c4 transmission

cwhits · November 5th, 2008, 02:51 PM

i have a 1969 mustang with a c4 tranny and was wondering if a c4 tranny from a 1979 mercury zephyr would work with my car.
thanks!

MustangMatt96GT · November 5th, 2008, 05:20 PM

yes, the imput spline is the same and everything!

Difference is only how the tranny is filled... some are case filled and some are pan filled... 64.5-69 are case filled

Katen · November 6th, 2008, 01:10 AM

actually no it wont. the bell housing is different thicker and some of the bolt holes don't line up.

MustangOne · November 6th, 2008, 09:06 AM

Ok the bell housing of a 1966 and up 289,302,351C,351W are all the same 6 bolt and will mount all the same transmissions. The only thing you have to look out for is at 1979 or 80 the Fly wheel is larger 164 tooth instead of the 157 tooth. and went to 50 oz balance, instead of the old 28 oz. you can buy a 50 oz 157 tooth fly wheel.

And if you have one out of a colum shift zepher the shifter arm on the trans will be diffrent but can be modified.

IDK what Katen is talking about, "pft if I know".

cwhits · November 6th, 2008, 01:39 PM

thanks for the input everyone and i didnt pull the tranny the guy is selling a c4 from a mercury zephyr so i dont know if it was colum or floor.

MustangMatt96GT · November 6th, 2008, 02:27 PM

Originally Posted by MustangOne

Ok the bell housing of a 1966 and up 289,302,351C,351W are all the same 6 bolt and will mount all the same transmissions. The only thing you have to look out for is at 1979 or 80 the Fly wheel is larger 164 tooth instead of the 157 tooth. and went to 50 oz balance, instead of the old 28 oz. you can buy a 50 oz 157 tooth fly wheel.

And if you have one out of a colum shift zepher the shifter arm on the trans will be diffrent but can be modified.

IDK what Katen is talking about, "pft if I know".

Was gioing to say that, but for a First post guy that would never show up again i thought I would wait to see if he came back...

cwhits · November 6th, 2008, 05:40 PM

ha ive been a member for quite a few months but usually all my questions are awnsered from reading old posts so i never posted

MustangMatt96GT · November 6th, 2008, 11:01 PM

sounds good! Lots of good info here!

November 5th, 2008, 02:51 PM	#1
cwhits Newbie Join Date: Jun 2008 Posts: 17 iTrader: 0 reviews	c4 transmission i have a 1969 mustang with a c4 tranny and was wondering if a c4 tranny from a 1979 mercury zephyr would work with my car. thanks!

November 5th, 2008, 05:20 PM	#2
MustangMatt96GT Proud American 1996 Mustang GT Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,690 iTrader: 3 reviews	yes, the imput spline is the same and everything! Difference is only how the tranny is filled... some are case filled and some are pan filled... 64.5-69 are case filled __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions 25.3 SFI Chassis Build Never Lift Racecars

November 6th, 2008, 09:06 AM	#4
MustangOne Lost in the 60's 1968 GT 500 Super Snake 12.6 @ 114.3 Join Date: Mar 2008 Location: Sapulpa Oklahoma Posts: 2,052 iTrader: 0 reviews	Ok the bell housing of a 1966 and up 289,302,351C,351W are all the same 6 bolt and will mount all the same transmissions. The only thing you have to look out for is at 1979 or 80 the Fly wheel is larger 164 tooth instead of the 157 tooth. and went to 50 oz balance, instead of the old 28 oz. you can buy a 50 oz 157 tooth fly wheel. And if you have one out of a colum shift zepher the shifter arm on the trans will be diffrent but can be modified. IDK what Katen is talking about, "pft if I know". __________________ MustangOne's Car's How to post Photos in Your Thread. Vote for your Favorite Ride of the month, Every Month Modded Mustangs Facebook Last edited by MustangOne; November 6th, 2008 at 09:08 AM.

November 6th, 2008, 11:01 PM	#8
MustangMatt96GT Proud American 1996 Mustang GT Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,690 iTrader: 3 reviews	sounds good! Lots of good info here! __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions 25.3 SFI Chassis Build Never Lift Racecars

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November 6th, 2008, 01:10 AM	#3
Katen Regular 1973 Coupe Mustang as fast as the restoration is going Join Date: Jan 2007 Location: Defiance, Ohio Posts: 142 iTrader: 0 reviews	actually no it wont. the bell housing is different thicker and some of the bolt holes don't line up.

November 6th, 2008, 01:39 PM	#5
cwhits Newbie Join Date: Jun 2008 Posts: 17 iTrader: 0 reviews	thanks for the input everyone and i didnt pull the tranny the guy is selling a c4 from a mercury zephyr so i dont know if it was colum or floor.

November 6th, 2008, 05:40 PM	#7
cwhits Newbie Join Date: Jun 2008 Posts: 17 iTrader: 0 reviews	ha ive been a member for quite a few months but usually all my questions are awnsered from reading old posts so i never posted

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