| Author | Message | ||
| S.M. Heath (66.82.50.1) Rating: N/A |
I have 11.00 R-20 Tires, go 50 MPH. @ 2500 (Eng.)RPM., (aprox. 487.189 Tire Rev's per Mi.) (X50 Mi.)=Aprox. 24360 Tire Rev's per 50 Mi.... 2500 (Eng Rev's) X 60(Miniutes)= Aprox. 150000 Eng. Rev's per hr.. So... My Diff. Gear Ratio is about 6.15:1. ? This seems about what I Came up with. NOTE: Trans. (Fuller 5 Manual) Is 1:1 I/O (Input to Output). Any "Knowlageable" Input on what ratio wold boost-up the Hwy. top speed To 70 MPH ? | ||
| Craig Smith (Craigs) (67.35.116.171)
Rating: N/A |
Hi, I come out with about 4.4:1. A taller tire would help somewhat if it'll fit. Craig S | ||
| RJ Long (67.181.211.253) Rating: N/A |
Try plugging various combinations into the calculator on Daris's site link below to answer your question: http://home1.gte.net/res07rfl/4106/calcmph.htm Or, you can also try the one on Mallie's site: http://www.cwis.net/~mallie/page12.html HTH, RJ PD4106-2784 Fresno CA | ||
| S.M. Heath (66.82.50.1) Rating: N/A |
Thanks RJ, for the info. Looks like 4.3:1 For final +/- 0.2or0.3 should do. I am in no hurry to spend $ I don't have but just for reference, Diff. is (I think) Rockwell...? Front Axel is "Rockwell"... No tag, only nos. are stamped on r,r axel housing faceing towards Trans.(rearward). I haven't yet sanded it enough to read. | ||
| TWO DOGS (65.177.145.103) Rating: N/A |
most big truck rear ends are 4.11 & 4.30....just replace the whole rear end....out of a junk yard..now...all you need now,more power | ||
| S.M. Heath (66.82.50.1) Rating: N/A |
T.D., 10-4 On More Power! S.M. | ||
| TWO DOGS (63.185.97.32) Rating: N/A |
think I know where a 4.30 is for 100.00 | ||
| S.M. Heath (66.82.50.1) Rating: N/A |
T.D. Or anyone, Can't I Just change the Carryer? Isen't there a Diff. that Bolts onto the Axel Housing? | ||
| S.M. Heath (66.82.50.1) Rating: N/A |
T.D., $100.00? Is that Just carryer? Or Whole "Thing" including Axel shafts? Hubs? What about Lug patterns? Brake Drums & all Those "Fine" Details? S.M. | ||
| S.M. Heath (66.82.50.1) Rating: N/A |
P.S. What about distances between Leaf Springs & Axel Fitting from "Truck" to Gillig? | ||
| Henry R. Bergman, Jr. (Henryofcj) (63.224.197.10)
Rating: N/A |
That is sooosss easy I cans do it my head. Well, nearly. Umm... let's see,... about 4.56 to aound 4.10 with about 4.33's being ideal.  | ||
| TWO DOGS (63.185.97.32) Rating: N/A |
Heath...go to the ebay board...I can go pick this up for you,sounds like JUST what you need...or,he can ship it,don't know where you are... | ||
| S.M. Heath (66.82.50.1) Rating: N/A |
I am in Mojave Ca. Area at Present time. I will look into E.Bay. Thank's. (S.M.) | ||
| TWO DOGS (63.185.80.173) Rating: N/A |
did you look up that number ??? | ||
| S.M. Heath (66.82.50.1) Rating: N/A |
T.D., I did & No Item on eBay Matches that number. is it an L.L.? | ||
| TWO DOGS (63.185.73.200) Rating: N/A |
don't know what a L.L. is...it 'was' listed & did not sell,my computer picked it up,but,can understand you wanting to just change out the center section.. | ||
| John the busboy (12.72.236.39)
Rating: N/A |
We changed a 6.14 for a 4.11. We now get 60 mph at about 2200 rpm. The tires are 504 revs/mile. And we have an automatic. i believe the theoretical revs at 60 is 2070. A side benefit of a taller drive ratio is a quieter bus. The slower running engine doesn't make as much noise. John the busboy | ||
| S.M. Heath (66.82.50.1) Rating: N/A |
T.D., L.L. (Double "L")= Land-Line (Telephone Service Via Hard-Wire.). John thebusboy, Yes Quieter + Longer Eng. life & Higher MPG on Flat-Land in High Gear. S.M. H. |