Do I need A BLOWER CARB???

[Bobby Knight]

I have run 5 different blower motors ranging from 454 to 605 w/10-20 pounds of boost. I locked everyone of them out.I think the main reason is it eliminates a lot of fluctuationin the timing. Ever watch a timing light bounce around, I feel most of that is from advance mechanisms, not all of it, but most. Steve

[wfoflat]

Thank you guys for the help. Im going to lock out the timing at 28deg and start there.

[EMCAM]

I just bought a blower shop blower , the 250 and it is matched with a demon 1150cfm worked by bg . It ia going on a 502 they sell it matched . i think you need more carb then 950. this is just what i have been hearing from the experts.

[novaz]

I am running a Pro-Systems 4150 Holley 850 on a 6-71 equipped
350 performer rpm engine.
This carb is gorgeous ran and started first time straight out the box set straight up for my blower combo no Boost reference Patrick James gives outstanding customer service
I run my distrib locked out @38*
Good luck

[blownzoom440]

i noticed that most of you run just 1 carb on your blowers.i wondered why?
i always thaught the least resistance the better for drawing in air and to use 2 carbs.i use 2 stock 850 holleys with no PV'sbut for race only.TBS 8-71 setup for race gas.
thanks!

[wfoflat]

The blower im running is a small blower its only made to use one carb.

[blownzoom440]

i should have read more carefully!sorry!

[wfoflat]

I wish I had a big blower that needs dual carbs. For now this one will do!!

[BIGJOEDUCKSLAYER]

The power valve block off is a good mod to carb and very easy to do, The p/v lets more fuel into motor when you hammer down, w/blower there is never really a drop in vacum to allow p/v to open and give extra fuel, my blower car has 2 650 dps and always ran hot. Put block-off and went up 12 sizes on mains and car does not overheat in 95 degree heat.A boat is always under constant load, this does not vacum build under throttle plates=no power valve. Booster reference mods let power valve get vacum from under blower. pm me if you want more info. BIG JOE 800HP FROM SMALL BLOCK CHEVY STREET CAR

[wfoflat]

They sell power valve block off plates? On a 750 demon carb is there primary and secondary jets? Im guessing the ones to change would be the secondary?