Fuel system

[Dennis P Chapman]

Well Joe there you have it whats it going to be?

[Jim Craig]

whichever way you go make sure that you do not overfuel the system.......too much fuel can be worse for your engine's performance than being on the "short" side. You'd be very surprised at how little an amount of fuel your engine (in particular) requires to operate at its potential and how many guys are "killing" their system and ultimately performance with too much fuel..............

[Joe DeMarzo]

Lots of great information in addition to what systems work well. Thank you, any more insights will be accepted. I had a Performance Engineering system that worked great.
It had 10yrs of trouble free existance so I have no complaints.

Just wish I found it before the race but at least I know the problem. Lots of racers texted or private emailed me with their experience and some are still chasing a problem.

Thanks to everyone, see you at the races......

Jim great point, I agree totally. At one point I ran with 3 lbs of pressure (-84 under) and it ran better than when I had 18lbs. (could not get down the track)

Dennis going with the Barry Grant system, NOT...hahahaha

[40Coupe]

Originally Posted by Jim Craig

whichever way you go make sure that you do not overfuel the system.......too much fuel can be worse for your engine's performance than being on the "short" side. You'd be very surprised at how little an amount of fuel your engine (in particular) requires to operate at its potential and how many guys are "killing" their system and ultimately performance with too much fuel..............

^^^^^Like button.

[40Coupe]

Originally Posted by 1320racer

pick your posion. Holley, Mallory, Magnafuel, Product Engineering or Aeromotive, they all have a model that will get the job done. Nothing trick needed and I never subscribed to the thinking that you need a pump that can fill a pool and lines as big as fire hoses.

Ran a Mallory Comp 140 pump and dead headed regulator for many years feeding my 700+HP 468 from the stock/unsumped gas tank without issue.

^^^Like Button.

FYI, You could almost run a stock mechanical fuel pump with a Holley and get away with it. Dual inlet, and plenty of bowl volume.
Running a single inlet carb, with very limited bowl volume has unique needs that are different than a Holley.
If you never raced with a Qjet,AVS,THERMO Quad, ect, and or used a Data recorder, or a wide band O2, you may have a hard time believing this. Engine size, HP, car type will dictate what an engine likes. My brother has a 20 year old Comp 140 pump that came out of my car, in his 10.50 bracket car all day long without a problem. I have not experenced the same results.
Race on while we still have classes to race in.

Originally Posted by 1320racer

pick your posion. Holley, Mallory, Magnafuel, Product Engineering or Aeromotive, they all have a model that will get the job done. Nothing trick needed and I never subscribed to the thinking that you need a pump that can fill a pool and lines as big as fire hoses.

Ran a Mallory Comp 140 pump and dead headed regulator for many years feeding my 700+HP 468 from the stock/unsumped gas tank without issue.

[BobUnkefer]

Joe,
D/SA 396/350 68 Camaro.
Took off an old Mallory pump, regulator and lines, replaced entire system with Aeromotive.
A-2000 pump, along with their regulator and new lines, picked up a tenth.
Granted the other stuff was old, but still, a TENTH?
Best part was the assistance from Aeromotive when I did have a question. great customer service!
Very easy to work with at the track.
and the best part....... (drum roll please.....)
Their contingency check is usually one of the FIRST to arrive. And in this day and age, that accounts for a lot in itself (IMO)!

Unk

[1320racer]

Todd, FYI, long before I ran a Holley carb, I ran a Q-Jet on my 468 well in to the 10's! Same pump, same dead headed regulator and same stock unsumped gas tank.

Hi Ed, Did it run faster with the Holley or the Qjet? How fast did you end up running with that engine?

Originally Posted by 1320racer

Todd, FYI, long before I ran a Holley carb, I ran a Q-Jet on my 468 well in to the 10's! Same pump, same dead headed regulator and same stock unsumped gas tank.

[1320racer]

it did run quicker IIRC .08 when I made the swap to a 950HP. Don't remember if or how much faster. Best ET/MPH with this cast iron oval port headed 468 in my 3880 lb. Chevelle was 10.07 @ 131