Re: Can you covert a 3 speed manual to a 4 speed manual
[Re: DANA60]
#943475
03/05/11 06:57 PM
03/05/11 06:57 PM
|
Joined: Jun 2007
Posts: 1,180 clarks summit pa
73cuda340
super stock
|
super stock
Joined: Jun 2007
Posts: 1,180
clarks summit pa
|
Bellhousing should be the same if its the dual bolt pattern one.
1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip,
(JA5) Silver Frost Metallic
1973 Challenger Rallye 340
1985 W150 Power Ram prospector
1986 Camaro IROC-Z 305 tpi
|
|
|
Re: Can you covert a 3 speed manual to a 4 speed manual
[Re: 73cuda340]
#943476
03/06/11 05:01 AM
03/06/11 05:01 AM
|
Joined: Mar 2010
Posts: 357 Lake Elmo, MN
Evil Monkey
enthusiast
|
enthusiast
Joined: Mar 2010
Posts: 357
Lake Elmo, MN
|
I would be surprised if it's not a dual bolt pattern bellhousing - that's why they made them, so that they didn't have to make separate bellhousings for 3 speeds and 4 speeds. If you take the 3 speed transmission out (leaving the bellhousing in) and there are 8 mounting holes, you're good. You then should be able to just put the 4 speed in, with a 4 speed shifter and shift rods, and have your driveshaft shortened to the right length. I believe the transmission yoke is different for the 3 speeds and 4 speeds also, so that will most likely need to be changed. You will also need to get 4 speed E body transmission levers. The shifter mounting bracket may be the same between the 3 speeds and 4 speeds, but I’m not sure. The shift rods from the 3 speed may be able to be used as the 1-2 and 3-4 rods on the 4 speed, but I’m not sure on that either. If they do, you would only have to get a reverse rod for the 4 speed. The best thing to do would be to test assemble the transmission, shifter, shifter bracket, levers and rods outside of the car first, and adjust the rods at that time – it’s much easier to adjust them outside the car than in the car. Then make sure the adjusters don’t spin when you disassemble it and install it in the car. The clutch, clutch linkage, Z bar, etc won't need to be changed, or even removed while you make the swap, but if the clutch, throwout bearing, and pilot bushing are old and getting worn out, you may want to replace them while you’ve got it apart.
1974 'Cuda 360/TKO
1990 Ram Van
1998 Neon
|
|
|
Re: Can you covert a 3 speed manual to a 4 speed manual
[Re: Evil Monkey]
#943477
03/06/11 05:14 AM
03/06/11 05:14 AM
|
Joined: Jan 2007
Posts: 1,668 Mi,U.S.A.
mike s
top fuel
|
top fuel
Joined: Jan 2007
Posts: 1,668
Mi,U.S.A.
|
You didn't mention which trans you have.Don't forget the bearing retainer size.The late 3 speed will have a larger one as opposed to an early (before 68-9?)4 spd trans.You can change that to match with the correct(same front bearing different retainer) trans.The all syncro 3 spd for a BB (stock in 70 up Roadrunner and more) has the large bolt pattern same as a 4 spd.I don't think they used the smaller A-250 trans that late with V-8, maybe in a six.
Leave the gun.......take the Cannoli's....Mike
|
|
|
Re: Can you covert a 3 speed manual to a 4 speed manual
[Re: kjg]
#943479
03/06/11 08:08 AM
03/06/11 08:08 AM
|
Joined: Mar 2010
Posts: 357 Lake Elmo, MN
Evil Monkey
enthusiast
|
enthusiast
Joined: Mar 2010
Posts: 357
Lake Elmo, MN
|
The kits that I've seen advertised are for converting an automatic to a four speed. They are expensive, and contain a bunch of parts that you won't need since you already have a floor shifted manual car. But they may make a kit up for you that would only contain what you need, and would be much cheaper than an auto to manual conversion kit. Brewers would be a good place to start - www.brewersperformance.comIf there are any decent Mopar swap meets in your area, though, you could save a ton of money getting what you need there. That would require waiting until the swap meet, though, so if you're dead set on doing it now, that won't work. You might also be able to find what you need on you local Craig's List, or find a person near you selling what you need on Ebay (buying locally with Craig's list or Ebay would give you the chance to inspect it before buying). You might want check out the for sale section here on Moparts too. But if you want parts that are new, or in like-new condition, Brewers would be the place to go. Their transmissions have a 12 month warranty too, so that's another thing to consider.
1974 'Cuda 360/TKO
1990 Ram Van
1998 Neon
|
|
|
Re: Can you covert a 3 speed manual to a 4 speed manual
[Re: kjg]
#943481
03/06/11 12:25 PM
03/06/11 12:25 PM
|
Joined: Jan 2003
Posts: 75,020 U.S.S.A.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 75,020
U.S.S.A.
|
Quote:
The car is a 1973 Challenger with the floor mount 3 speed Does anyone make a conversion kit
Thanx guys for all the input
You don't need a conversion kit ... trans , shifter , driveshaft .... unless you like wasting money ....
|
|
|
Re: Can you covert a 3 speed manual to a 4 speed manual
[Re: JohnRR]
#943482
03/06/11 02:05 PM
03/06/11 02:05 PM
|
Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
|
About to go away
Joined: Sep 2007
Posts: 14,889
up yours
|
Not sure you need to change the driveshaft. Maybe the slip yoke, but not the shaft.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
|
|
|
|
|