please give me your carb recomendation

my setup-66ss

454 .std
speed pro-10.2-1 w/ moly rings
forged crank/7/16 dimple rods
lunati hyd. 232/239 @ .050 .549/.558
crane 1.72 roller rockers
990 rec. port 118cc
performer rpm intake
proform hei w/ 6al box
fluidamper

it will have a 400 turbo,3200 ati stall, 373 gears

i currently have a holley 4780 dp 800cfm-needs to be rebuilt. would this be a good carb w/ an automatic or should i be thinking about vacuum sec.

what hp/tq numbers should i expect.

thanks in advance,

mike

I'll guess 490-510 HP depending on tuning
IMHO the 800 cfm would be a great match.
Nice combo-should push right back into the seat and frighten passengers :D

thanks for the reply chris..

mike

That Holley 800 DP ought to be just about right for your combo.

If it is needing rebuilt, you might consider having it "custom modified" to your specific vehicle. I have sent 2 Holley's to JET Performance to have them "tuned" to my setup(an 850 and 950HP) with very good results. A Stage 3 carb would be nice. Had my 850 DP (4781) tuned by them about 6 or 7 years ago and it cost me about $300.

Another option (a little pricey though) would be to get a 950HP. Sweet carb. graemlins/thumbsup.gif

http://www.jetchip.com/

darren,

what was the turn around time from jett. this sounds like a good option but i'm itchin to drive this thing. the weather is finally starting to get better around here.

mike

Mike,

You will have to call them and ask for sure but if I remember correctly once they have it they turned it around in about a week(I think???). This does not include the shipping time.

I'm also not sure how close the price I stated is to the price now.

Originally posted by 71454Chevelle:
Mike,

You will have to call them and ask for sure but if I remember correctly once they have it they turned it around in about a week(I think???). This does not include the shipping time.

I'm also not sure how close the price I stated is to the price now. darren,

called jet today. $375.00 for the stage 3 setup. 2 week turn around. still kicking it around. demon prices are not much higher. a few of my buddys around here are running demons.might be the way i go. thanks for the advice though..

mike

Mike,

I think the nice thing about a custom carb compared to a mass produced one is it is tuned specifically to your car/engine. You bolt it on, set the idle and go. Alot of times with an "out of the box" carb you have to play with it awhile before you get it right.

Haven't had any experience with them (and don't know if its true in all cases) but I have heard that Demon carbs do not work very well out of the box. You have to "play" with them for awhile (tune them to your vehilce) before they will run properly.