| Author | Message | ||
| Peter Kent (Henisland)
Registered Member Username: Henisland Post Number: 8 Registered: 9-2005 Posted From: 70.168.202.92 Rating: N/A |
I am changing out original 555 cummins to 6v92 silver with 747HT 4 spd. Need to change out rear pumpkin to 3.21 or 3.42 It is a 14 bolt Rockwell. Anyone know where I can find this gearset/pumpkin. Bus is in Missouri, I am in Florida. Thanks Pete | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 1240 Registered: 8-2006 Posted From: 184.10.191.147 Rating: N/A |
You can get the gear set from Pro Gear in Orlando FL or Global Gear in Houston Tx but I think it will be a 3:36 good luck (Message edited by luvrbus on August 20, 2011) | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 1580 Registered: 10-2006 Posted From: 76.214.45.168  Rating: N/A |
Replacing a 4 stroke with a 2 stroke usually requires more rpm at cruise. What will be your target RPM at 50, 60,70mph? FF | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 1241 Registered: 8-2006 Posted From: 184.10.191.147 Rating: N/A |
He shouldn't have a problem the 6v92 loves a 3:36 and the triple nickle Cummins was a 2400 to 3300 rpm engine the gutless wonder of the world he probably has a gear in the 4:xx or lower for the 555 to low for a 6V92 good luck (Message edited by luvrbus on August 21, 2011) (Message edited by luvrbus on August 21, 2011) | ||
| Tom Christman (Tchristman)
Registered Member Username: Tchristman Post Number: 327 Registered: 1-2006 Posted From: 66.218.33.156 Rating: N/A |
Instead of changing out the rear end, you could exchange the HT740 for a HD4060 or B500 that has a .74 and .64 rear end ratio. Would work well with the 4.xx ratio you have now. Good Luck, TomC |