smorganjr

What rpm is everyone safely turning their stock bottom end lq4's in a racing application? I will have all ARP bolts in the bottom end also...

TurboBuick6

iTrader: (2)

I turn my LQ9 to 6,800 on stock bolts. No issues as of yet, knock on wood.

smorganjr

Yea i was thinking around 6500 or so, my cam will run up to 6800 but was thinking about setting the box at 6500...

smorganjr

it will also be on the rev limiter a whole lot, going in a off road rig!

TurboBuick6

iTrader: (2)

What type of truck?

windmill

iTrader: (4)

im usally turn mine with stock bolts about 6800 on nos its 6900 and about 7100 at finish line

smorganjr

it will be in a Jimmy Smith tube chassis rock bouncer

Redbull87

iTrader: (3)

I spin mine to 6700 on stock bottom end.

smorganjr

I have the 99-00 lq4 if this makes any difference.

96capricemgr

iTrader: (1)

You understand the ARPs will pull the big ends out of round and require resizing right?

If the bolts are upgraded and big ends resized then give it hell. If you think you can just swap to arps in block and leave it at that, let us know how long before the oil turns copper colored. Been documented and measured the ARPs require resizing ARP even says so.

smorganjr

makes sense but im new to the ls family so what are you referring to as big ends? main caps?

96capricemgr

iTrader: (1)

Rod caps.