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Thread: will 4.56 gears help my 1/4

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  1. #1
    Join Date
    Jan 2009
    Location
    florida
    Posts
    33

    will 4.56 gears help my 1/4

    hey guys just want some of your opinions on stepping it up to 4.56 gears from 3.73s ,the extra reving at highway speeds wouldnt bother i use to own a smallblock 93 s10 with a turbo 350 373s with a 3000 stall so that reved at 3000 rpm at 60 no problem .so i figured the silvy will be around 2400 at 70mph with 265/50/20. im just wondering how would light throttle be will it shift sooner will it shorten first gear,and will it bog down normal driving and make it louder or will i make it up to speed with ease.also how would it affect my stall speed launching .just wondering if its worth doing and i figured you guys would thanks for the replys


    4.8,93 octane jflomato tune,no cats,true dual 40 flows,3000 circle d stall,373 g80,160 stat,
    before 93 tune

    60 2.143
    330 6.220
    1/8 9.654
    mph 72.04
    1000 12.567
    1/4 15.051
    mph 89.63 slow trap speed

  2. #2
    Join Date
    May 2008
    Location
    Crowder, OK
    Posts
    8,005
    Gear depending on your RPMS at trap speed. If you're low in the rpms when you cross the line, gear up.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  3. #3
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    It won't bog you down for sure. It will shift sooner though. The 4.56 idea only came from the giant cam you were wanting to run.

  4. #4
    Join Date
    Jan 2009
    Location
    florida
    Posts
    33
    still plan on putting in a cam which what will be my best combo and will it stall higher or lower with 4.56 gears

  5. #5
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    Lower gears help bandaid a too tight converter but they won't change the stall speed much. You need 3600-4000 stall for that giant cam you have picked out or you might wanna go 6.0.

  6. #6
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    4.56s will help everything--including burning gas a lot quicker.

    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

  7. #7
    Join Date
    Feb 2007
    Location
    Spring, Texas
    Posts
    1,739

    2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive

  8. #8
    Join Date
    Jan 2009
    Location
    florida
    Posts
    33
    yea suckin gas haulin ass
    but i would think around town under 60 would be about the same and any thing faster then that would effect gas milage because wouldnt it get up to speed alot easyer with less strain on the motor?

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