Originally Posted By montessa
Thanks Hardcore, what do you have? ...
2 '850HP's done by ThumperDart AND/OR a set of annual '750HP's done by ProSystems.

What do you guys think?...
I think you should commission or at least consult ThumperDart to tweek on your 4500's, there's likely something left with those...logging A/F data thru the run is valuable. I also think you need ANTI-REVERSION plates below any carbs you choose on a T/R

I can let you try a pair out, or even dyno them both. PM me your number and we can talk.

Last edited by HardcoreB; 01/18/18 10:42 AM.