gt2871 and not using the revs is breaths to is kinda limiting what it can do..
it will want to go to 8krpms, but do you want to risk a high milage valvetrain..

if engine is apart, and valves could be fitted, its the best time to do it. do it once, do it right
 
gt2871 and not using the revs is breaths to is kinda limiting what it can do..
it will want to go to 8krpms, but do you want to risk a high milage valvetrain..

if engine is apart, and valves could be fitted, its the best time to do it. do it once, do it right

Completly understand, Bill.
 
8k is the limit i would run to with them.. on supertech valves.
if you allow the motor to rev, and it will really want to when it can breathe thru the larger turbos, you get a wide powerband.. clipping the wings when its only just got into its stride verges on criminal.. :p

3.5k to 8krpms of power.. is addictive.