Here you go buddy
R/T: .335
60': 2.082
330: 5.973
1/8: 9.221
MPH: 76.27
1000: 11.995
1/4: 14.390
MPH: 93.44

 

seems to me you need a little more converter. 3400 will do you well imo plus keep your mph if not raise it.
get rid of the flowmaster IMHO. i broke my exhaust open and i didnt run any better than with it hooked up. i run a 36" Magnaflow round muffler. i need 1 7/8" LTs or hell even some TXsilverado LTs...i think he has 1 7/8" stepped to 2" with 3" or 3.5" collectors. *sorry if i got that wrong TXsilverado*

your truck would be great with a Tru-Trac in it my G80 had me cutting 2.0 60's on DRs lol. it wont be long until your running 12.7s with that set up.

what tires were you running unless i missed that.

 

im thinking tru-trac or eaton with a gear swap 4.10s or 4.30s idk just yet. tires were M&H dr's 275/55/16

 

same DR i have, they are nice but i spin em out the hole.

3:73 now, 4:10s are good but not worth the swap. 4:30s will be good BUT whats your street tire size? you dont want to be turning 2300-2500rpm at 70 ya know? my rpms are 2100ish at 70 and im happy with that

 

29.5 tall, im at 2100rpms at 70mph, so i dont what the 4.30s will do

 

2250ish id think.

worse thing just put a taller tire

 

That doesn't seem to bad! It doesn't get drove far! I been driving the tahoe everywhere!

 

well...4:30s it is hommie!

 

You think I can win with 4.30s lol

 

like Richard at WCCH told me.....its the E.T that wins the race not the mph so you better hope you tree me or im coming