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Thread: 1/8 mile gear

  1. #1

    1/8 mile gear

    i have a 74 vega with a 406 small block, BTE glide with 182 first gear. i have a 486 gear now which i was running a 1/4 mile. what gear will i need to run 1/8 mile? a 514 or lower? i am running14-32 slicks. thanks!!

  2. #2
    Senior Member MASTER BUILDER
    Join Date
    Dec 2003
    Posts
    185
    Whats your finish line rpm in the 1/4???

  3. #3
    Senior Member SENIOR BUILDER
    Join Date
    May 2006
    Location
    Pikeville KY
    Posts
    109
    A 5.43-or-5.57 would be great, and will mput you around 7000 at the stripe
    OSCA PROSTREET CHAMPION 2006
    4.87@143.50 1.13 ALL AT 3200LBS

    2009 PRO STREET CHAMPION LONDON DRAGWAY 4.69 @153.00 3200LBS

    2011 LONDON DRAGWAY RECORD HOLDER IN PRO STREET 4.66 @153.00

  4. #4
    Senior Member MASTER BUILDER
    Join Date
    Jul 2007
    Posts
    148
    486 is good enough and you aint gonna see much difference when you go to a 513 and i wouldnt ever go more than a 513 bcuz you would just be hurting your being consistent and it wont make it go faster ET wise

  5. #5
    Senior Member RACING JUNKIE
    Join Date
    Mar 2003
    Location
    Ohio
    Posts
    935
    If you don't plan on running 1/4 mile at all, 5.13. If you still want to get down the 1/4 mile with the rods in the motor, stay with what you have. I have seen a lot of guys wanting to turn a 406 like it is a sb2 cup motor and throw a lot of gear at it. The end results are expensive and make the guy in the waterbox mad.

  6. #6
    We went from a 4.56 to a 5.14 and I was very surprised to pick up .250 with the exact same motor setup. We did not even pull the valve covers over the winter. I could run the quarter with the 4.56s but, no way with the 5.14s I shift at 6000 with a glide and cross the traps at 6550. 30 inch tires. One thing I forgot is I did make a ladder bar to go with the Slide-A-Link rear suspension and it did help the traction. So maybe that is where it is.


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