Between 1997 and 1999 gm used 2 different types of connecting rod bolts.
Ls connecting rod bolts.
Which ls fasteners are tty.
Arp cracked rod bolts ls1 234 6301 138 47.
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Connecting rod used in 2005 2007 ls2 and 2008 2012 ls3 engines has bronze bushing.
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Arp connecting rod bolt kit ls 134 6006 110 31.
The balancer bolt is also a torque to yield fastener.
Each have different torque specs so it s important to know the difference.
Ls connecting rod bolts.
The following engines may have either design.
Btr connecting rod bolt btr70662 2 25.
This information applies to all current gen iii and iv design small block engine.
On a gm ls engine the cylinder head bolts are tty and cannot be re used.
The vertical main bolts can also be re used but the side bolts are.
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The rod bolts were used at different times.
Is it okay to reuse connecting rod bolts on some late model gm engines advertisementclick here to read moreadvertisement the aera technical committee offers the following information regarding revised connecting rod bolt torque for 1997 2007 gm 4 8 5 3 5 7 and 6 0l engines.
What engines used them.
The connecting rod bolts are also tty but can be tightened up to three times for bearing checking.