Your donations help keep this valuable resource free and growing. Thank you.
|
4-speed swap.. |
Post Reply |
Author | |
sst390
AMC Fan Joined: Jul/25/2007 Location: New Jersey Status: Offline Points: 5 |
Post Options
Thanks(0)
Posted: Jul/26/2007 at 8:42am |
I Need Advise.....please help!
I'm looking to convert my 71 Hornet 6 cyl auto, to an 8cyl manual trans. I've got the engine and steering column, but need everything else for the manual trans swap. The V/8 bellhousing,clutch fork,trans crossmember/mount, all seem pretty universal (I think), but I the real concern for me lies with the pedal assy and Z-bar. Will these parts interchange between Gremlin and Jav/AMX too, or do I need to strictly stay with small bodied car parts? I have 68-74 Javelin pedal assy, and access to a Z-bar from a 74 javelin, can these parts work on the 71 Hornet, or do I need to focus on getting pedals/Z-bar strictly from Gremlin/Hornet? I want to do this right with as little modification as possible.
I also would like to eventually put a T-10 in the car, but because of financial restraints I think I'll have to start with a 3-speed manual. My question here is after the swap is completed with the 3-speed manual trans installed, would I eventually be able to just pull out T-14 (3 speed trans) and slide in T-10 (4 speed), or is there a spline difference on input shafts between the two transmissions? And if I change from a 3 to 4 speed on car, how would the location of shifter change inside car? How much additional cutting either forward or backward of trans hump is required?
I know this a pretty loaded question(s), but I really appricate any advise you experts could offer. Thanks a bunch...Rob
|
|
javelinjeff
AMC Fan Joined: Jul/15/2007 Location: California Status: Offline Points: 8 |
Post Options
Thanks(0)
|
well first of all the t-14 is a six cyl trans,you would be better off finding a t-10,also the t-14 uses a shorter input shaft so you would need a 6 cyl bellhousing from a 72-up car(starter location&bolt holes same as v-8).also the v-8 bellhousing is usually not drilled for anything but the t-10(to the best of my knowledge).i discovered all this many years ago when i wanted to put a 4 speed in a 6 cyl javelin 20 years ago.the v-8 trans had a longer input shaft and would not fit.also your engine crossmember will need to be changed or you will need special motor mounts to use your 6 cyl crossmember(i've seen them for hornet/gremlin frames).also you will need to change rear ends too as the v-8 cars used the model 20 rear while your 6 has the model 15 rear end.also i advise changing front spindles and hubs as the v-8 stuff was bigger also(at least on javelins).i'm in the same boat as you with a 69 javelin with a 6 and it basically requires gutting the whole undercarriage and replacing with v-8 stuff---one of the mistakes AMC did,using totally different stuff on various engine sizes,unlike a Chevy that used interchangeable parts between 6 cyl & 8 cyl cars.
|
|
Wrambler
AMC Addicted Joined: Jul/02/2007 Location: West Virginia Status: Offline Points: 4197 |
Post Options
Thanks(0)
|
I wouldn't be so quick to doom the AMC15. Sure, I'd put it on the list of things to be done. But I wouldn't be in a big hurry.
Mine has stood up to considerable abuse behind a 4.0L, T5, combo. I'm running 255/60/15's too.
Front spindles are only different when going to the Matador. V8s did get bigger brakes.
|
|
Wrambler
69 AMC Rambler 4.0L, 5 speed 2015 Grand Cherokee Limited 2019 Chrysler 300 |
|
purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16591 |
Post Options
Thanks(0)
|
Well I have a factory V-8 Gremlin that has a factory installed T-14................and now have a 360 T-14 combo!
|
|
javelinjeff
AMC Fan Joined: Jul/15/2007 Location: California Status: Offline Points: 8 |
Post Options
Thanks(0)
|
are you sure it's not a t-15? my 6 cyl t-14 was shorter than the t-10,maybe the later cars(grems & horns) used the short t-14's behind the 304's,,,,what is the length of the input shaft?
Edited by javelinjeff - Aug/01/2007 at 4:32pm |
|
purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16591 |
Post Options
Thanks(0)
|
The bellhousing is the 6 1/2 one.......the 1971 Javelin with a 304 3 spd has the same set up as the 1972 Gremlin 304 3 spd......T-14....Just looked in the 1974 TSM V-8 Gremlins used the T-14 in 1974.....1975 V-8 Gremlins use the 150T.......Looked in the 1975 TSM......in 1976, V-8 Gremlins use the 150T. (1976 is the last year for V-8 Gremlins)......the T-10 is longer than the T-14. (I don't have a 1973 TSM or a 1978 TSM) (I have the 1972,'74,'75,'76,'77,&'79 TSM's) very good information!
|
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |