Which Carb

[Bob M]

I am having my 72 400 engine rebuilt from top to bottom I want to use a Edelbrock carb on it and would like any suggestions which would be the best carb for this engine
Thanks
Bob M

[rumblefish360]

Bob, lay me on some info on the build.

Is it a ;

Stock build up
increased power?
How much projected? Wanted? Used for what? Cruiseing, street strip, drag race?

Your question is so general, I could actually recomend any carb.

[passing you]

Yeah really, how much do you plan on reving it?

[Bob M]

Well the fact that I am 70 and don't know that much about it and this is my first Mopar it will be almost stock except I told the company that is rebuilding the motor I would like what we used to call a 3/4 race cam in it the block and heads all checked out good will bring the heads up to like new with harden valves and seat for nonlead gas the crank will be polished and balanced bored 30 over new pistons,rings,bearings. I have been told that I should try to put in a anti-slip rearend but don't know about that just now.

[valiant64]

750 cfm @ most with the info given. A 600 cfm carb could work also if top end HP & higher rpm's aren't a priority.

[passing you]

Yep, ditto.

[dwc43]

I'd put the stock 850 CFM Carter Thermoquad back on it. Best millage, best throttle response and top end and you want have to adjust it every other day like a holley.

[cudabob496]

No lower than a 750!

[4HUNTIN]

I vote for 750 also.
I too remember cams called 3/4 or full race.
Have fun, Steve

[mopar_nocar]

See the post in this forum from Demonsizzler about thermoquads.

sb

[valiant64]

The Thermoquad is a good carb, but the O.P. stated he wants to use the Edelbrock carb. The 600 cfm carb will work well on a near stock 400. Some of the earlier non HP 440's even used carbs around this size. Great for cruising, but for more top end power the 750 would be better.

[rumblefish360]

I agree, a 750 will do fine. I did put a 750 Carter on my very stock '78 400 with only headers as additinonal HP equipment.

I shudder at the term, "3/4 race cam" because it is not just such a broad term, but a crazy wide open term that I could apply a hundred cams to. Seriously.

[Bob M]

Well with all the imput I will go with a 750 sorry for the lack of info on the cam but back in my day we didn't have all the choices you have today
Bob M

[rumblefish360]

LOL @ Bob M. Hey! No problem, your getting into a car and havin fun, don't look back and enjoy it! And your right, the amount of cam grinders and new choices is getting close to making me dizzy. LOL

[Rug_Trucker]

I would use the stock Thermoquad rebuilt by Demonsizzler. (if you have it) He is running a special deal on the rebuilds right now. Or buy a core rebuilt by him to your engine specs.

A Holley Street Dominator intake would be great on your engine. They pop up ever once in a while. They will take a spreadbore or squarebore carb without an adapter.

[mopar_nocar]

If you want the Eddy here is what I would do:

http://store.summitracing.com/partde...5&autoview=sku

Its a reman of the Eddy 750.

sb

[Rug_Trucker]

Originally Posted by mopar_nocar

If you want the Eddy here is what I would do:

http://store.summitracing.com/partde...5&autoview=sku

Its a reman of the Eddy 750.

sb

Correct me if I am wrong? Isn't the 750 Eddie a POS? I've heard nothing but bad things about them on every board. Seems like a "Thunder" series 800 would be a much more expensive but easier carb to tune.

[TK]

Everyone bitches about the Edelbrock carbs, but mine never have given me any grief. Never. I think to get a edelbrock to work, you just simply have to be smarter than the carb you are working on. They are a far sight less trouble than a holley, and in my opinion, a Thermosplat, but I hate thermosplats.

As far as the 750, it sounds like the perfect size, if you let me know what cam you are running, how heavy your car is, what gears, and what ignition, I can even get you close on jets/needles/springs to take some of the guesswork out of tuning it.

[Rug_Trucker]

I am a dyed in the wool Carter/Brock guy. I just heard specific bitching about the 750. Flat spots etc that cannot be tuned out.

I have quite a few AFBs and AVS's BBD's and 25+TQ's

Last 2 Holleys I had? I traded a 600 for a set of closed chamber 273 heads, the other 650 Qjet replacemnt I gave it away.

Only Holley at my house would be a 2280, or the original 1bbl that came on my 198slant.

[valiant64]

I've had good luck with Edelbrock's AFB carbs. I currently have the Ed reman 750 on my 440. And while it wasn't exactly "spot-on" out of the box as far as calibration (are they ever?), it didn't run all too bad. IF you did decide to go with the 600 cfm model, don't expect the engine to pull much past 5,300 rpm. That was my experience with one on a mild 383 anyways.

[BigBlockDude]

Its not the brand of carb, its the ability of the guy tuning it that makes it good or bad. I like them all, they all have there place.

[Crank]

I AGREE!! Go with the carb you can make run the best .Brand don't meen squat if you can't tune it .

[fox]

Originally Posted by BigBlockDude

Its not the brand of carb, its the ability of the guy tuning it that makes it good or bad. I like them all, they all have there place.

This is exactly right.
My 77 dodge van with the 400/2bbl really woke up with a hollet streetmaster manifold with a 650 holley spread bore carb.
All the chevy guys said I had to of swapped it for a 440!!!!
And it would get 15 mpg.
I reall miss that van.

[crisser]

The Edel. 750 should work fine out of the box.
They only give problems when you use them on a wild cam with low vacumn.
Then, you have to tune them.