How far to rev this 273 commando build

Ron at isky told me he built the cam with 2* built in, on a 108 lsa. I installed the cam with dots together facing each other on the sprockets. . Seems to working great !
I have a low first gear 833 trans with 355 gears in my barracuda . I tried a 3.91 gear last summer and did not see any improvements just had to shift sooner and more frequent . put the 3.55 back in .