just bought a 6765 T4 flanged with .81 AR
my question is would the T4 .96 AR be better for me for making power?

the setup will be on a sleeved gsr 83mm 10:1 compression
stock port head ferea stock size valves pro 1's, springs and retainers
topmount manifold open scroll
victor X intake manifold
fuel will be sunoco race fuel 114+ octane

looking to make 800+whp with this setup
this is not a street car. will be driven once in a while to cruise nights and shows but mainly a track car only

if any other info is needed lmk

thanks in advance.

 

yes, a .96 will flow better and help your chances at peak numbers

 

if i were to stay with this smaller housing how much would it hurt me?

 

In a similar change I made on my car, I saw a loss in spool time of about 100rpm but a 30hp gain in the top end, and this was only at 22psi.