[Question] Connecting rods
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Connecting rods

  1. #1
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    Default Connecting rods

    How much hp and rpm can a stock chevy big block rod handle? Thanks Jeff

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    Quote Originally Posted by Hondo535 View Post
    How much hp and rpm can a stock chevy big block rod handle? Thanks Jeff
    That all depends on which stock rods you have?

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    Quote Originally Posted by ol guy View Post
    That all depends on which stock rods you have?
    I'm not sure but I think they are 7/16. Does that sound right?

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    Quote Originally Posted by Hondo535 View Post
    I'm not sure but I think they are 7/16. Does that sound right?
    Yes it does. If you look at the beams about 2 inches below the pin boss there should be a dimple on the rod. If there is, the factory 7/16 bolt rods are good for 650-700 h/p. I have pushed them further "after a good check-up" from a GOOD machine shop. I would replace the cap bolts after a clean bill of health from the shop. I have ran them on blown applications with no problems. Mark

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    Quote Originally Posted by ol guy View Post
    Yes it does. If you look at the beams about 2 inches below the pin boss there should be a dimple on the rod. If there is, the factory 7/16 bolt rods are good for 650-700 h/p. I have pushed them further "after a good check-up" from a GOOD machine shop. I would replace the cap bolts after a clean bill of health from the shop. I have ran them on blown applications with no problems. Mark
    Thanks for the info. I plan on running the motor approximately 7200rpm.

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    The dimple alone is not an indicator of a 7/16" rod, you need to measure the bolts. Various 3/8" bolt GM rods had "dimples"

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    Quote Originally Posted by Hondo535 View Post
    Thanks for the info. I plan on running the motor approximately 7200rpm.
    You don't mention engine specs or expected power, but why would you not run an H beam rod for that type RPM?

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    Quote Originally Posted by obnoxious001 View Post
    You don't mention engine specs or expected power, but why would you not run an H beam rod for that type RPM?
    I will try to get more info on the motor. It's a 468 that we are gonna use so I can finish the season. It's approximately 13 to 1 with a mild cam. We are gonna put some dart pro 1 super stock heads on it and maybe a little bigger cam. I'm not 100% sure it doesn't already have h beams in it.

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