what cam??

And go to a 3.91 or 3.73 rear gear with a 3500 stall converter from a reputable company. If you decide to change the gears and converter know what you're going to before talking to the cam guys. For street/strip I'd keep the Performer RPM and 10 to 1 comp allows you to use pump premium and yes that 750 is way to small, hell I'm running that on a 383. What do you got for headers.