What set up are you running it with? I also have a 150 shot I will be running though it.Quickfuel FTW
one of the best carbs i have ever had the chance to have on my car to be honest.
it was night and day from any other i had on it ever.
When you say out of the hole do you mean @ the drags on slicks,Or just driving normal from a stop? What are you running for a front shooter? You may also be lean on jets, what are you running?Guy's, need some advise...The current holley I have is a 650 DP I re jetted, different shooters, pink cam etc and I still can't get rid of the stummble out of the hole. I keep hearing DEMON is the way to go? Your thoughts? I have a 306 e303, windsor jr. heads ported polished, scorpion 1.6 RPM manifold. JE 10.1 pistons. 373 gear
Both on the slicks and driving on the streets. I have #28 and last night I tryed a 31..No difference, it bogged even more. In other words, sitting and from a idle to the floor, major hesitation the it kicks in? I re jetted ect...I keep hearing Holley's are crap?When you say out of the hole do you mean @ the drags on slicks,Or just driving normal from a stop? What are you running for a front shooter? You may also be lean on jets, what are you running?
Jetting is 71 Primary, 67 secondary, 28 shooters, pink cam on #2 setting..Air flow I did not touch yet. ThanksI have had both Holley and Demon and I can assure you if you are having problems tuning the Holley the Demons are harder to tune and have more driveability issues than a properly sized Holley. Your issue sounds like a tuning issue more than anything. Post up what jets you are running in the primary and secondary, where your mixture screws are at in # of turns from seated and people can start to point you in the right direction. Good luck with your project.
BTW I have run both 575 and 650 Demon DP carbs and had a much harder time dialing them in than either of my Holleys for driveabilty, idle quality and general street manners.
If you do go with a Demon the 575 is all the larger one you will need. Due to Demons flow rating system which is different than Holleys the 575 is very comparable flow wise with a Holley 650 which is the proper size for your application unless you are turning lots of RPM or have High compression (11:1+)
I will check all of what you are recommending tonight and let you know the results...I appreciate your advise.I would recommend that you change your jetting for a 650 DP to 68 Primary and 74 Secondary. Also the mixture screws on the primary idle setting should be around 1 turn usually less to get the idle lean enough. This should get you in the ball park and you can tune from there. 28 squirters with pink cams front and rear should be fine. May even want to put them back on #1 hole and try the cams.
Also were are the throttle blades have you already set those properly? Hope this helps good luck.
agreed! sounds like the tuner and not the carb.I think you would greatly benefit from finding a local carb-guy and having it dialed into your setup.
larger cc boosters may help off the line, but I think your best bet is to find an expert...
better to spend the money on experience than buy a new carb that may have similar tunning issues.
my $.02
good luck!
Your $.02 is totally worth it! I was told the same thing by a good buddy. My buddy who owns www.mpgracingengines.com has a speed Demon 650 for 440 bucks, but I have herd now from you too I should get it the Holley dialed in by a pro.I think you would greatly benefit from finding a local carb-guy and having it dialed into your setup.
larger cc boosters may help off the line, but I think your best bet is to find an expert...
better to spend the money on experience than buy a new carb that may have similar tunning issues.
my $.02
good luck!
^^ thisI think you would greatly benefit from finding a local carb-guy and having it dialed into your setup.
larger cc boosters may help off the line, but I think your best bet is to find an expert...
better to spend the money on experience than buy a new carb that may have similar tunning issues.
my $.02
good luck!
That good your selling it already? Why?Got an almost New 750cfm Mighty Demon carb for you =$400.00
What a great looking build!s28.photobucket.com/albums/c244/racerxmd/?albumsview=slideshowI no longer need it. I have since up-graded to a 351 Windsor Stroked to 427,and I am using a Pro-Systems Carb. The Mighty Demon runs Great on 5.0L and 347s. You will Not be dissapointed!! I was Very Happy with it on my small block. Cann't beat the Price! Pics are in my photo bucket album
I knows the feeling...Take your time with the wiring,,,It will save you in the long run.Thanks! I am going to start on my wiring project tomorrow. I will be rewiring the Whole Car. I removed the dash and dash hull the other day. Plus,I removed the A/C heating system. I am still looking for a NON A/C Heater Box,if you know anyone that is looking to sell one. Thanks!
