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Paul
Crazy Horse

USA
776 Posts

Posted - 11 Sep 2012 :  10:48:42 AM  Show Profile  Reply with Quote
I have a set of 5140 RPM connecting rods with 7/16 ARP bolts.They are going in my Pontiac 455, if I recall the torque spec for these are 75 ft lbs, is that what you guys torque Yours at?
Thank You,

Paul

PontiacMatt
Many Ponies

USA
1410 Posts

Posted - 11 Sep 2012 :  11:06:20 AM  Show Profile  Reply with Quote
I'm running the same rods I believe, thought the box had a little instruction sheet on what to torque them too, but don't remember exactly, it's been a few months...

75 ft. lbs. sounds right. again, best make sure from a professional. could also call the vendor you purchased them through and check for certain. I know Butler sells them, and they have always had great customer service in my experiences.

*72' Pontiac Lemans* - Work in Progress
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Paul
Crazy Horse

USA
776 Posts

Posted - 11 Sep 2012 :  4:03:33 PM  Show Profile  Reply with Quote
I found the paper that came with the rods, it says 70lbs for 7/16 stauds.

Paul
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PontiacMatt
Many Ponies

USA
1410 Posts

Posted - 12 Sep 2012 :  11:08:48 AM  Show Profile  Reply with Quote
good deal, always best to know for sure, and to go with Manufacturers specs/recommendations.

*72' Pontiac Lemans* - Work in Progress
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Paul
Crazy Horse

USA
776 Posts

Posted - 12 Sep 2012 :  11:45:41 AM  Show Profile  Reply with Quote
Thanks,
The Machinist who installed the pistons and balanced all the parts hid it in the box.

Paul
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beertracker
Cochise

352 Posts

Posted - 28 Nov 2017 :  12:38:10 PM  Show Profile  Reply with Quote
My search lead me to this post. Does any one know how many revolutions per minute you can safely spin a Race Products Maximum 5140 rod? The engine is a mild (415 hp) 455. I called Race Products Maximum and they said good to 550 hp and we don't have a revolutions per minute
specification.

Thanks,
bt

Houston the anus of TX

Edited by - beertracker on 28 Nov 2017 12:43:16 PM
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cortcomp
Coyote

USA
5354 Posts

Posted - 28 Nov 2017 :  7:59:01 PM  Show Profile  Visit cortcomp's Homepage  Reply with Quote
IIRC, Mr. Pbody told me not to swing them more than 5500 regularly, and probably about 6k here and there, in the 455 i put together. On a 455 Jim Taylor put together, with reconditioned stock rods, it is written on the paper and underlined twice that the redline is 5200. Take that second hand info for what it's worth i guess.
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beertracker
Cochise

352 Posts

Posted - 30 Nov 2017 :  10:05:16 AM  Show Profile  Reply with Quote
cortcomp, thanks for the info. bt

Houston the anus of TX
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