Performance Forums > Drivetrain
air locker
kpm:
the dana 60 posi...gear 4.56....in the 71 wide was real good...had stock 318 ind with 3 spd std.
....little hard to turn on a slick road(wants to go straight)...though once on the lake or pack trail steers fine..
kpm
the old trucker:
Dave I picked up my old diff parts yesterday & was talking about (the 59 New Build) bomber. Glen has rebuilt a V6 that is posted in his rebuild. He has 4.88 gears & thinks they are too slow. After talking to the fellow that was doing his diff, he suggested that Glen use an overdrive transmission. He says in drive it will be 1 to 1 ratio & overdrive is there when he wants to use it.
I don't understand much about it but it sounds like it may be a good setup. For me he said to get an AOD trans with the flywheel out of a Ford Crown Vic. It should bolt to my 300 Ford. I don't know of this will be any help for you.
OT.
kpm:
the overdrive trannys will not hold up in a bombardier....for any of the 3 speed automatics a shift kit is a strong IMPROVEMENT!!
KPM
dpaulson:
I have thought the 350 motor/ transmission in my old 93 chevy 1/2 would be a good combination. 350 have good horsepower and the 4 spd auto with od would give you that option when your on a good hard pack road. I just didn't want to go that route just yet being that my 318 and 727 tranny are pretty good. Maybe the 4.56 gears are alright in an industrial engine ( I understand that they have better low end torque), but I believe that my 318 came out of a 1/2 ton truck and it needs some rpm's to produce horsepower. I ran across a horsepower curve chart once (I haven't been able to find it since) and if I remember the hp at 2500 rpm is 120-130. Peek Hp (230) is at 4400 rpm. When breaking trail, I'm lucky to get 2500 rpm, and will pull down to 2000. Under 2000 rpm it really pulls down fast then where I need to shift to first gear. I can get all kinds on rpm in 1st gear, but speed is too slow that I rub snow along the belly pan which is getting close to being hung up and stuck.
the old trucker:
--- Quote from: kpm on May 26, 2011, 08:19:54 am ---the overdrive trannys will not hold up in a bombardier....for any of the 3 speed automatics a shift kit is a strong IMPROVEMENT!!
KPM
--- End quote ---
So....Kpm do I have a good combination in my machine ??? It's a 300 6 cylinder Ford with a C6 trans. the original diff is 4.11. I know very little about this... That's why I ask.
OT.
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