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Thread: push rod length

  1. #1
    78 Sprint
    I have a 73 ls7 in my 78 eliminator sprint are the intake and exhaust push rods the same length. I know the motor has been rebuilt not sure of the cam. Just wondering thanks for any help.

  2. #2
    Senior Member
    Join Date
    Feb 2009
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    2,626
    No, the intake and exhaust pushrods are not the same length. Exhaust are longer.
    Got any pics of your Sprint? I've got an 1980.

  3. #3
    Senior Member
    Join Date
    Feb 2009
    Location
    Irvine, CA
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    2,885
    Good push rod sizes should be 8.38" & 9.35" for an LS7
    Brian

  4. #4
    Captain no fun
    It is imperative that your pushrod length is correct. The heads can make a difference, as I recently found out. Contact a reputable machine shop for a pushrod length checker. It's a little blue plastic tool made by Manley if I'm not mistaken. Build it right, and you'll enjoy it for years.

  5. #5
    crf311
    It is imperative that your pushrod length is correct. The heads can make a difference, as I recently found out. Contact a reputable machine shop for a pushrod length checker. It's a little blue plastic tool made by Manley if I'm not mistaken. Build it right, and you'll enjoy it for years.
    I agree. You want the contact of the rocker to be centered over the valve thru the openning and closing of the valve. It took me about 1 hr with a push rod checkerand adjustable push rod. Then a still needed to try a couple of differant length rods until I got a contact patch I wanted. Check, Check and recheck.

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