i'm planing on buying probe rods for my h23, the rods come with 3/8 ARP 8740 bolts but i need to find out how much hp those bolts can handle, what do you guys think should i buy the rods with those bolts or do i need to upgrade them to ARP2000, the car is turbo,when i'm done building the engine i'm going to be running low boost 12psi that will put me around 300 or 350 at the wheels and later on i'll increase the boost, i want to be around 400-450 at the wheels so i just want to make sure that the bolts are gonna hold up.

 

try the prelude forum.