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I am currently running a stock quadra-puke on my car and I want to up grade to a better carb for my new engine. I am running a 350sb-8 1/2 to 1 dishes-64 cc .194 heads-edlebrock performer manifold-headers-284/458 cam-auto tranny-323 gears in the rear. Which brand and size would be best. I have had good luck in the past with holley but I love the look of the edlebrock. What do you think everyone?
Just me personally, but I've found that the Edelbrock's will stay in tune better and longer on the street. But if I'm going drag racing, then it's going to be a Holley because of all it's tuneablity features. JMO
I think thats a great idea, the shinny works for me!:D "If it don't go chrome it" theory has always worked for me!!:D Seriously, your saying that with those gears and cam, I can go with a smaller carb. Thats a good thing with todays gas prices, I am going to look into a 600 cfm edlebrock, Thanks for the advice guys.
well first off, switching to a differant carb may not be an upgrade, a properly tued Q-jet can outperform & out MPG other carbs with your application.
However, if you insist on getting rid of the Q-jet, I think Id almost recomend a 570 Holley....it may be just a bit on the small size at the top end...so Id probably use a 600 Holley.
Firstoff, what car? Be careful because the Edelbrock with an air cleaner will not fit under the hood of many of the mid sixties muscle cars. Secondly, the Edelbrock is a square bore carb and your Quadrajet is a spreadbore. You will have to run an adapter to use the edelbrock on you manifold which will raise it up even more.
The air cleaner designs that MUST be used on an Edelbrock are the types that raise the air cleaner base above just slightly below the carb. This is done to clear the choke, linkage and fuel inlet fitting which is wider that the inside diameter of a 14" air filter. In other words the air cleaner will not fit around the carb because it is too wide. The air cleaner has to sit above the carb which causes interference problems with stock musclecar hoods.
I have an edelbrock and am very unhappy with it for several reasons:
1) for some reason if it sits for more than a week the damn float bowls empty out. I had to put a fuel line bulb from a boat in my line so I could manually pump fuel up to the carb when this happens before starting it. Otherwise I have to disconnect the line and pour fuel down in it to fill the stupid thing.
2) the bowls are TINY. The engine will run for about 10 seconds on the float bowls before sucking them dry.
My next carb will have two big fat holley style bowls on the sides, that's for sure.
actually, on his performer intake are both square & spreadbore patterns...either will fit.Quote:
Originally posted by Corvette64
Firstoff, what car? Be careful because the Edelbrock with an air cleaner will not fit under the hood of many of the mid sixties muscle cars. Secondly, the Edelbrock is a square bore carb and your Quadrajet is a spreadbore. You will have to run an adapter to use the edelbrock on you manifold which will raise it up even more.
The air cleaner designs that MUST be used on an Edelbrock are the types that raise the air cleaner base above just slightly below the carb. This is done to clear the choke, linkage and fuel inlet fitting which is wider that the inside diameter of a 14" air filter. In other words the air cleaner will not fit around the carb because it is too wide. The air cleaner has to sit above the carb which causes interference problems with stock musclecar hoods.
Also, you can use a drop base aircleaner now on Edelbrock carbs if you use either a banjo fitting, or there is a hardline available for it also that reroutes the fuel line
Not real sure what everyone else said but if I were you I would run a 600 or 650 first off. Then it all depends on the carb and what you want out of it. I have always heard and have tried both that Holley is more of a strip kind of carb. They are good carbs for better power. Need more tuning but good. Edelbrock are good for plain street motors and stay in tune well. Edelbrocks aren't good IMO for strip or major power, they seem to just be plain street carbs and better on gas milage. If I would have known this earlier before I bought my Edelbrock then I would have gotten a Holley. I am not too happy with power gains from the Edelbrock carb I have. Didn't add no power and actually my 2 barrell seemed to pick up much better and a more snappy throttle response.
Sounds like you need the Tune Up kit Edelbrock sells for their carbs, a bit of tinkering and they will work great. If you get the kit, it comes with a book plumb full of tuning tips and instructions.
Yeah I should do that. Because now that weather got cold the thing wont start. I have to sit there cranking on the 66 8 times... But I don't wanna take over the thread.
No, I have a manual chock.... Works just fine. Just hard to start. Not sure why.
Ok thanks Denny. I tried all sorts of ways like that. A few times it worked when I stomed it to the floor and then let off and put the choke out and it started in about 2 tries. I am going to go outside right now and try it. It's pouring rain out but I wanna try and get the thing half way in the garage and put a new started on it too that I have sitting in the garage because the one on it now is screwed up. That may be part of the reason. Anyways, back to brickmans post. And brickman, when you read this let me know how it went with the radiator number I gave you.
Thanks for the help guys and sorry to like jump in on your thread.
I'll gladly take all the quadra pukes you fools want to throw away.I seem to be able to make them just fine for me. If you really must waste money,use a500 cfm 2 bbl,with 73 jets,and a 70cc accelerater pump. You will get immediate throttle response,and more bottom end torque.
when it was 80 degrees out I had to give 2 full pumps before
starting it.
Around 60 it takes 3 pumps.
This weekend it was 50 at best and 3 pumps didn't start it on the first crank.
I gave it one more then and it fired up.
Denny, I tried what you said... Didn't work. I am not sure how I would adjust the choke. I have it where it opens up all the way basically. The choke opens just as much as it did with the old carb. It never did this before until it got cold....
Not True! I have both the banjo and a dropfuel line. I've found NO air cleaners that will clear the electric choke housing. If anyone knows of one I'd like to know what it is. Edelbrock tech support said I needed to put a scoop on the hood. Thats not a solution for me, thats a cop out.Quote:
Originally posted by stepside454
actually, on his performer intake are both square & spreadbore patterns...either will fit.
Also, you can use a drop base aircleaner now on Edelbrock carbs if you use either a banjo fitting, or there is a hardline available for it also that reroutes the fuel line
IMO the Holley style carbs are just superior. A Street Avenger carb 570 cfm or 670 cfm will more than likely run really well with the engine set-up above.
A more precise carb yet IMO would be a Barry Grant Road Demon 525 cfm or 625 cfm. This is very similar to the Street Avenger but uses billet metering blocks instead of the porous cast b locks that Holley uses.
Good Luck! Kitz
Yeah that Barry Grant carb looks nice. I am thinking of running one on the 350 I plan to put in my K10 soon. I hear they are real nice! I think they are a tad bit more money (I can't remember) but even if they are I am sure it's worth it.
i tried running a edelbrock 650 1406 electric choke on my 84 chevy pickup with a 350 and could not tune it in i would recommend a holley, which i know run which is also a 650 electric choke i might need to be tuned more but i like thier performance and i find holleys to be easier to tune
I've got a 750 speed demon on the 55. In my opinion, they are the best out there. I ran a 750 holley which worked good but if parked for more than 2 weeks, it would run like crap and I got tired of beating on it with a screwdriver handle. After that, ran a 750 edelbrock which was alot more kind after long periods of unuse but killed the power. Finally went to the speed demon and woke it up. Great throttle response, the fuel mileage actually went up slightly from the edelbrock, and works just as good if left parked for a long period of time. I love it. It works great, looks great.
The Elde looks better, and they now do make it in a spread bore, although I'm not sure if it's offer'd in all cfm ranges.
From the looks of it in cataloges the Speed Demon Jr looks sweet! I know brickman said a Holley or Edelbrock but still. I would check out the Speed Demon Jr.
Mine wasn't firing up well at first either and I determined that the choke was closing too much. The manual says there should be something like .040 between the front of the choke plate and the air horn.
I made a little mark on my choke knob inside the car so I know where it should be pulled to in order to get that clearance.
I used a piece of mig wire to estimate the clearance on the choke plate.
Thanks for the tip I will try it out.
try a predator
I have not even considered the demon and I can't really tell you why. I just got done reading up on them and they are a great looking carb and are highly praised. One thing is that they are a little more spendy than the elde or the holley. I think I will do some more research on them, may be they way to go.
Couldn't you use a spacer between carb and air cleaner to clear the linkage, I did.
Where can I research about the predator firebird 45331?
and they flow from 390 CFM- 930 CFM depending on engine need and RPM.Quote:
Originally posted by DennyW
:) The Predator is a pretty neat carb. $500.00 for it. Heres a quick link. I tried to open the manual site, but it's down now. I do have lots of info on it that I could dig out for you.
The 6000 PXI model I believe has the idle circuit already installed, otherwise, on this page, you can order it, and the kit.
http://www.performancedepot.com/prod...715&sku=410218
how do predators work with an overdrive tranny with a TV cable?
Man those are sweet. I have seen them before. The Barry Grant Road Demon Jr in 625 cfm is 289.95 so basicaly 290 bucks. That is fairly cheap for a BG carb. You can get a Edelbrock for 270 or so... But spend the extra 15-20 bucks on the BG and I think that will be the best.