So I am looking at ordering some rods for my ls1 that I am rebuilding and had a few questions that I am getting conflicting answers on. Is the stock rod length 6.1 or 6.125. If stock is 6.1 should I get the 6.125 and if so does it change the CR much? Should I get I or H beam I know h beams are recommended for high power applications my motor might see a supercharger at lower boost in the future (10psi or likely less). Pressed pin or? Also When I had my crank resurfaced they gave me connecting rod bearings for what I would assume are stock rods would I have to get different bearings?

Thanks

 

Nick, if you'd like to discuss some options please don't hesitate to give us a call. We would be happy to answer your questions and make a recommendation for you.

Thank you,
Aaron @ Thompson Motorsports

 

You didn't really specify what you are doing.

Stock rods are 6.098 long.

Rod length and pin type will likely depend on the pistons you get.

 

What specifically would you like to know? I am rebuilding the motor with some stock replacement pistons from mahle. I am aiming for stock CR(10.1:1 if I recall) just in case I add a procharger at somepoint. Its just going to be a ls1 with a couple go fast parts cam, heads, and intake for the time being though. Motor is going in my chevelle to be an autocross car.

 

If you already have the pistons, they're going to dictate a lot about what rods to run.

 

stock rods are 6.098
but most aftermarket are 6.125, the addition length is compensated by moving the piston pin. so your rod decision depends on what piston you're going to run.

H or I beams comes down to budget and what you're doing with it. an equal strength I beam will cost more than a H beam. sounds like you're doing a simple rebuild, you don't have to complicate it. OEM GenIV stuff sounds like it'll fit your needs.

 

Well i called up scat and i got set up with some i beams. I didn't have rods for it and i know the stock ones were a weak point figured i have the money why not fix it. Thanks for the help