clubber

Guys I'm thinking that the edelbrock AFB series carbs might work OK for our (my) intake needs? I've seen a little on them but not very much; so has anyone made one work yet? Has anyone FAILED to make one work? Any experiences on them sure would help. If you look, you can get the 500 cfm model and a jet kit for just over $300.
http://www.summitracing.com/parts/EDL-1404/

BGH

Years ago I ran a manual chock edelbrock 600 on a
racing beat intake with a parts store spacer. Had to
do some creative clearancing for the throttle not to
hit the water pump outlet. It had good reliable power
and GREAT gas milage. A well tuned nikki would
give jumt as much power. I installed a Racing Beat
Holley to the intake later and it was MUCH more responsive.
Then I had a side draft mikuni on the motor later and liked
that the best. Bottom line is I am sure you can get them to
work fine if you know what you are doing. Holley and Webber
are more tunable IMHO. But edelbrock is a nice carb.

84stock

iTrader: (5)

I have used almost any 4 barrel you can think of. hard to beat the reliability and daily driving attributes of an edelbrock with an electric choke. Totally set it and forget it!

clubber

I was planning for a manual choke. Should I just wire up an E choke? I think that I'm gonna give one of these carbs a try. Also while I haven't bought anything yet, Should I go 500 or 600 cfm's? If you go just by the math, the 500 should be way adequate for a 12A street port.

Verneuil

the choke is one single wire. Which is switch 12V. All it needs

84stock

iTrader: (5)

500 cfm, thunder series

clubber

Sweet, thanks.

Rogue_Wulff

I have a 600 CFM manual choke edelbrock on my stock 6 port 13B in my SE. It works rather great, and tuning has been as simple as turning the idle mixture and idle speed screws. Otherwise, it is still at factory specs, though I did have to lower the floats just a bit. It was shipped with the floats set just a hair higher than the spec calls for. It also shipped with a metering rod that was not installed correctly, but I fixed that easily when I took off the top to adjust the floats.
I have tried a holley 600, and was underwhelmed. The secondaries were too slow to fully open, and it never really seemed to run as well during cruise mode.
The edelbrock went back on, and I have been very pleased with the way it runs.
Gratuitus pic, just cause I can:

PercentSevenC

I tried a 600 CFM Edelbrock Performer Series and a 600 CFM Holley back-to-back when I was running a Camden blower. Only thing I didn't like about the Edelbrock is that the secondaries didn't open fast enough. I bet an Edelbrock Thunder Series, with their adjustable secondaries, would beat the Holley in every respect. And get the electric choke if it'll clear the water pump, because it's very nice once you get it adjusted.

Both carbs had severe issues with cornering and stopping, though. Which is why I'm a Weber fan.

clubber

Ya well. the cornering thing matters. It's on an autocross car so this could be a deal breaker for me. I'd do the webber but DAM that's expensive. I ultimately plan on fuel injection but that's too much work to go through just to get this thing running initially.

84stock

iTrader: (5)

The edelbrock is more forgiving in corners than a holley as the jets are in the floor of the fuel bowl

Rogue_Wulff

Not sure about autocross with an edelbrock. Last time I took that car to an autocross, it was suffering from ignition issues. Kinda hard to determine how the carb works, when the ignition system is giving you greif. Turned out, the GM HEI mod was wired wrong by the former owner.
However, about a month ago, I took it to a rallycross and the edelbrock seemed to work fine. Granted, you can't generate quite the same cornering forces on dirt/gravel that can be achieved on asphalt/concrete. But, I would think the extra bumpiness of the rallycross would have added more chance for issues. Just for the record, I took the holley carb with me, just in case..... Never felt the need to swap it though.

BGH

Holley with center hung float bowls.

clubber

Internet "wisdom" says center floats aren't much better. No personal experience though.

cfamilyfix

iTrader: (15)

What do you guys do about oil metering when running an edelbrock or demon or similar??

84stock

iTrader: (5)

2 choices, tap them into the float bowl and fabricate the omp mechanism, the RB kit does this already, or premix which is better anyway.

cfamilyfix

iTrader: (15)

By premix, what exactly is involved (oil in gas before it gets to the carb?) Sorry if it is a abit of a nooblet question.

trochoid

iTrader: (6)

Yep TC3 rated 2 stroke oil in fuel tank. 1 oz/gal fuel.

cfamilyfix

iTrader: (15)

Is there any ill effects...smoking etc. Then you just block off the metering pump hole in the front cover? Thanks for the info btw...

84stock

iTrader: (5)

Just tee or block the hosed from the opm and leave it alone. 2 stroke burns cleaner than motor oil so this is an improvement over stock at the inconvenience of adding oil to the tank at every fill.

The benefit though, the lubrication is always there! If your omp fails, who knows, there is no electronic flow indicator......You'll never find out until you notice after a few tanks of fuel that your oil level hasn't changed in the engine.

By then, it's a little late.

PercentSevenC

Premixing is a PITA but doesn't really have any other side-effects except for a cleaner engine. I hear it can also clog cats if you still have them.