Im wondering what gear ratio i need. I have a pretty much stock 5.3 with a 4l60e transmission and a np208 transfer case with 35's. I was thinking 3.42s but im not sure. Any opinions would be greatly appreciated. Thanks!
Im wondering what gear ratio i need. I have a pretty much stock 5.3 with a 4l60e transmission and a np208 transfer case with 35's. I was thinking 3.42s but im not sure. Any opinions would be greatly appreciated. Thanks!
i would go 3.73 imo better allround gear with that tire
05 tahoe z71 ,6.0 LQ9,gmpp l92 heads, 42lb inj.,08 ls3 intake,90mm tb ,nos 150 shot, mild port job ,comp cam, comp 918 lsx new style springs,titanium retainers and keepers,x link, headers, magnaflow s.s cat back 6.0 y pipes ,e fans,aem brute force intake,22s nitto 420s 305 45 22,3.73 auburn posi,yank dual clutch 2800 stall ,custom stage 3 trans by V&O TRANSMISSION,nelson tuned,granetelli wires,2 alpine 12s, alpine amp ,pioneer avic d3 nav
I would say at least a 3.73 may wanna go bigger if you're mudding like a 4.10, 4.56 is also popular
John
Four by Four to the floor.
4.10's with 35's.
You'll need 6 turbos if you want 42's and 35's.
4.56
I got 4.8, 4.56, and its perfect with my 35's.
Go to nationaldrivetrain.com, they have a chart. AND awesome prices.
2013 CC 5.3
81 C10 LS1 project
I have 4.56s, with 35s.
2005 Silverado 4x4, 6" RCD lift, M/T Classic locks on BFG KM2's, 4:56 gears, Air-raid CAI, TB spacer, Nelson tuned, Corvette servos, 160 thermostat, Ebay long tube headers, Flowmaster Delta 40, Cognito Motorsports steering upgrades. 2000 Ford Lightning, 2.3 KB, bolt ons, 7.67 on the 1/8th.
Thanks guys im just looking to run around 2300 rpms at 75 so maybe i will try 410s and see how they act
I'm also running the 4.56 on 35's.
2001 Tahoe 4x4 5.3l, ?Supercharger?, Volant Intake, Gibson Cat-back, Gibson Headers, Tuned PCM, Fabtech 6" lift, 35x12.50, 20" Black KMC Rockstar's
I would go at least 4.10's and maybe even 4.56's. With the larger tire and 4.10's that would act similar to 3.42's (actually around the 3.51 area) with a stock tire height of 30". Where the 4.56's would act more like 3.91's with a 30" tire.
3.14 (Pi) x 30" = 94.2
3.14 (Pi) x 35" = 109.9
109.9/94.2 = 1.16666
4.10/1.1666 = 3.51
4.56/1.1666 = 3.91
Someone feel free to correct me if my calculations are off.
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
why would you gamble and try something as expensive as a gear change and then change it later. Its not like changing an air filter. Do it right once. if you are gonna have 35s and are not going bigger, 4.56. if you plan to go bigger 4.88
'02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
2013 GMC Acadia: SLT1 Carbon Black
1976 Corvette Stingray: Trying to save it, progress is slow.
^Ricky's Sweet PS Skilz
09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly
Posting Permissions
Reply With Quote
