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With proper tweaks and instumentation the record is ~140hp and 190ft-lbs of torque (ish)
-Proper valve lash
-Proper cam timing (chain stretch)
-Proper injector pop pressure and spray pattern
-Advance IP drip timing to 26*-28* depending on when the engine starts to knock
-Proper length fuel pressure return spring
-Make sure the ALDA works properly
-Install EGT gauge pre-turbo
-Install boost gauge
-Ream prechamber holes (this one is still controversial)
Messing with the pump's internal settings and the turbo wastegate can get you the extra oomph, but your limit is around 1100*F exhaust pre turbo, and 16ish psi on a stock Garrett turbo (lower on the KKK turbo I believe)
To go faster, make sure the transmission is shifting at the right points-early shifts make a 300D sloooooow
With a ported head, larger valves, custom manifolds, a bigger turbo, and a modified IP($1200+) the sky is the limit. I don't know the actual max on stock rods but it's often estimated at around 300hp(with the heavy modifications)
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