I looked up the reason why people need to resize rods with ARP studs and it's because the increased pressure from chromoly bolts slightly changes the shape of the end which can lead to slightly increased bearing wear. However people replace the bolts with ARP studs without resizing them with success. I'm out of options and money and I have to have this engine running in 2 weeks.

 Originally Posted By: CNC-Dude #5585

250 rods only torque to 35 ft.lbs, there only 11/32" not 3/8". Why did you think they torqued to 45 ft.lbs.


That's what the chilton's book said. I guess it lied

69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.