Hi, Been lurking for a while doing some reading and whilst in the garage minor works on my crewie...

Have cold air intake, custom exhaust, pacemakers and looking for the next upgrades - I am going to sort out bigger brakes as the next job - but then I am looking at head/cam mods as a "reliable" power upgrade. 95% of kms/time is on fwy so not entertaining any diff ratio changes at this stage.

My question is that after dynotunes I am seeing claims of fairly significant claims of increased outputs from the LS1 with a mild cam/head package and decent breathing - at what level output do I need to think about modification to the crank/bottom end and my gearbox/transmission. I have a 4 speed auto box...

Cheers