dropshot1
Well-Known Member
Can anyone tell me if it would be cheaper to buy and have installed a 3:91 ring and pinion and a sure grip in my 721 case or buy the pumpkin already assembled
It's probably cheaper to have gears installed in your case.Can anyone tell me if it would be cheaper to buy and have installed a 3:91 ring and pinion and a sure grip in my 721 case or buy the pumpkin already assembled
Finding an operational unit should be cheaper depending on condition.
Plus, you can always switch out units back and forth.
I would have to agree if you can find a good one with the gear ratio you want.Finding an operational unit should be cheaper depending on condition.
Plus, you can always switch out units back and forth.
being a 741 case, you can find those pretty easily and for cheap. I'd just buy one with the 3.91s in it and then simply swamp the pumpkins in and out when you want to go cruising, no special skills or tools needed, especially if you go nonadjustable bearings on your axles..Like dropshot1, I too am looking at the price point of each option. I'm going with something in the 3.91 range, but like the current 3.23's for cruising on the highway and longer trips. I think picking up a chunk and swapping it would be ideal. But I have no idea how to actually swap them LOL! Is is as simple as taking a set-up 3.91 chunk, pulling the axles, pulling the 3.23 chunk and sticking in the 3.91? And special adjusting/tools etc?
Thanks as always!
Pat
being a 741 case, you can find those pretty easily and for cheap. I'd just buy one with the 3.91s in it and then simply swamp the pumpkins in and out when you want to go cruising, no special skills or tools needed, especially if you go nonadjustable bearings on your axles..
742s go for a tad more money but never the less, much easierI have a 742 in the Duster and think I'll got that route, i.e. find a chunk, get the 3.91's set up. Then find a local FABO member to help me swap it that first time
Remember, you dont need to look for specific chunk if your gonna have 2 any way. Could find 741 conestyle suregrip cheaper pending gear ratio.I have a 742 in the Duster and think I'll got that route, i.e. find a chunk, get the 3.91's set up. Then find a local FABO member to help me swap it that first time
Yes but you'll need to find out which pinion yoke you have. The 489s are usually large yokes as where the 742s sometimes are but normally are small yoke. That said, they do sell u joint that will let you adapt to either yoke just fine fine. Other that that, it's a direct swapcan you easily swap between the numbered chunks? ie can you easily swap a complete 489 on a car that has a complete 742 in it now? I am keeping my 742/3.91 but want a second chunk with something taller for the freeway like 742 or 489 with 3.23s in it.
I have a 742 in the Duster and think I'll got that route, i.e. find a chunk, get the 3.91's set up. Then find a local FABO member to help me swap it that first time