Ive used LOTS of different HOLLEY,EDELBROCK and DEMON carbs ,DEMON carbs are generally (NOT ALWAYS) better finished and have fewer problems than a similar holley carb, but then I generally buy the RACE DEMONS not the cheaper versions, EACH HAS its place, on the typical dual quad street set-up the edelbrock carbs can give excellent results, and Ive used dozens of holleys, even a few Q-jet setups, while IM not a big fan of ANY spread bore carb they all work, and can be tuned to give good results, but given a choice ID suggest sticking with the DEMON, or EDELBROCK carbs, in most application, with the HOLLEY carbs generally as a good second choice, but ID avoid the Q-jets personally. now that being said, Ive used and installed far more HOLLEY'S simply due to the difference in cost and ease of tuning
http://www.jegs.com/webapp/wcs/stor...tryId=285202&storeId=10001&ddkey=OrderItemAdd
http://www.jegs.com/i/Barry+Grant/132/2423010GC/10002/-1#
http://www.carcraft.com/techarticles/cc ... index.html
http://www.jegs.com/i/Barry+Grant/132/9728020DR/10002/-1
good carbs are expensive but a the race demons in the 825cfm - 1100cfm size are very easy to tune correctly
HOLLEY and DEMON carbs are generally much easier to tune, trouble shoot and adjust than most of the others, the demon carbs have a small advantage in that they offer more adjustments and finer metering, now that's a two edge sword, if your a klutz it means your options allow more areas to screw up, but once you've got the basics down , the HOLLEY and DEMON carbs are generally much easier to tune correctly REMEMBER WERE TALKING A STREET STRIP APPLICATION HERE
let me say this, if you can follow directions and read plugs and do basic carb adjustments the HOLLEY and DEMON carbs make tuning the engine correctly far easier than something like a carter, quadrajet or edelbrock carb that, has less flexibility ID ALSO POINT OUT
that many "carb" problems are really related too or caused by ignition or cam selection or intake manifold selection choices, or matching those parts to the wrong compression ratio, rear gearing, or stall speed
its hardly the carbs fault if you select a great holley or demon carb in the 700cfm-850 range and stick it on an engine combo thats basically a collection of mismatched components and then find its difficult to get it running correctly
as an example,
I had a neighbor who constantly played with his classic mustang 390 ford engine, claiming his carb was nearly un-adjustable, I quickly found the problem, his fuel pressure was 3 psi , his fuel filter was mostly clogged,and his ignition didn,t advance smoothly, as the rpms increased yet he cussed that carb for months, be fore calling me over to look at his car after swearing to everyone who could hear , his carb sucked!
http://www.jegs.com/webapp/wcs/stor...tryId=285202&storeId=10001&ddkey=OrderItemAdd
http://www.jegs.com/i/Barry+Grant/132/2423010GC/10002/-1#
http://www.carcraft.com/techarticles/cc ... index.html
http://www.jegs.com/i/Barry+Grant/132/9728020DR/10002/-1
good carbs are expensive but a the race demons in the 825cfm - 1100cfm size are very easy to tune correctly
HOLLEY and DEMON carbs are generally much easier to tune, trouble shoot and adjust than most of the others, the demon carbs have a small advantage in that they offer more adjustments and finer metering, now that's a two edge sword, if your a klutz it means your options allow more areas to screw up, but once you've got the basics down , the HOLLEY and DEMON carbs are generally much easier to tune correctly REMEMBER WERE TALKING A STREET STRIP APPLICATION HERE
let me say this, if you can follow directions and read plugs and do basic carb adjustments the HOLLEY and DEMON carbs make tuning the engine correctly far easier than something like a carter, quadrajet or edelbrock carb that, has less flexibility ID ALSO POINT OUT
that many "carb" problems are really related too or caused by ignition or cam selection or intake manifold selection choices, or matching those parts to the wrong compression ratio, rear gearing, or stall speed
its hardly the carbs fault if you select a great holley or demon carb in the 700cfm-850 range and stick it on an engine combo thats basically a collection of mismatched components and then find its difficult to get it running correctly
as an example,
I had a neighbor who constantly played with his classic mustang 390 ford engine, claiming his carb was nearly un-adjustable, I quickly found the problem, his fuel pressure was 3 psi , his fuel filter was mostly clogged,and his ignition didn,t advance smoothly, as the rpms increased yet he cussed that carb for months, be fore calling me over to look at his car after swearing to everyone who could hear , his carb sucked!