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NMCA Hot Rod Power Festival Fuel Systems - Fueling The NMCA

Photography by Tony Nausieda

The N/A EFI Car
Injected and
Resto-Perfected

We heard there was a mean white Chevelle running in the EFI 11 class, so we scouted around for it but came up high and dry. That is, until we noticed the clean '69 SS396 two trailers down from us-the car looked so clean and stock that we thought it was a spectator's show 'n' shine cruiser! As we admired the functional power windows and perfect paint, owner Clarence Harding informed us that the white behemoth has stopped the lights in 10.36 seconds. Yikes. The 10-second passes come courtesy of a 725hp 509-inch big-block Chevy fitted with Brodix heads and an ACCEL DFI system. Initially, the Chevelle ran 11.70s, but Clarence whittled away almost a second and a half by fitting a larger fuel pump and tweaking the DFI's fuel maps via his laptop PC

Driver/Owner: Clarence Harding
Hometown: Lowell, IN
Car: '69 Chevy Chevelle SS396
NMCA race class: EFI 11
Best e.t.: 10.36 @ 128 mph
Motor: Lingenfelter-built 502-inch crate Chevrolet, bored to 509
Power adder: None
Induction system: ACCEL digital fuel injection, Cutler 1,600-cfm throttle-body, ACCEL prototype single-plane intake
Injectors: Bosch 55 lb/hr
Fuel pump: SX
Regulator: SX, 42 psi static pressure
Lines: AN-8 to fuel rails, -6 return to tank
Tank: 16-gallon cell
Filters: SX, 40-micron pre-filter followed by 10-micron filter
Fuel: 110 octane

The Supercharged Car: White Lightning
Joel Greathouse's '91 Mustang LX has proven itself a force to be reckoned with in the Super Street class. It ain't the prettiest thing out there, but the combo sure works-well enough to catapult the Notchback 'Stang to 7.54 @ 188 mph. Joel says he sized the car's fuel system to support as much volume as possible, so there's no chance of the Pony ever running out of go-juice. The Speed-Pro EFI system allows Joel so much adjustability that he's able to compensate for most track conditions with a few keystrokes on his laptop. Jeez, it seems like no one's using hand tools anymore.

Driver/Owner: Joel Greathouse
Hometown: Oakland, KY
Car: '91 Ford Mustang LX
NMCA race class: Super Street
Best e.t.: 7.54 @ 188
Motor: 377ci Ford
Power adder: ATI Procharger, 26 psi maximum boost
Induction system: Speed-Pro electronic fuel injection, 100mm throttle-body, Edelbrock intake
Injectors: Speed-Pro 160 lb/hr
Fuel pumps: Dual Weldon 2035s, 180 gph @ 80 psi each
Regulator: Weldon, 40 psi static pressure, increased to 70-75 psi under max boost
Lines: AN-12 to two-way splitter, -10 to fuel rails, -8 return to tank
Tank: 5-gallon cell (second cell is an ice cooler)
Fuel: VP C16

The Nitrous Car:
Tony Christian's N2O NemesisWhen a vehicle is capable of 210-mph quarter-mile blasts, you just have to wonder what makes it go. We did, so crewmember Scott Wolter lifted the skin off Tony Christian's Outlaw Street Firebird and showed us around the nitrous'd 706ci Pro-Mod motor and the fuel system that keeps it from burning into a supernova. That's no lie-with two stages of nitrous adding over 600 hp to the motor's 1,300 hp, even a fraction of a psi fluctuation in fuel pressure could mean sayonara for the big-block. Good thing Scott's installed sensors to monitor fuel pressure in each of the nitrous stages. They're tied into an on-board computer, and the fuel pressure is logged during each pass down the track. Yeah, it's about the wildest fuel system we saw at the Memphis event. But if your motor gulped down 1 quart of fuel on every sub-7 second quarter-mile run, you'd want to be awful sure the fuel system is capable of feeding it.

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