72 Javelin - Need Yoke for 727

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   I have posted about this car in other parts of the forum for other reasons. It's a 72 Javelin SST which originally came with a 304 and presumably a 904 transmission but when I bought it had a 360 and Turbo 400 in it,  probably from a 70s Jeep. The engine is locked up so I'm replacing it with a 360 from an 89 Grand Wagoneer and a 727 transmission from another Javelin.
I need to sort out my driveshaft situation. I suspect the slip yoke that's on there now that fits the Turbo 400 will not work with the 727, is that correct? I've been looking for a complete Javelin driveshaft and yoke, but I'm leaning towards buying a new yoke and getting my current driveshaft rebuilt to work with it. There's a good driveshaft shop here in Knoxville that I've used before.

I found this on eBay, is it a good piece? The price is reasonable.

https://www.ebay.com/itm/292035250808?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=krINyn_XQcq&sssrc=2349624&ssuid=Xj3VVdfOSRe&var=&widget_ver=artemis&media=COPY

If not, can anybody point me to a good one to buy?

Thanks!

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mantonas Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Mar/21/2015 Location: Knoxville, TN Status: Offline Points: 196	Post Options Post Reply Quote mantonas Report Post Thanks(0) Quote Reply Topic: 72 Javelin - Need Yoke for 727 Posted: Jul/02/2022 at 5:03pm
	I have posted about this car in other parts of the forum for other reasons. It's a 72 Javelin SST which originally came with a 304 and presumably a 904 transmission but when I bought it had a 360 and Turbo 400 in it, probably from a 70s Jeep. The engine is locked up so I'm replacing it with a 360 from an 89 Grand Wagoneer and a 727 transmission from another Javelin. I need to sort out my driveshaft situation. I suspect the slip yoke that's on there now that fits the Turbo 400 will not work with the 727, is that correct? I've been looking for a complete Javelin driveshaft and yoke, but I'm leaning towards buying a new yoke and getting my current driveshaft rebuilt to work with it. There's a good driveshaft shop here in Knoxville that I've used before. I found this on eBay, is it a good piece? The price is reasonable. https://www.ebay.com/itm/292035250808?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=krINyn_XQcq&sssrc=2349624&ssuid=Xj3VVdfOSRe&var=&widget_ver=artemis&media=COPY If not, can anybody point me to a good one to buy? Thanks!
	1972 AMC Javelin SST 1973 AMC Ambassador 401 1975 AMC Pacer D/L 1976 AMC Pacer X 1976 AMC Matador sedan 1978 AMC Pacer V8 coupe 1987 Jeep Grand Wagoneer

mstrcrftr Members Profile Send Private Message Find Members Posts Add to Buddy List Supporter of TheAMCForum Joined: Jul/12/2010 Location: houston Status: Offline Points: 2066	Post Options Post Reply Quote mstrcrftr Report Post Thanks(0) Quote Reply Posted: Jul/02/2022 at 5:14pm
	i seem to remember someone saying that the amc and chrysler transmissions were the same on the inside but different slightly on the outside.. i am sure some one here has that information and the yoke you are looking for..

mantonas Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Mar/21/2015 Location: Knoxville, TN Status: Offline Points: 196	Post Options Post Reply Quote mantonas Report Post Thanks(0) Quote Reply Posted: Jul/02/2022 at 7:05pm
	As far as I know the only difference is the AMC engine bolt pattern on the bellhousing part of the case so it mates up with AMC engines. I think the splined output shaft and the extension housing bushing are the same so any 727 yoke should fit but I just want to be sure before I buy one.
	1972 AMC Javelin SST 1973 AMC Ambassador 401 1975 AMC Pacer D/L 1976 AMC Pacer X 1976 AMC Matador sedan 1978 AMC Pacer V8 coupe 1987 Jeep Grand Wagoneer

mantonas Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Mar/21/2015 Location: Knoxville, TN Status: Offline Points: 196	Post Options Post Reply Quote mantonas Report Post Thanks(0) Quote Reply Posted: Jul/03/2022 at 9:19pm
	I have a suspicion that a yoke from a bunch of later model Jeeps (Grand Cherokees) or Dodge trucks with 727 derivative transmissions might work. If that's true I can just grab one from the junkyard. Can anyone confirm this?
	1972 AMC Javelin SST 1973 AMC Ambassador 401 1975 AMC Pacer D/L 1976 AMC Pacer X 1976 AMC Matador sedan 1978 AMC Pacer V8 coupe 1987 Jeep Grand Wagoneer

mantonas Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Mar/21/2015 Location: Knoxville, TN Status: Offline Points: 196	Post Options Post Reply Quote mantonas Report Post Thanks(0) Quote Reply Posted: Jul/06/2022 at 5:52am
	bump
	1972 AMC Javelin SST 1973 AMC Ambassador 401 1975 AMC Pacer D/L 1976 AMC Pacer X 1976 AMC Matador sedan 1978 AMC Pacer V8 coupe 1987 Jeep Grand Wagoneer

1948kaiser Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Jan/25/2015 Location: south west flor Status: Offline Points: 834	Post Options Post Reply Quote 1948kaiser Report Post Thanks(0) Quote Reply Posted: Jul/06/2022 at 6:47am
	how many splines in the yoke?

mantonas Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Mar/21/2015 Location: Knoxville, TN Status: Offline Points: 196	Post Options Post Reply Quote mantonas Report Post Thanks(0) Quote Reply Posted: Jul/11/2022 at 4:39pm
	The transmission is in the shop right now, when I pick it up later this week I will count the splines.
	1972 AMC Javelin SST 1973 AMC Ambassador 401 1975 AMC Pacer D/L 1976 AMC Pacer X 1976 AMC Matador sedan 1978 AMC Pacer V8 coupe 1987 Jeep Grand Wagoneer

mantonas Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Mar/21/2015 Location: Knoxville, TN Status: Offline Points: 196	Post Options Post Reply Quote mantonas Report Post Thanks(0) Quote Reply Posted: Jul/14/2022 at 9:40am
	I got my transmission back and counted the spines in the output shaft - 30
	1972 AMC Javelin SST 1973 AMC Ambassador 401 1975 AMC Pacer D/L 1976 AMC Pacer X 1976 AMC Matador sedan 1978 AMC Pacer V8 coupe 1987 Jeep Grand Wagoneer

401MATCOUPE Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: May/20/2010 Location: Salisbury, MD Status: Offline Points: 5367	Post Options Post Reply Quote 401MATCOUPE Report Post Thanks(0) Quote Reply Posted: Jul/14/2022 at 8:17pm
	I have an new yoke (727 for AMC) that my local NAPA found for me many years ago and never used it. Just let me know if you are interested,
	Ross K. Peterson 68X,GoPac,343,AT,52A(1stCar) 68X,GoPac,390,4sp,52A 69X,GoPac,390,4sp,64A 70X,GoPac,390,4sp,87A,8 70X,GoPac,390,4sp,BBO,8 70 Jav SST,390,AT,BSO 74MatX,401,AT,Prototype 74MatX,401,AT

PROSTOCKTOM Members Profile Send Private Message Find Members Posts Add to Buddy List Supporter of TheAMCForum Joined: Jun/20/2010 Location: Indiana Status: Offline Points: 2450	Post Options Post Reply Quote PROSTOCKTOM Report Post Thanks(0) Quote Reply Posted: Jul/14/2022 at 8:55pm
	You'll want to decide what size U-joint you want for the 727 yoke. They were and are available in several different sizes. Tom Edited by PROSTOCKTOM - Jul/16/2022 at 12:35pm
	Molnar Technologies Full Service Dealer - Crankshafts & Connecting Rods 1969 AMC Rambler Rouge Race Car 1974 AMC Hornet Hatchback, Wally Booth Outlaw Nostalgic Pro Stock Race Car Project