Rod bolt torque

[mark salanco]

Looking in the TM, I see 2 different rod bolt torque values listed.
LDT 465-1C 81-86 pound feet
LDS-465-A1 81-86 pound feet
LDS-465-2. 95-100 pound feet

The engine I'm rebuilding is an LDT, with the TD block.
I purchased new 12 point rod bolts, so what is the torque value?

 

[gimpyrobb]

85 ft lbs

 

[mark salanco]

So the 12 point and hex head rod bolts have the same torque values?

 

[SCSG-G4]

It's the engine that's being rebuilt that requires a different torque spec LDS-465-2 takes more torque as you found out, so if you are building an LDT-465, or an LDS-465-1A, you use the lower value.

 

[mark salanco]

So the LDS-465-2 has different connecting rods in?
Just trying to sort this out, I was under the impression that rod bolt torque was determined by the rod bolt characteristics, to achieve the proper bolt stretch.
I remembering building Chevy engines, the ARP rod bolts had a different torque requirement than the stock Chevy rod bolt.

 

[gimpyrobb]

The lds-2 has 210hp and only came in the m656 tractor/cargo. It has subtle differences, but is also quite rare. Unlesss you got lds-2 rods, use 85ft lbs.