should i go with a performer edelbrock 600cfm since im going with a performer intake? or should i still go holley? ive heard both edelbrock and holley both have pros and cons...what do you all think? can you give me reasons as well? im just trying to get all the facts before i do the swap since its gonna cost some big bones

 

I've never had an Edelbrock or Carter, but know several guys who do and have heard a bunch about them on this forum. I've learned the most about Holleys since getting this current one last August, although the first one I had was back in 1974 (long, sad story - won't go there).

The main attraction to the Performer seems to be the easy to tune without disassembly part. There are also reports of slightly better gas mileage when either is properly tuned with the Edelbrock (although the Holley faithful will probably disagree with that statement).

The Holley has been out there for a long time. It works. Parts for them are everywhere. They make good power. I personally think they're kind of ugly, but that doesn't translate to performance, so who cares?

For a few more bones, the Demons really seem to be the way to go. You didn't say what exactly you're building (other than something to beat GT's), but whatever the application, they seem to be much easier to make work than Holley's (although the design is based on the Holley), and make more power - this is where Jester jumps in and screams foul, but I know of one shop here that has dealt with Holleys for years that swears by Demons now, and a Bandimere racer who picked up a good second going from a Carter to Demon. Had I known then what I know now, I would have gone with the Demon instead of the Holley, but, that's life.

 

I also had a Holley 650 double pumper on my 68 Camaro with a 283 back in 1976-77. That thing would not work right no matter what we did! It just ran like you know what

I'll bet Jester could have made it run really sweet but we only met on this forum in the last year, so ... In fact, he might have only been a twinkle in his daddy's eye in 76.

I eventually ended up with a Carter 850 Thermoquad and that was one wicked carb!!!

Anyway, if you aren't worried about the last hundredth of a second, save some money and buy an Edelbrock 600 cfm. Man, they pull mucho hardo on the street, a lot harder than my old QJet!!!

 

im about to switch to carb on my 305 but before summers over i plan on putting in a goodwrench lo5 with a better cam then switching it over

 

comon guys i need more info

 

Out of the 5 or 6 holleys I've owned, only 1 ran right all the time and it happened to be too small for the motor I owned at the time. None of the carbs were dual feed, and 2 of them sprung leaks at the rear feed tube and stalled my car at stoplights. I went through power valves in all of them(thats suppose to be fixed now). I also used lots of fuel when compared to the quadrajets i've run. I've had both DPs and VSs and have tuned both. I never had the secondary quick change kit and taking the float bowls off to swap jets without pulling the carb always dumps fuel all over your manifold. Most of these problems seem to have been fixed on the new holleys. However, they lost me as a customer long ago.

I have run both an edelbrock carb and an afb. They seem to be completely identical. Personally I would buy a carter over edelbrock. They are the original! I ended up with an edelbrock because carters were back ordered at the time. My edelbrock ran like crap out of the box. I had to buy a $50 tuning kit and change the springs and richen the metering rods 1 1/2 steps. After that it runs perfect and I havent had a bit of trouble. However, it consistently gets 1 to 2 mpg less than a quadrajet.

Quadrajets seem to work really well. But you need to find one that the base plate isnt worn out(unless you get a bushing kit like I did). The non CCC ones seem to be real easy to tune, and they get great mileage. Plus they make great noise. I have installed a new edelbrock quad on a dodge 360. That thing ran great. If I had the money I'd put a new one on my bird.

Alot of this is opinion. And most of my holleys were old style carbs. The best one in fact was off of a 64 vette 327, and I found it in the garbage dump! It just wasnt big enough for my 402 BB. This is just my experience with these brands.

 

While I'm not very fast I do have a Holley and like it but I've never seen an Edelbrock or Carter on any of the fast cars around here so...

 

I ran a couple different carbs last summer on my 355 edelbrock 600, an edelbrock 750 and a Holley VS 750 all were new. the Edelbrocks are nice because you dont have to do much to them you can bolt them on and go, but if you have the know how and the time to tune a holley, I had to get some help tuning mine, but once it was tuned, It had much better throtle response, and just seemed to run better. IMO I would go with the holley.

 

i heard that edelbrocks are better carbs if you are going to be changing altitutes alot becuase they dont need as much constant tuning as holleys. does anyone know what a good carb would be for a 350 +.30 with a 278 cam with .467 lift. i have a holley 600 and i seems slugish untill about 4000 rpms.

 

I assume you have a vacuum secondary carb. Most likely, you have too weak of a spring in the secondary. This site http://www.holley.com/HiOctn/TechSer...fo/TI-223.html talks about the operation.

If you get their 20-13 spring assortment kit and 20-59 quick change kit, the instructions include words to the effect, "If you can feel the secondaries opening as RPMs increase, the secondaries are opening too soon." A common tuning mistake, and one of which I'm guilty.

Also see this link https://www.thirdgen.org/techbb2/sho...readid=110658, which describes a secondary housing that eliminates the need for the spring assortment and quick-change kit.

 

with this new set up with the springs will it hurt my gas mileage, im getting around 10 miles in the city and 14 on the mighway. i was hopeing to get a little better mileage on the highway. and not destroy my performance.

 

Doesn't affect mileage until you get on it. You have to open the secondaries, which requires a good bit of throttle and a healthy spin of RPMs.

 

would it be smart to go with smaller primaries jets and larger secondaries jets along with the springs since i do most of my driving on the highway.

 

Dude,
If I were you I'd go with a Rochester Quadra-jet, Keep your foot out of it and you get fantastic mileage, stuff your foot to the floor and it will go like a raped ape.
I have tried Holleys and Edelbrock carbs and have not been happy with either of them.
Like an earlier post suggested, Check the throttle plates for worn out shaft bores.
Just my 1 am .o2