Right now I am running 17inch wheels with a nitto 255/50 which gives me an overall diameter of 29 inches. My stock gear ratio is the 3.42. Is this combo slowing the truck down, if so should i go to a larger diameter wheel and tire combo or step up to a 3.73 rearend?
99 Pewter SCSB
DJM 4/6 drop, Hotchkis front/reat swaybars,Hypertech power programer, milled & built heads, Accel wires, distributer,coil, Mass Air Flow Sensor(mti motor sports, Granatelli),Dynomax UltraFlow Stainless, 17x8.5 Eagle Alloys, Escalade door handles, Suburban front grille, with clear corners and billet bowtie,Street Scene mirrors, Cowl Hood
A 3.73:1 wouldn't hurt, but if you're going to regear... I'd go to a 4.10:1 so you could run a taller tire if you wanted to or there's always a 3.90:1
The superior man is modest in his speech, but exceeds in his actions. - Confucius
"He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel
'01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
'80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL
Let's face it, the red hair... makes 'em wet.
255/50's should be exactly 27". 275/50 is 27.8" tall. these are what i run in the Nitto 450's and i have 4.10's
Hugger Orange 99 SS Hardtop #756
485rwhp/440rwtq SAE
Yeah your right I measured today and they are 27 inch diameter. Is the 4.10 gear a good match with those size tires. I do alot of freeway driving but also want the good speed around town. I was not sure if I should go 3.73 or 4.10?
DJM 4/6 drop, Hotchkis front/reat swaybars,Hypertech power programer, milled & built heads, Accel wires, distributer,coil, Mass Air Flow Sensor(mti motor sports, Granatelli),Dynomax UltraFlow Stainless, 17x8.5 Eagle Alloys, Escalade door handles, Suburban front grille, with clear corners and billet bowtie,Street Scene mirrors, Cowl Hood
im on a factory sized tire from a 2005 silverado. with my 3.73 runnin 70mph puts the rpm right at or a little above 2000 rpm. i wouldnt put on a 4.10 on my truck just because of how much highway driving i do (about 350 miles per week). if i had loud exhaust it would probably drive me crazy.
old mod list: H/C/I/N/E/G 408
new mod list: 5.3, gears/posi, mufler and tune : (
3.73:1 is the best choice I'd think unless you plan a monster cam or taller tires. It'd keep you from taching out as badly on the freeway.Originally posted by pewter99@Jan 20 2005, 02:08 PM
Yeah your right I measured today and they are 27 inch diameter. Is the 4.10 gear a good match with those size tires. I do alot of freeway driving but also want the good speed around town. I was not sure if I should go 3.73 or 4.10?
I have a 28" tire, 0.70:1 OD, and 4.10:1 in my F150 and it hits 2400rpm at 70mph if I run it that fast...
The superior man is modest in his speech, but exceeds in his actions. - Confucius
"He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel
'01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
'80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL
Let's face it, the red hair... makes 'em wet.
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