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Quick question on transmissions
Posted by: rlp11 ()
Date: February 26, 2018 12:25AM

Question is will a 1966-69 4sp transmission fit in a 1964 diff? I know the cross member will need work.

Roger Parent
El Cajon, CA
1964 Monza Driver
1964 Monza Project

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Re: Quick question on transmissions
Posted by: coleslaw31 ()
Date: February 26, 2018 02:08AM

Bolt pattern and pinion shaft are different

South Carolina Upstate



68 Monza convertible 140 4spd A/C (coming soon)
66 Corsa coupe 140 4spd

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Re: Quick question on transmissions
Posted by: vairmech ()
Date: February 26, 2018 04:31AM

The short answer is NO.

Will it bolt up? sort of. 4 of the bolts will start but the trans will not pull tight and if you do something will break.

If you are building the drivetrain you can shorten the pinion shaft and put the 66-9 pinion adjuster nut in and then it will bolt up with 4 of the bolts.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

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Re: Quick question on transmissions
Posted by: texas yenko dude ()
Date: February 26, 2018 05:02AM

Roger,

If it is going in a 64, I think you will have clearance issues with the front crossmember. I think Mike Levine has done this for his early coupe he is going to race. Maybe he will chime in

Texas YENKO Dude
YS-070
YS-199
YS-320
Southeast of Disorder


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Re: Quick question on transmissions
Posted by: BobV66Vair ()
Date: February 26, 2018 06:54AM

Isn't the shift linkage different as well? I recall that the shift shaft and other pieces are different due to the length of the 66 and where things connect to it.

Bob Vinnacombe
Sandy, Oregon
1965 Corsa 140 stock
1966 Monza Soon to be race car
1968 Monza Parts for now

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Re: Quick question on transmissions
Posted by: v8vair ()
Date: February 26, 2018 07:01AM

You will also have to machine/drill/grind an indention for the trans bearing retainer tab bolt in the case, you can drill for a 5th retaining bolt.check the oil cross over hole and vent to make sure they match.

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Re: Quick question on transmissions
Posted by: Wagon Master ()
Date: February 26, 2018 07:04AM

BobV66Vair Wrote:
-------------------------------------------------------
> Isn't the shift linkage different as well? I
> recall that the shift shaft and other pieces are
> different due to the length of the 66 and where
> things connect to it.


This is also an issue. If the original question is "Will it fit?"....yes it will. "Is it a bolt in swap?"....Not even close. You have to really want/need a 66-69 trans. in a early to do this.

'64 Monza Coupe 140 4 speed
'61 700 Lakewood 95 4 speed
'69 Monza Convert. 140 Auto.

Been aircooled since 1973
Northwest Ohio

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Re: Quick question on transmissions
Posted by: rlp11 ()
Date: February 26, 2018 08:52AM

Reason for asking this is I have access to quit a few transmissions. Most are 66-69. They are not free but REAL cheap. I still may get them and resell the good ones.

Roger Parent
El Cajon, CA
1964 Monza Driver
1964 Monza Project

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