Shout out too all your help and Randys Ring and Pinnion and CCOR!

[h0wl0ngcanitbe]

After a very long process of you guys helpin me out to help decide on what gears to run, ccor hookin me up, and randys ring and pinnion instaling them. i now have a truck that runs! i mean whoa! who knew proper gearing could make such a difference, i can actually go 70 miles an hour. and my rpms went from like 2800 at maybe 65, to like 1900 at 70+. gotta thank all of yall that gave me advice on what needed to be done. hopefully no more blown trannys for me! once again and as always you guys rock!

 

[AJMBLAZER]

Congrats man.

 

[buffblazer]

i cant remember what gears did you have and what did you upgrade to?

 

[AJMBLAZER]

He's at 4.56's now...think it was 3.08's or something originally.

 

[buffblazer]

wouldnt that raise his rpms instead of lower them?

that is unless those 3.08's and 35 inch tall tires were keeping him from going into OD at 65
and he was reading 2800 in 3rd gear

 

[lectric80]

Even that wouldn't make sense, mine with a T350 and 3.08's turns 2300 RPM's aprox, at 70 MPH. That is with 33's and the larger tires he has should result in even lower numbers on his, so it's like he wasn't even getting out of second.

 

[h0wl0ngcanitbe]

i dont know what was up but here was my setup,they said i had 3:07 gears but it sounds like you all are sayin 3:08 guess it doesnt make much of a diff. i got a 350, hooked to a 700r4 spinnin 35" times, with my old setup the 700 would hunt back and forth between od and the rpms would be insanely high like almost pushin 3k and that caused 3 burn ups and i said enough! found this site got me a membership started a thread and was told too go too 4:56 which works out on the calculator and in real life resulted in a much lower rpm at anything above 40.

:edit this is the gear ratio calculator i used

http://www.grimmjeeper.com/gears.html

 

[lectric80]

Are you reading the RPM's at the speed shown on the speedo? If so that would definitely have an effect, if the speedo wasn't corrected. On mine the speedo reads 45 MPH when I am actually moving at 70 MPH. So if my speedo said 70 MPH I would be closer to 100 MPH. We are just trying to understand the numbers, since as I said, the numbers seem backwards from what they should be for those gears and those tires.

 

[h0wl0ngcanitbe]

ya i had a freind run along side me with a walkie and verfied my rpms at different speeds. as for the old numbers its tough to say i could only say that i know the flow of traffic in the areas that i used to run on the freeway and as best as i could tell my rpms were sky high goin 60 with the tranny huntin back in forth from od

 

[lectric80]

Well, something doesn't add up, since we had effectively the same gears and the only difference was you have bigger tires and OD. Both of those things should have resulted in much lower RPM's than you are getting. But, I am happy you got it going right.

 

[h0wl0ngcanitbe]

x2!