1/4 inch. Don't forget if you go crazy with advanced timing and lug the engine ( now that you have a stick ) you can crack the pistons or blow the ring grooves by detonation. Thats only an issue if you lug it down. Keep it reved and all is good.

 

oh crap, im glad you told me that, cause ive been doing that a couple time's, not often ofcourse I take care of my truck, but I have done it just to get her smokin.

Thanks for the help, I could of really screwed myself!

 

ive lugged the crap out of my truck and never had any problems

 

How much timing are you running?

 

Lugging isnt good for any engine