HEAD NORTH

I am going with some better gears soon and a detroit true trac. If I go from 373s to 410 will I be pleased or should I go to 456's My trucks motor will remain stock for a while. A stall and headers tune and slicks are next. I only use this truck at the track and very little cruzing.

rivierakid55

iTrader: (1)

I'd go 4.56's. i had the same dilemna of going from 3.73.s. but im very happy with my 4.56's. you might look into a set of 4.30's as well.

HEAD NORTH

At the track I'm shifting into 3rd just before the traps I was thinking the better gears should improve alot. What if any were your improvements. Thanks

Mr. Sandog

I went from 3.73's to 4.10's in my Avalanche and was very pleased. Remember also that with a 8.5" rear end you will have a pretty weak pinion gear with 4.56's, so if you plan on modding later for power you should take this into consideration.

HEAD NORTH

TBSS what are my allternatives besides a new rear end?

rivierakid55

iTrader: (1)

i havent been but im pretty sure ill be trapping in 3rd over 5k rpms.

Silver-Dollar

iTrader: (1)

Keep the gears. Add LSD if you need to. Gears maybe be good for a few tenths if power levels are the same before and after. Look at adding power before you switch gears.

HEAD NORTH

OK I will get the converter, headers and exhaust, and tune before gears I already have the factory locker, and post my gains hopefully before the track closes for the season, which is 2 weekends from now. Otherwise its wait till springtime. (EDIT) Aw heck Stainlessworks is a month out for the headers and exhaust so It will be springtime.

bostinchevy13

where do u guys buy your gears at?

HEAD NORTH

I have used (DTS) DriveTrain Specialists There are lots of others who sell gears and diffs. I compare prices and go with who's selling the same part for the best price.