I have read on here both sides of the story. . . obviously 402T's have less duration and more lift, but some posts I've read swear that you can tune out the overlap from the 403's and that when you do - the will make more power than the 402t's.

Please don't post what you've heard - as I just did above and I'm sure since you are reading the same forum, you've heard the same things.

Anyone with experience or dyno sheets - please post on this - I am ready to finish my head and I want to know for SURE before I invest. NO backtracking on this project.


Thank you for your input

 

Good subject . I'd like to see the comparisons as well and the curve w/ the 403's overlap "tuned out"

Phil

 

Anyone have any experience with this? Or do I have to buy them both?

 

211/210 duration @ .050?

That hardly has ANY overlap. We just had a custom cam ground for my Dad's car, 240/232 @ .050, SPECIFICALLY GROUND for a turbo car, done by a cam company that does tons of grinds on turbo cars.