gearing

Asked by Nov 11, 2011 at 04:05 PM about the Chevrolet Silverado 1500

Question type: Car Customization

i have a 94 silverado with a 5.7 v8 and a 3.42 gear ratio. i want to go with a lower ratio such as a 3.73 or a 4.11.it also has an auto trans. is there any way i can find out how much this would change my rpm at a certain rpm? for example, 60 mph? i tow a 5,000 lb. trailer and would like a little extra torque but dont want to run a high rpm.

4 Answers

3,185

YOU HAVE ALREADY ANSWERED HALF the question before you even knew what to ask ! ..Ok 3.42 gears , what is the tire DIAMETER ? measure it .. then we must assume an automatic trans , overdrive of course ... cachick cachick cachuck .... answer .well here it is. IF you switched gears to a 3.73 ratio .. thats about one third of one turn out of three turns to make one turn of the axle .. from a 3.42 ... not much diff there ...especially when you figure in the overdrive , which makes living with basement gears liveable .. next ... how= many miles each year towing boat trailer loaded with boat only - miles driven each year when not towing trailerwith boat only / wait thats a negative number .. ahhh yes .. forget about the whole thing , or buy a bigger boat ... !!!! PBN

3,185

AT 3000 rpm with 3.42 gears and a 27 inch tire , mph is about 70 .. with 3.73 gears and the old 16.5 LT tires ,3000 rpm was about 60 mph or so ... with 4.11 gears and the same 16.5 tires .. 29.5 inch tall (I think ) 3000 rpm with 4.11 gears is a snails pace 55mph . it's just like driving in second gear with the 3.42's ... PS whatever the gear chosen , make damn sure the tranny cooler is twice as big as it calls for ... PBN

1 of 1 people found this helpful.

The truck is really only used to pull my boat or tow my 5000 lb camper. Its not a daily driver. I live in the appalachain mts so I've got a lot of hills to deal with. The 3.42 gears struggle with some of the hilly terrain with the camper. I have a trans cooler. Guess I should just buy a truck with a tow pkg but I dont tow more than an hour at most from home. Thanks for the info.

3,185

you could install 4.11's but fuel mileage will drop 10 to 15 % , given limmited mileage driven each year that would be cheaper than a new truck . one more thing though , 4.11 's are fun !!! It will spin the wheels off the rims !! PBN

Your Answer

Add photo

Related Questions

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 175,749 nationwide Silverado 1500 listings starting at $1,250.

ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 2,200
#2 Rowefast
Rowefast
Reputation 1,840
#3 Silverado_owner_2006
Silverado_owner_2006
Reputation 1,630
View All

Related Models For Sale

Used GMC Sierra 1500
822 Great Deals out of 68,199 listings starting at $2,484
Used Ford F-150
2,191 Great Deals out of 206,316 listings starting at $1,499
Used Dodge Ram 1500
454 Great Deals out of 11,152 listings starting at $700
Used Chevrolet Silverado 2500HD
307 Great Deals out of 27,740 listings starting at $1,250
Used Toyota Tundra
440 Great Deals out of 34,312 listings starting at $2,700
Used Toyota Tacoma
541 Great Deals out of 40,814 listings starting at $2,495
Used Chevrolet Tahoe
548 Great Deals out of 29,234 listings starting at $1,699
Used Ram 1500
922 Great Deals out of 113,958 listings starting at $6,386
Used Chevrolet Colorado
216 Great Deals out of 24,314 listings starting at $2,495
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Ford F-250 Super Duty
343 Great Deals out of 46,938 listings starting at $1,895
Used Chevrolet Silverado 2500
8 Great Deals out of 266 listings starting at $3,488
Used Chevrolet Silverado 1500HD
18 Great Deals out of 258 listings starting at $3,985
Used Ford Mustang
474 Great Deals out of 45,735 listings starting at $1,999
Used Dodge Charger
404 Great Deals out of 28,172 listings starting at $1,988

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.