Changing gears-affect speedometer?? - Third Generation F-Body Message Boards

BowtieFever · 09-20-2001, 07:33 PM

Was thinking of putting 3.42 gears. How much? How difficult? And will my speedo be off?

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92 Camaro RS
305 TBI
T-Tops
DynoMax Cat-Back Exhaust
Gutted Cat
Hypertech Thermomaster Chip
Custom K$N open element cold air intake
Custom Interior
Window Tint

Kenwood El-Kameleon Head Unit
Pyramid 6x 9's
Jensen 5 1/4's
2- 10" Kenwood Cyclone Subs
Pyramid 600 Watt Amp
Best ET: 15.976 @ 86.01 mph
reaction time: 0.479
60 ft: 2.269

Enkil · 09-20-2001, 07:51 PM

Not much, not hard, and yes your speedo will be off, unless you get a new speedo gear or different sized tires to make up for the difference.

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89 iroc-z 305 tbi
k&n filtercharger, open element air filter. nuffin' else

poncho9789 · 09-20-2001, 07:54 PM

Cost would prob be under $500 for a pro to set the gears and the gears. For the speedo yes it will change the speed reading. Look on the frequently asked questions section for the right speedo gear for your axle change.

Mark A Shields · 09-20-2001, 08:36 PM

It will affect your odometer as well.

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'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite