned Q-jet before, and this Holley just outperforms it in every way.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=HLY%2D0%2D80555C&N=700+4294925239+4294839063+4294919007+400178+4294 908216+4294840140+4294901827+115&autoview=sku