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Messages - 64PI

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106
FE Technical Forum / Re: Running out of fuel on the big end..
« on: February 23, 2019, 07:35:01 AM »
I have no dyno results. Im still developing this set up. It’s been a 12 year long progression from the car running low 13’s with a mild 390. To low 12s with a 390 with angle cut heads and a 294s. To where we are today. The converter came from Edge and it’s based off all the information I gave him. I could very well be shifting too high and never tried shifting below 7k. I’m by far no expert and appreciate your guys help. I’m working on building another dedicated drag car so I can start getting more track time. I guess I set my expectations a little on the high side for this set up. But I’m still going to have pro systems check the carb out and I’m going to make sure I have nothing wonky going on in the fuel system. I should also invest in a plug reader.  I still can be proud to say I have a street driven pump gas low 11 galaxie! Thanks. Fred.
https://www.facebook.com/VromanSpeedShop/videos/10155066592063479/ Here’s a video of the car running with drag radials

107
FE Technical Forum / Re: Running out of fuel on the big end..
« on: February 23, 2019, 04:03:42 AM »
The converter flashes to 5000-5200 area on launch. I shift around 7200-7500 and trap rpm is around 6800 on a 29” tire. A little higher with a 28”. I’ve had several people look at plugs with me and agree it’s strange not to see any changes with the jet change.

108
FE Technical Forum / Re: Running out of fuel on the big end..
« on: February 22, 2019, 06:02:48 PM »
I’m running Sunoco 93 octane. 10% ethanol. It leaves “normal” color on the plugs cruising  3500-4000. I’m running 2 1/8” cross over headers into 3.5” straight through dynomax mufflers. Exhaust ends before the axle. No air filter at the track. Running a water pump, fan and alternator off the engine. Compression is 11:1. Cam specs are .700” lift int/ex. 266/274@ .050 108lsa installed at 104ICL. Cnc edelbrocks from Barry and a port matched victor. I would guess average wind speed to be 2-5mph. Aerodynamics of the Bismarck. I am definitely mounting a fuel pressure gauge on the cowl before the next track visit. Fred

109
FE Technical Forum / Re: Running out of fuel on the big end..
« on: February 22, 2019, 04:46:29 PM »
The carb is a Pro form 4150 1000hp series carb with Venom2 metering blocks. Jet extenders in the rear and stepped high signal .156 boosters. I have ran the car at the track with this combo 2 different times and I will share the info for each so this might get lengthy.

#1. With M/T Drag radials. 1.54. 60’. 7.08 1/8@96mph and 11.18@118mph.
Started with 84/92 jets and worked all the way to 90/98 with no color change or change in Mph. Tried adjusting fuel pressure and float heights and no change. Also a 6.5 PV in front.

#2 Hoosier slicks. 1.50 60’. 7.03 1/8 @ 96.8 mph and 11.14@118.67mph. All improvements in time due to the slicks. Now here’s where it gets funny. This time I blocked the PV off. Squared the jets up at 94 amd still clean plugs on the top end. Don’t ask why i did this I had a hair brained idea.

I can accept the fact it’s not going to gain any ET. But not being able to get color on the plugs is concerning to me. I have the fuel cell vented with also.

110
FE Technical Forum / Re: Running out of fuel on the big end..
« on: February 22, 2019, 01:43:36 PM »
Quote from: Joe-JDC on February 22, 2019, 01:06:59 PM
Sounds to me that you are running into frontal area vs gear ratio at speed.  You either need more horsepower, or more gear to push the car through the air.  I ran 4.57 gears in my Mach I with FE for 10.90s, and 5.13s with sbf.   That Pro Systems carb should have been close out of the box.  If you still have 7 psi going through the traps, you do not have a fuel delivery problem.  Joe-JDC


That is a good point, Joe. I am possibly trying to tune in time that isn't even there. I have had my hands on the pro systems for a few years now so I could have sent that right out to lunch. I also need to cowl mount my fuel pressure gauge so I can check it at speed. I am setting the pressure off the gauge under the hood and at idle.

As far as slow tracks that's all I have been running on. I run at ESTA dragstrip in Cicero, NY. Its up hill and against the wind.

111
FE Technical Forum / Re: Running out of fuel on the big end..
« on: February 22, 2019, 12:14:06 PM »
The car has never seen a 10... I'm hopeful with my fuel situation situated I can squeak it in. I believe there is more left in it... especially with running 11.14@ 118 while going lean on the big end. Or maybe I'm just dreaming....

112
FE Technical Forum / Re: Running out of fuel on the big end..
« on: February 22, 2019, 11:10:06 AM »
I'd say its a combo of plug color and top end performance.  I will dig out my time slips when I get home so I actually have numbers to compare 1/8 vs. 1/4 mph and times. I should look into some sort of A/F reader and a way to log the info.. I've tried going up in fuel pressure, raising float levels to going up 8 jet sizes with no change to the plugs or et/mph. Fred.

113
FE Technical Forum / Running out of fuel on the big end..
« on: February 22, 2019, 10:15:17 AM »
Looking for others input on what they are running for a fuel system on their drag cars. I'm currently running a Holley blue, 8AN line with a in line filter, Holley regulator set @ 7psi to a pro systems 1000cfm carb on a victor. The engine is a 451" stroked 390 with CNC edelbrocks from BarryR, .700" lift solid cam with duration around 265-270@.050. I cannot get any color on my plugs going through the traps no matter how much jet I throw at it. I've check and found no vacuum leaks. The car goes 11.14 @ 118mph. The car is a '64 galaxie weighing about 3650 with me in it. C4 trans with a 5500 stall converter. 4.20 gears and 29" tall hoosiers. It goes 1.50 in the 60' and high 6's in the 1/8. It seems like I'm loosing something on the top end and I believe it to be fuel related. I have good color on the Autolite race plugs cruising to the track @ 3500-4000 rpm. I'm going to be tearing the fuel system apart and sending the carb back to pro systems for a check up. Any thoughts are appreciated. I'd like to get things figured out and make it to the Reunion and try and get a 10.90 out of the car.  Thanks..Fred

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