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I had a Pro systems 950 carb on my BBC , was the biggest pile of crap i ever owned. It went with the car when i sold it. Plus Patrick has no customer service skills. It took me a while to sort out all his mistakes on that carb.

With what you have there, i would be looking at AED carbs and around a 950 CFM. HO-Modified: AED 950 HO Modified

local engine builder had spun both intakes out of the box on the dyno on the same combos and has made more power with the Eddy intake every time. I have seen some stuff make more power on the dyno, yet the other combo got down the track better faster etc. Just goes to show you never know till...

Thats a pretty small cam for that motor. I have a bigger solid lifter flat tappet cam in my 426 low deck, 383 with 440 crank. The 850 will be more than enough for whats there. Get a carb with 4 corner idle, and make sure you run a power valve on the primary side. Your deal at 6000 rpm works out...

LMAO ok.

Start by replacing the power valves and then play with the idle mixture screws. They are supposed to have power valve blow out protection, but you never know. A 670 Is a pretty large carb for a 318 even with a big cam. I have one on my 355 sbc that makes 350 hp, and i feel its a bit too big. It...

I had aN HP 125, it lasted 300 miles then **** the bed. Holley told me to go F&*K myself as it was only 3 months out of warranty. Speed shop where i got it from said he had a dozen failed pumps needing to go back for replacement. The problem is the tolerances with the G rotor gear setup in the...

Carter makes a couple different electric pumps. they are quiet.

ProClassic - Hose - Russell Performance Products

At 525 hp you need a pump that will flow 52 GPH, then take into account gravity and resistance to flow. If you are at the track and the car is hooking hard, the fuel pump has to work that much harder to get the fuel to the carb. Most carbureted systems work at around 5.5-7.5 psi, so you need...

I have a big block duster, 426 lowdeck. Made 525 hp 552 tq. I am running stock tank, 3/8 pickup n the tank. # 6 An to Holley blue pump #6AN all the way up to the front of the car to the carb. No issues.

Never said i was running or needed to run an 8AN. You will need to buy an aftermarket fuel cell in order to run an 8an fitting. Or weld on a fuel drop box with 8 an fitting to the factory tank.

I have a 3/8 pickup in my stock tank and a 6AN line from the back up to the carb. I make 525 hp at the flywheel, and my car doesn't miss a beat. As long as your fuel pump can supply the volume of fuel needed to feed your motor, the 3/8 or 6an will be fine.

I made 550 hp with one on my 427 BBC. Great intake, if you have a cam at .245/.255 @.050 and a 4000 stall converter with 4.56 gears.

71 jets on the primary side with a power valve, and 83 jets on the secondary side with a plug, no power valve will be a good starting point.

I have one on my Duster. Mine came from cool carb technologies, i believe he was the original designer, patent one. My carb stays 30 degrees cooler than the intake, thats huge. Pretty simple really a composite fire retardant heat resistant material sandwiched between two plates - Home

If its getting hot and doing it, i an thinking you're getting vapour locked. Once the car cools down, and if you open the gas cap up and close it again will the car start? At what point does the car start again? Is there at least a 3/8 fuel line from the tank to the pump and up to the carb.

I will never own another one.

Oh also what colour pump cams are on the old carb and the new carb.

You are either getting too much fuel or not enough. I would make sure the jetting is the same as your old carb, and put the 28 squirters on the new carb start from there. try to mirror the old carb as much as possible.

I am pretty sure mine didnt have the vent tube when i bought it, i bought a new 16 gal fuel tank that came with 4 vent tubes which i have in play.

I got mine from Mancini for my duster. with 3/8. A-Body

The formula i got from Fram is. cubic inch times rpm divided by 20839. For me that was 426 x 6500 Div by 20839 = 132.8 " Sq. I have a 13x 10.5 x 1" flat filter on mine. And a hole cut in the hood 1 " larger to fit into the hood scoop.

I took it off the car and plugged the hole, then popped the little rubber plug off it and the gauge sort of zeroed itself. I will leave it off.

Thank you for the replies. I am going to remove the Engine compartment one and leave the cowl one in play.

I have a new Holley Blue pump and regulator which i installed today. Issue is 2 gauges installed , the one at the carb reads 1.5 lbs less than the one on the cowl? The cowl is 7.5 and the carb 6. Which is correct? Both are tapped at the same place.

This is a self regulated pump Kim, no external regulators. Besides this is a wide spread problem on this holley hp 125 pump. The dealer has over a dozen failed ones to send back. must of been a bad batch poor made in China quality control.

When you do the fuel calculation, i only require 44 Gallons per hour. So i would think a 110 pump would fit the bill. My engine builder's wife street car, has a 625 HP 355 SBC with crossram dual carbs, and its fed by an old holley Blue pump.

Yes the 4600 HP. I think the fuel pressure dropped to 3 psi with a 6an feed and line to the carb.

I ran that carter, it came off the car the same day. Could not keep up with the motor. Which was a shame, as Carter makes a great pump