SD4 valve train installation (Page 1/1) IMSA GTU JUN 16, 09:49 PM I’m finally at the point to install my NOS Jesel roller rockers into my SD4 and I’m looking for all the torque specs. I’m using the 437 head and have 14:1 compression if it changes any specs. Any help is appreciated, not trying to mess up a $1200 valve train. Better safe than sorry otherwise my plan was to go off what ARP has theirs set at armos JUN 23, 01:13 AM I don't know, but just in case you haven't noticed you posted this in General Chat. You might get more attention on this if you post it in Technical.