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limits of a arp rod bolt

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Old Nov 16, 2011 | 10:20 PM
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Default limits of a arp rod bolt
I've got a 370 longblock never noticed till now my builder put arp 8740 rod bolts in it. Not his fault i just said throw some arp mains and rod bolts in it never specified. The thing is this motor will see 16 psi around 700-750hp with shifts limited to 6700-6800 rpm. Am I pushing my luck with these rod bolts or am I just overthinking everything?
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Old Nov 17, 2011 | 01:22 AM
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Whats wrong with those bolts? I know they have the 2000s but most here use the lower line. Most experienced builders here will tell you 67/6800 is pretty safe for stock 01-up rod bolts so I'd say you're good.
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Old Nov 17, 2011 | 02:00 AM
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They are fine as long as they were installed correctly. Are you running stock rods?
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Old Nov 17, 2011 | 08:51 AM
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Originally Posted by 01ssreda4
Whats wrong with those bolts? I know they have the 2000s but most here use the lower line. Most experienced builders here will tell you 67/6800 is pretty safe for stock 01-up rod bolts so I'd say you're good.
why are the 01-up rod bolts better then the 00-below bolts? also what is a safe limit for the 00 and below bolts?
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Old Nov 17, 2011 | 08:57 AM
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They will easily hold that... what rods?
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Old Nov 17, 2011 | 09:42 AM
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I push that high of RPM on stock bolts and rods.

The bolts are stressed by RPM's and not horsepower so you will be plenty fine.
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Old Nov 17, 2011 | 10:07 AM
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I'm running k1 technologies rods I have no doubt that they are installed correctly just never really heard anything on the 8740s. I tend to over think things and expect the worse lol
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Old Nov 17, 2011 | 09:30 PM
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Originally Posted by 00pooterSS
...The bolts are stressed by RPM's and not horsepower so you will be plenty fine.
Correct! The greatest stress on a rod occurs right after TDC on the intake stroke when the piston changes direction and is not loaded. At this point, the stress is strictly on the cap and bolts as they are pulling the piston back down the cylinder. RPM is the enemy here...
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Old Nov 17, 2011 | 09:35 PM
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Originally Posted by TermnEatr
I'm running k1 technologies rods I have no doubt that they are installed correctly just never really heard anything on the 8740s. I tend to over think things and expect the worse lol
They are most likely slightly larger diameter than a stock ls1 rod bolt then, and should not be anywhere near the "limit"
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Old Nov 17, 2011 | 10:59 PM
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Thanks guys for easing my mind I'm creaking pumped can't wait to get this thing going!
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