So to change my 3406e from a rtlo15610b to a 13 or 18 need to redo the drive shaft as well?
Got 3.80 rears if I remember right lp 24.5 would I get any advantage upgrading?
Right now low 5's summer low 6's running at 65 close to 1600 rpm.
Sorry OP did not mean to hijack just thought since it was talked about I would ask.
swap in a 13?
Discussion in 'Trucks [ Eighteen Wheelers ]' started by rank, Mar 26, 2015.
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just gotta say, very nice truck Rank, would love to own one some day.
why would you want to get rid of that bug 15 speed? they don't make those anymore hahaha We had one in our 1990 379, we loved it.
once again, love the truckrank Thanks this. -
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Well I don't know what to do now. Some say yes some say no LOL.
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Seriously, I don't mind the 15 but I don't love revving it so much before I shift. Plus I thought I might pick up a few 1/10ths and lower the cruise rpm in the bargain.
I looked for 3 years to find this one. You may as well get one...the sooner you get one the sooner you can start saving money. They seem like alot of money but they pay for themselves with less maintenance IMO.RunFlat Thanks this. -
http://www.roadranger.com/ecm/group...er/documents/content/rr_rrsl-0001.pdf#page=16rank Thanks this. -
Well if you do 70k miles a year the difference between 6 and 6.5 mpg @ $3 a gallon is $2700.
So almost 2 years.....rank Thanks this. -
rank Thanks this.
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If anyone wants to know how to calculate these things, it's (##60)/(B*C*D)
A = engine RPMs
B = transmission ratio
C = rear end ratio
D = tire revolutions per mile (476 for 11R24.5s, 481 for 295/75R24.5s, 468 for 295/80R24.5s)
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