7.3 diesel with 355 gears
Has anyone had 355 gears with a 7.3 diesel was thinking about changing to them from 410's but want to know if it will be geared too low, also what rpm will 65mph, be at 410's at 1900 is about 56mph
Forum Discussion
Lower numerical gears, ie going to 3.54 from 4.-0, is gearing higher.
I had the same situation with my 4.10 ‘99 Dodge dually.
I put in a Gear Vendors overdrive, so I still have my 4.10s for when I’m heavy but I hit the button and it’s 3.20. My 60 MPH RPM goes from a bit under 2000 down to a bit under 1500.
If your truck is 4WD the cost is similar. If you have 2WD and only have to change out the rear differential, it’s a lot cheaper to re-gear.
If you consider the overdrive, pay no attention to Gear Vendors wild claims of MPG improvements. It won’t make much difference at all, not will it ever pay for itself.
It does make the truck a lot more pleasant to drive. You’re not always wanting to shift up one more time like you do with 4.10 gears. That’s what you buy it for.
I had the same situation with my 4.10 ‘99 Dodge dually.
I put in a Gear Vendors overdrive, so I still have my 4.10s for when I’m heavy but I hit the button and it’s 3.20. My 60 MPH RPM goes from a bit under 2000 down to a bit under 1500.
If your truck is 4WD the cost is similar. If you have 2WD and only have to change out the rear differential, it’s a lot cheaper to re-gear.
If you consider the overdrive, pay no attention to Gear Vendors wild claims of MPG improvements. It won’t make much difference at all, not will it ever pay for itself.
It does make the truck a lot more pleasant to drive. You’re not always wanting to shift up one more time like you do with 4.10 gears. That’s what you buy it for.
