some comments
projectzerog forum had a number of built DSM powered pickups, put truck oe 5speed & diffs to the test


a hi strung DSM/2.4 truck thread on projectzerog, said he cracked 3 truck blocks, heading for 500hp. His DSM blockok ~800


ok so 7-bolt here, hence the different head bolt/studs and oddball flywheel application
Luckily, light flywheels won't make any measureable 'performance' difference, due to the rev nature of these motors.
Starion oe was a whopping 36 pounds, so shaving off in the rahge of 15 pounds was the norm/happy(& safe) zone.


Maybe that oe 7 bolt was drilled for a bigger diameter clutch ? starion 240mm perhaps


I'd think DSMs would have a hard time hitting 400whp on a T04E @20-22psi.


exactly which cast pistons used in your rebuild ? I ask because some street DSMs went past 30psi om stock and $90 NPR replacements
A few claimed NPR supplied oem DSM pistons