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#1 |
69 c/10 lwb fleetside
Join Date: Jul 2004
Location: saint joseph TN
Posts: 195
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3 speed to 4 speed od switch few ?ss
ok i have finally saved up a little money and am thinking about putting the 4 speed od MY6 trans from the 80s chevy trucks in my 69 in hopes for better gas mileage. from what i have heard its a direct bolt up from my old 3 speed. my questions are what else will i need to make this swap a sucess. i need to get the shifter and linkage with the trans right? what about driveshafts will i need a different one? i hope i can find one around for a decent price.
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69 lwb fleetside ![]() 67 swb fleetside ![]() (2) 72 lwb fleetside 50 swb no bed ![]() 65 impala ss ![]() 65 1 ton flatbed ![]() |
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#2 |
Senior Member
![]() Join Date: Feb 2011
Location: Corona, CA
Posts: 1,840
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Re: 3 speed to 4 speed od switch few ?ss
The main thing is to get a complete unit; shifter, rods and transmission. Correct bell housing if you need it.
Here are two articles and one link to a tranny without the shifter.... http://www.classicjunkyard.com/new_process_a833.htm http://www.customclassictrucks.com/t...n/viewall.html http://raleigh.craigslist.org/pts/2906324833.html
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MusicMan70 1961 GMC Suburban |
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#3 |
69 c/10 lwb fleetside
Join Date: Jul 2004
Location: saint joseph TN
Posts: 195
|
Re: 3 speed to 4 speed od switch few ?ss
what about driveshaft lenghts will the one i have now still work or have to get a different one?
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69 lwb fleetside ![]() 67 swb fleetside ![]() (2) 72 lwb fleetside 50 swb no bed ![]() 65 impala ss ![]() 65 1 ton flatbed ![]() |
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#4 |
Senior Member
![]() Join Date: Feb 2011
Location: Corona, CA
Posts: 1,840
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Re: 3 speed to 4 speed od switch few ?ss
I believe the OD my6 is the same length as a Turbo 350; short 6" version. If that's what you are replacincing then it should bolt right up. Double check all this of course. I replaced an SM420 so it required a longer drive shaft and a different input shaft.
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MusicMan70 1961 GMC Suburban |
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