I got a built motor with weisco 1400 pistons and Manley H tuff rods. ARP 2000 bolts and head studs. Does anyone know any information on how much torque these rods can handle? They are between H beams and I beams in strength and look much thicker and abit heavier then standard Manley H Beams. My setup is:
-Fp zero
-looking to push 34-37psi with e85, tuner estimates 650-700 whp, I’m not sure how much torque it’ll make. Hoping the rods can handle 550tq if it gets there.

 

i think you are ok. link and info from STM.

Flywheel HP rated at 950HP.

https://stmtuned.com/products/manley...t-4g63-dsm-evo

• Manufactured from 4340 forgings
• Heat treated, stress relieved, shot peened and 100% individually magnafluxed
• Weight matched sets + 1.5 grams
• Cap fasteners are 3/8" ARP 625+ bolts.
• Flywheel horsepower range is 950

 

Rods are cheap in the grand scheme of an engine build.

For engine <600whp we use standard eagle he beams. For anything >600whp or race car applications we move straight to Carrillo Pro-H. Special cases we will upgrade to the CARR bolt in the Carrillo's, and for some drag cars really pushing it we'll go to aluminum rods.