would like new carb
Thread Starter
Melting Slicks
Joined: Jun 2004
Posts: 2,077
Likes: 0
From: westmoreland N.H.
would like new carb
i have a holley 80508s 750 cfm. it's a vacuum secondary,and i'm not to happy with it. the car has 500hp. ,and 500 ft.lb. good lumpy cam. idles @ 950. i was thinking of a holley 4150 street hp, or a mighty demon. both are 750 cfm. both are double pumpers. don't care about fuel milage. looking for better throtle response. what say you????
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Strong throttle response driving around on the street think
annular boosters, I have only had the old tech 4700 series
holley double pumpers not very adjustable antique 1960s/70s
boosters.
If I buy another carb it will have annular boosters, plus all the nice
4 corner idle, screw in air bleeds and some even have replaceable
idle restriction, imulsion tubes.
If you can live with an electric choke Quick Fuel has a double pumper street
750 with annular boosters, billet metering plates, changeable idle feed, changeable air bleeds, four corner idle, jet extensions. # QFT-SS-750AN ( AN = annular boosters ).
Believe holleys regular HP carb has an 830 cfm carb with annular boosters,
mighty demon with 850CFM annualar boosters.
How about a regular 830 HP annular booster holley if you want no choke air horn.
annular boosters, I have only had the old tech 4700 series
holley double pumpers not very adjustable antique 1960s/70s
boosters.
If I buy another carb it will have annular boosters, plus all the nice
4 corner idle, screw in air bleeds and some even have replaceable
idle restriction, imulsion tubes.
If you can live with an electric choke Quick Fuel has a double pumper street
750 with annular boosters, billet metering plates, changeable idle feed, changeable air bleeds, four corner idle, jet extensions. # QFT-SS-750AN ( AN = annular boosters ).
Believe holleys regular HP carb has an 830 cfm carb with annular boosters,
mighty demon with 850CFM annualar boosters.
How about a regular 830 HP annular booster holley if you want no choke air horn.
Last edited by Little Mouse; Jul 8, 2008 at 05:46 PM.
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
In general, throttle response can be improved by going to a smaller carb. Case in point is my Vette. Way back, we went from a 780 CFM Holley DP. throttle respose improved some. The went to a 650DP. Down low it would bark like an Outlaw Sprint Car, but ran out of ait at 5000RPM. Ended up with an 850. Bottom end was/is soggy, but it makes up for it in mid and top end power. I went thru this same exercise with a 350 in a Camaro-- It was real quick down low with the 650, soft with the 850, and felt really good with the 750.
