What carb to use

[cudablue]

Hey gang,
I'm back. I'll try to get the specs tomorrow.

Here is what I'm looking at right now.
http://www.summitracing.com/parts/HLY-0-76650BL/

I appreciate the input.
rick

[rumblefish360]

nice lookin carb. do they come in a 700 cfm size?

[ramenth]

Originally Posted by rumblefish360

nice lookin carb. do they come in a 700 cfm size?

X2. Do they come in 700?

[Oldschool]

I have always used the oldschool way of figuring out carb size. It works really well, at least it does for me. This little rule of thumb is for stock or mild builds. Radical builds will easily handle more.

Take the cubic inches of the engine and double it. In your case, it is 340.

340 X 2 = 680 cfm

Example, I am running 528 CI in a medium build Hemi. I run two HP Holley 750's on a crossram. 727, 3800 converter, 410 rear, 31" tall tires, 3500 lbs and it handles it just fine. It actually lays down a better 1/4 mile number with 2- 1050 dominators, but I never run them on the street.

Keep in mind this for stock to mild. If you are pushing 375 hp then a 700 or 750 will work great. I am a fan of the Holley HP series. If you don't need a choke very often where you live, they are the ticket. Just my old 0.02

[ramenth]

Well, Oldschool, that's definately and old school formula and one which works. I agree with you, though, that 700 would probably fit the bill for this, but having the cam and head specs would be nice, too.

I will kind of disagree with you on the choke. If you live in very warm climes where a pat of the throttle will introduce enough fuel to fire, then yeah, but a properly set choke will also help cut down on cylinder wash.

[cudablue]

Hey gang,
I decided on the Holley Model 4150 Ultra Carburetor. I'll keep you posted once it is fired up. Hopefully in the next few weeks. On the testing unit anyway. IT will be a while before it goes in the car.
Thanks for the advice!!
rick