hey folks
so I have a 69 400 with a muncie 4sp
current set up is #62 heads iron intake pretty much stock set up
with HEI holley 4150 - 650cfm
I am looking at either the performer or the performer RPM
Engine runs decent no knocks pings or oil burn except a little at start up
I really want a better performance between 1500 and 5500
right now it seems to really start to run well at 4500 RPM
so its a short curve for lack of better term
I need more torque and HP all a round

question is with out getting into the lower end would you recommend the performer or the performer RPM
I would like it to possibly be a roller set up
but main thing is I dont want to push it to hard and wind up with a blown motor since im not really ready to get into the lower end
Thanks alot for your input ![img]https://firstgenfirebird.org/forums/ubbthreads.php/ubb/download/Number/19810/filename/69bird.jpg[/img]