ecmoney

iTrader: (2)

Just curious guys. what kind of rpm's are yall running with 4.10's at a cruising speed.....say 60mph.

Im wondering just because i want to be sure I have 4.10s in my truck. I was told they were when i bought them but something doesnt seem right to me.
thanks

BlackGMC

iTrader: (31)

roughly 2k with a 30.6 tire...

Kerr

i have a 4L60E trans, and 4:10's i think 2300 at 60 or smoething. I know its like 2800 at 80 mph. thats with the stock 245-75-16 tires.

Now the suburban has 3:73 gears, 33. tires and its like 1800 at 60 mph

dewmanshu

iTrader: (4)

I have the 80e and in overdrive and converter locked at 80MPH with 31" tires I am at 2800RPM.

Websy21

iTrader: (34)

Stock tires in my stock 2006 seirra I am at 2k going 60mph. I also thought that had to be wrong since I thought it would be higher than that but when I looked into it I found out I had the 4.10's

cttandy

iTrader: (12)

Yeh, right around 2K at 60. Overdrive must be pretty tall.

GMCtrk

iTrader: (27)

how do you live with that? The only thing killing me about going to 4.10s is how noisy the engine will be on the highway. As it is now, I run 1500rpm @ 60mph.

dewmanshu

iTrader: (4)

I don't. I don't drive it ANYWHERE near as I used to. I have a company truck now, so my truck only sees driving time on the weekends (or nights once I am home). But, believe it not, 75mph is 2500rpm and is pretty decent. It sounds fine, besides the gas needle tends to move quick.

GMCtrk

iTrader: (27)

well I run 80 at about 2000rpm so maybe I'm a little deluded lol

viciousknid

iTrader: (8)

there's a sticky at the top of this section that will answer your question.
since rpm is going to be in relation to your tire size and transmission as well.