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  1. #1
    Fuel Injected! 1leg's Avatar
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    1993 Chevy ½ ton Drag truck

    I’m starting this tread to document all the changes, advice and other mods that I will be doing to turn this truck into a bracket racing champion. The focus will be on engine modification and tuning. I will have a thread on another forum to document other modification, but I will keep you all up to date on any mods.

    Currently this truck is a daily driver and is completely stock except, for the Eaton trac-lock in the rear and a line lock. The plan is to remove all the 4wd parts to convert to 2wd, possible 4l80 swap. Goal is to get consistent 8.90s at my local track www.baronadrags.com .

    I will be logging as I make passes down the strip, and then post them here to log the changes and request advice on how best to tune.

    Best ET 1/8 mile
    12/11 – 10.83
    Best MPH 1/8 miles
    Last edited by 1leg; 02-02-2012 at 06:22 AM.
    1993 RCSB 1/2, 350/4l60 Eaton locker 3.42-1. Drag truck ET 10.84 1/8mile. Build Thread
    1989 V2500 Suburban 350/th400, 4.11 gears, Tow truck, needs TBI 454 swap. Build Thread

  2. #2
    Fuel Injected! 1leg's Avatar
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    1st log Just a drive home from work. using A201_E6_v250.adx
    Attached Files Attached Files
    1993 RCSB 1/2, 350/4l60 Eaton locker 3.42-1. Drag truck ET 10.84 1/8mile. Build Thread
    1989 V2500 Suburban 350/th400, 4.11 gears, Tow truck, needs TBI 454 swap. Build Thread

  3. #3
    RIP EagleMark's Avatar
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    7.90?

    Oh on 1/8th mile... man that would be one fast truck at 1/4 mile!

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  4. #4
    Fuel Injected! 1leg's Avatar
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    I should have said that i want it to stay street legal in California. Maybe in the future it will go faster but for at least the next few years it will remain a DD. i typed that wrong should have been 8.90

    8.90 in 1/8mile = 13.90 in the 1/4mile.
    Last edited by 1leg; 02-02-2012 at 06:22 AM.
    1993 RCSB 1/2, 350/4l60 Eaton locker 3.42-1. Drag truck ET 10.84 1/8mile. Build Thread
    1989 V2500 Suburban 350/th400, 4.11 gears, Tow truck, needs TBI 454 swap. Build Thread

  5. #5
    RIP EagleMark's Avatar
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    Still fast for a full size truck!

    Ever thought about a shot of nitrous?

    Lower gears can make you go fast, fast but that depends on your need for highway driving.

    Probably easiest way to go fast on a stock motor for drag racing is a WideBand O2 sensor and use your PE AFR table. Since it's all WOT watch your wideband and adjust PE AFR get down to 12.8 to 1 or so, wideband would be accurate, PE AFR is a guestimate off VE table, high test fuel, add spark and watch your knock sensor.

    Oh and we want videos when it happens!

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  6. #6
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    Sounds like a fun goal.

    How about retarding the cam, changing to numerically lowest gears possible (3.08 may be a possibility) and slapping the 4wd lever into 4 Low? In town, light to light, I've pissed off some pretty fast cars in a beat up old stock blazer by using 4 low. Open the divider between the two sides of the intake, maybe cut down the valve guides, install a set of Comp beehive LT1 springs, an Ebay factory LT1 or L31 roller cam, and some roller tipped 1.6 rockers and just keep winding 'er up until something blows. With three wheels driving you'll be one of the few guys at the drags with too much traction and at a 1/8 mile track the extra 2.72 gearing would allolw you to use all the tranny's gears. Research and a little extra work might allow something as cool as the ZF 6 speed truck trans with an AWD xfer case having low range so you've got plenty of gear, a way to relieve driveline tension, and an engine that is still close enough to stock to be street legal.

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