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4 speed conversion question (update) #67610 06/04/08 06:35 PM 06/04/08 06:35 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	What has to be done to a (440 automatic) crank in order to make it 4 speed compatible? Thanks, Mike Last edited by Big Mike; 07/05/08 07:50 PM.

Re: 4 speed conversion question #67611 06/04/08 06:47 PM 06/04/08 06:47 PM
Joined: Oct 2005 Posts: 9,065 Milwaukee, WI In_The_Pink master
In_The_Pink master Joined: Oct 2005 Posts: 9,065 Milwaukee, WI	It needs to be drilled out to accept a bushing or bearing like this:

Re: 4 speed conversion question [Re: In_The_Pink] #67612 06/04/08 06:55 PM 06/04/08 06:55 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	Quote: It needs to be drilled out to accept a bushing or bearing like this: Drilling may can be necessary but many auto cranks were set up for a 4 speed at the factory. Is it a BB or a SB? Can you post a picture of the end of the crank - that would help tell. Another option is to use a bearing that fits into the torque convertor pilot and shorten (if necessary) the transmission input shaft.

Re: 4 speed conversion question [Re: ahy] #67613 06/04/08 07:00 PM 06/04/08 07:00 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Sorry, i forgot to mention that it's a 440 from a 68 imperial. The motor has already been rebuilt and i wanted to keep my 64 a pushbutton auto, but i started playing with the idea of making it a 4 speed. I heard that drilling was necessary but was hoping it was not so involved.

Re: 4 speed conversion question #67614 06/04/08 07:04 PM 06/04/08 07:04 PM
Joined: Nov 2005 Posts: 15,118 85086 moparpollack Lil Herman
moparpollack Lil Herman Joined: Nov 2005 Posts: 15,118 85086	You can always cut the input shaft. 56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d

Re: 4 speed conversion question [Re: moparpollack] #67615 06/04/08 07:08 PM 06/04/08 07:08 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	There's a good chance it is already set up for 4 speed - may even have the bronze bushing in place dirty but unworn.

Re: 4 speed conversion question [Re: ahy] #67616 06/04/08 07:11 PM 06/04/08 07:11 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	I'll have to take a picture next time i'm at the shop. Could you tell from that?

Re: 4 speed conversion question [Re: ahy] #67617 06/04/08 07:15 PM 06/04/08 07:15 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Quote: There's a good chance it is already set up for 4 speed - may even have the bronze bushing in place dirty but unworn. They can be setup for an auto and manual together?

Re: 4 speed conversion question #67618 06/04/08 08:06 PM 06/04/08 08:06 PM
Joined: Oct 2005 Posts: 9,065 Milwaukee, WI In_The_Pink master
In_The_Pink master Joined: Oct 2005 Posts: 9,065 Milwaukee, WI	The pic I posted is of my '77 360 which came with a factory 727. The crank was already drilled, so all I had to do was add the bearing, as shown. Keep your that your 440 crank is, too.

Re: 4 speed conversion question #67619 06/05/08 01:07 AM 06/05/08 01:07 AM
Joined: Jan 2003 Posts: 8,089 Sorrento, BC, Canada 4speeds4me master
4speeds4me master Joined: Jan 2003 Posts: 8,089 Sorrento, BC, Canada	Quote: Quote: There's a good chance it is already set up for 4 speed - may even have the bronze bushing in place dirty but unworn. They can be setup for an auto and manual together? I pulled a 383 from a 68 Newport years ago...original engine. Went to put a bushing into it for my roadrunner and there was already one there...dirty and unused, but there. Yours stands alot more chance of beeing drilled being a 68 than if it was a later 70's unit, in my experience. If it's drilled to depth and not finish drilled to size (and many were this way) an SKF B287 fits into the torque converter register and takes care of the bushing issue for you. As previously mentioned, circumcise the input if you have to. 2 Demons...no, not my kids!

Re: 4 speed conversion question [Re: 4speeds4me] #67620 06/05/08 01:56 AM 06/05/08 01:56 AM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	Even if it's not drilled, they make a bearing for use with an undrilled crank, just sits where the torq converter does, like said above. Then you have to trim the input shaft shorter to make up for the crank not being drilled as deep.

Re: 4 speed conversion question [Re: DaytonaTurbo] #67621 07/05/08 07:49 PM 07/05/08 07:49 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	I checked my crank and it is drilled almost 2 inches deep

Re: 4 speed conversion question #67622 07/05/08 09:48 PM 07/05/08 09:48 PM
Joined: Jan 2003 Posts: 74,947 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 74,947 U.S.S.A.	Quote: I checked my crank and it is drilled almost 2 inches deep thats the first step , now the question is it it reamed to size ? the plus is you shouldn't have to cut the input shaft if its not fully reamed to size , just use the pilot bushing setup that goes in the convertor register

Re: 4 speed conversion question [Re: JohnRR] #67623 07/05/08 10:03 PM 07/05/08 10:03 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	NM i answered my own question. Last edited by Big Mike; 07/05/08 10:11 PM.

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