Carb selection for mild 383 4-spd with 3:54 gears

[Dave Pratt]

I've just rebuilt my 383 in my 70RR and am looking at getting a new carb.The engine is running a Comp Cams hydraulic flat tappet XE274H...488/491 valve lift.It's an air grabber car so I went with the Edelbrock DP4b intake.It's bored .030 over,flat-top pistons and stock HP exhaust manifolds through an entire 2 1/2 mandrel bent system.It's a 4-spd with 3:54 gears and I was thinking along the lines of a Holley 750 double pumper or a Quick Fuel HR series 750...anyone with any experience along these lines?
I'm a novice at this so if I missed something take that in mind...I was figuring a 750 DP would be good.I'm planning on TTI headers down the road...any help would be great,thanks

Dave

 

[lewtot184]

i think a 750 holley type carb is perfect. i used to run a 780 vacuum holley on a dp4b back in the day on my roadrunner.

 

[coloradodave]

Dave, it depends on your intended usage. Is gas mileage a concern? If so, consider the vacuum secondary models from Holley or the 750 Edelbrock carburetors. Either is a good choice. The double pumper Holleys are great for performance but will really drop your mpg. Have fun. Sounds like a nice build.

 

[WileE]

Edelbrock Performer 750, or Holley Street Avenger 770.

 

[Meep-Meep]

For a street car stay on the small side. 700 CFM max and use a STREET carb as opposed to a regular double pumper. You want the street calibrated metering block. A 650 Eddy will probably work perfectly but will cost you some upper RPM HP, and how much time do you spend at 6000 RPM anyway?

 

[Dave Pratt]

Guys thanks for the input...the car might see a night or two at the local track for the street legal drags but other than that it's on the street.I'm figuring vac sec. is the way to go but find a carb that's tunable.I was looking at the Quick Fuel line...pretty nice stuff.

Dave

 

[Dave Pratt]

I ended up getting an excellent deal on a Holley 770 Street Avenger,billet metering blocks and all.I couldn't pass up the deal...

 

[kiwigtx]

I'm running the Quick Fuel 780 vac-sec carb. Runs great and is easy to tune...has nice features like see-through lens for the fuel bowl levels, easy to pull apart and change jets & air-bleeds etc. I went off Holley after a few bad experiences. Link below is the one I use;

http://www.quickfueltechnology.com/carburetors-ss-series/street-carburetor-780-cfm-vs.html

 

[Dave Pratt]

Thanks for all the input guys...I was going to go the Quick Fuel route until I came across such a great deal on this 770 but if it doesn't go the way I like I'm going QF...

Dave