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Thread: Gas milage drop going from 3:23's to 4:10's

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  1. #1
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    Going with a set of 4.10 gears will help out a lot. City mpgs will get probably 2-3 better because your main enemy is the ECSB 4.8 with 22" rims. With 4.10s, your motor and drivetrain won't have to work as hard to get the pig rolling. Hwy mpgs will either stay the same or get slightly (1 mpg) worse. I would recommend going to 4.10s. If 4.10s seem a bit to high for your needs, you could always get a set of 3.90 Yukon gears...

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

  2. #2
    Join Date
    Apr 2008
    Location
    Okeechobee, Fl
    Posts
    2,007
    Thanx now I can show this to my dad for proof and 4:10's are on the way!!!
    2006 extended cab, 6.0 swap, full bolt ons SOLD
    2011 ECSB, 6.2, 6 spd, 3.73, 5" lift, 33" nitto, limo tint, debadged, volant CAI, muffler delete, black bear tune 14.0 @ 98 on the 33'sSOLD
    2007 TBSS AWD, cam, stall, built trans, N2OSOLD
    2006 RCSB cammed LQ9, full exhaust, 3200 stall, 2-4 drop
    Quote Originally Posted by farmtruc View Post
    "if i have to explain, you don't get it"

    49 Ford F1
    355 chevy / turbo 350 / 12 bolt posi / camaro subframed

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