95 chevy 3500 gear swap?

lackluster75 · 06-13-2008, 11:50 AM

hey guys im considering changing the gear ratio from 410 to 355 gears..would this be good move? mind you shes got a 454. she is just used for lite work only, not used for towing. please help

stumpuller454 · 06-13-2008, 02:15 PM

are you changing it for fuel economy? or is the gear set bad? i have a 454, with 373s and at 62mph(100km/h) it revs about 1850-1900 with 265s(tires), didn`t know you could get 355s

75K30 · 06-13-2008, 04:09 PM

I believe the 14B's are available in 3.21 and 3.42, then 3.73, with a carrier break at 4.10 / 4.56:1 This means that going from 4.10 to a 3,42 is not going to require a different carrier, so you are cool there. (I do not believe they offer a thinck cut gear, or custom gear to use alternate series carriers). They are fairly cheap to find though
Anyway, if mileage is what you are after, with a 454, you might just be spending money without a reward.
It would take so long to recieve a return on your investment that it probably would not justify the cost. I mean by spending money to gain some savings at the pump, you might see a small increase in mileage, provided that you spend a majority of the time on the highway, and not on the road. You would have to drive several years to offset the cost in gas savings alone. The small change will not magically gain you mileage. Maybe 1 to 2 mpg on average.
At 2 mpg, you can determine how many miles a year you use this vehicle for, and decide how many miles it would take to gain a return on your investment.
Not sure I see it being a great choice.
Take that money and buy a little truck with a 4 cylinder, or motorcycle, and your investment will return in the form of gas savngs at a much faster rate.

lackluster75 · 06-14-2008, 10:14 AM

thanks guys for your input. id hate to get rid of her as shes become some what of a rare truck. you dont see to many single cab duallys that havent been beating to **** here in texas..and with 84,000 original miles. super clean. i had plans on doing a belltech 2/4 drop kit on it with dual exhaust.

06-13-2008, 11:50 AM	#1
lackluster75 Junior Member Join Date: Jun 2008 Posts: 7	95 chevy 3500 gear swap? hey guys im considering changing the gear ratio from 410 to 355 gears..would this be good move? mind you shes got a 454. she is just used for lite work only, not used for towing. please help

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06-13-2008, 02:15 PM	#2
stumpuller454 Senior Member Join Date: Dec 2007 Location: Alberta Posts: 786	are you changing it for fuel economy? or is the gear set bad? i have a 454, with 373s and at 62mph(100km/h) it revs about 1850-1900 with 265s(tires), didn`t know you could get 355s

06-13-2008, 04:09 PM	#3
75K30 Senior Member Join Date: Jul 2006 Posts: 2,518	I believe the 14B's are available in 3.21 and 3.42, then 3.73, with a carrier break at 4.10 / 4.56:1 This means that going from 4.10 to a 3,42 is not going to require a different carrier, so you are cool there. (I do not believe they offer a thinck cut gear, or custom gear to use alternate series carriers). They are fairly cheap to find though Anyway, if mileage is what you are after, with a 454, you might just be spending money without a reward. It would take so long to recieve a return on your investment that it probably would not justify the cost. I mean by spending money to gain some savings at the pump, you might see a small increase in mileage, provided that you spend a majority of the time on the highway, and not on the road. You would have to drive several years to offset the cost in gas savings alone. The small change will not magically gain you mileage. Maybe 1 to 2 mpg on average. At 2 mpg, you can determine how many miles a year you use this vehicle for, and decide how many miles it would take to gain a return on your investment. Not sure I see it being a great choice. Take that money and buy a little truck with a 4 cylinder, or motorcycle, and your investment will return in the form of gas savngs at a much faster rate.

06-14-2008, 10:14 AM	#4
lackluster75 Junior Member Join Date: Jun 2008 Posts: 7	thanks guys for your input. id hate to get rid of her as shes become some what of a rare truck. you dont see to many single cab duallys that havent been beating to **** here in texas..and with 84,000 original miles. super clean. i had plans on doing a belltech 2/4 drop kit on it with dual exhaust.