Fuel Pressure

Alright I runn 8#'s of fuel presure what does every oneelse run for pressure

First Thread Hell ya

Going to need more info than that! :D

Carburated, fuel injected, supercharged, turbocharged, nitrous, single carb, dual carbs, split carbs.

Well now it is a stock Displacment 460, single carb, 850 demon, all motor, Slightly ported Dove-c and Torker intake

Way to go Larry on the first thread!!:D

I always try and keep mine down around 5-6 just to ensure no flooding. I think 8lbs might be getting close to blowing the needle off the seat.

Bill

Wow a 8# of fuel pressure is full race tech???? I run mine at 7.........

Crap..... I wanted to be first, at least I got the first one in the driveline forum :p

I rund mine about 8psi

I have -8 lines going to both sides of the carb

Crap..... I wanted to be first, at least I got the first one in the driveline forum :p

I rund mine about 8psi

I have -8 lines going to both sides of the carb

Gotcha by alittle

7.5

I run 8 also to a 1050 dominator

Thats cool Ive been running mine at 8#, for the better part of 4 months But always like to hear from yall,

anybody know if they make a Pro comp Fuel Pump thought it might wake my truck up:D

Thats cool Ive been running mine at 8#, for the better part of 4 months But always like to hear from yall,

anybody know if they make a Pro comp Fuel Pump thought it might wake my truck up:D

they make a regulator that cant be trusted. no joke.
one of my buddies had one. it would start at 7 and end up at 13 at the end of the pull
makes it tough to read your plugs

I also run 7.5 to 8 psi to the carb.

We recommend 7.5 as a baseline on our carbs. Some guys will run 8 but you have to be careful as it may start to affect the needle and seats.

I built Larry's engine and it's my carb. I set it up so it doesn't lean out above 5500, this carb seems to do this below 8 psi of pressure. It's done it on the other engines it was bolted on. Don't particularily like Demon carbs, it's all we had at the time!

I built Larry's engine and it's my carb. I set it up so it doesn't lean out above 5500, this carb seems to do this below 8 psi of pressure. It's done it on the other engines it was bolted on. Don't particularily like Demon carbs, it's all we had at the time! Carburetor may be on the large side for the motor depending on whether it is a down leg or an annular. Our down leg 850 will flow close to 1000 cfm and needs 500 cubic inches or larger to support it. If it is a down leg trying a 1 inch 4 hole spacer can help but it may need a smaller hsab in it to pull fuel at the higher rpm's.

Carburetor may be on the large side for the motor depending on whether it is a down leg or an annular. Our down leg 850 will flow close to 1000 cfm and needs 500 cubic inches or larger to support it. If it is a down leg trying a 1 inch 4 hole spacer can help but it may need a smaller hsab in it to pull fuel at the higher rpm's.
If an 850 flows 1000, what does a 1000 flow?
Gary

I know the carb is more than the engine needs but, like I said , it's all we had at the time. When you race with no money ( budget), this sometimes happens!

850 bg annular i run 10 psi at idle (523 bbf f-1 procharger)