Print Page | Close Window

79 Concord 4 speed

Printed From: TheAMCForum.com
Category: The Garage
Forum Name: Transmission & Drivetrain
Forum Description: If it's between the engine and wheels, it goes here
URL: https://theamcforum.com/forum/forum_posts.asp?TID=107600
Printed Date: Nov/24/2020 at 7:58pm
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com


Topic: 79 Concord 4 speed
Posted By: matty 401
Subject: 79 Concord 4 speed
Date Posted: Sep/22/2020 at 7:48pm
looking for a clutch for my son's Concord  has anybody put the 4.0 set up  in one and used the regular linkage  you can get a flywheel and clutch kit for the 4.0 that should bolt up to the 258 and the spline count is the same on the trans 

-------------
72 matador 401 the beast
79 concord 2 door
72 matador 304 grasshopper
68 Rogue 360
93 Cherokee 2wd 4.0 5 speed



Replies:
Posted By: tomj
Date Posted: Sep/22/2020 at 11:00pm
It's not clear what you are asking for. What transmission? Is this a replacement for an existing setup? Research on a new installation? 



-------------
1961 roadster american, 195.6 OHV, T5
1968 american, 199ci, T14
AMC pages: http://www.sr-ix.com/AMC/



Posted By: matty 401
Date Posted: Sep/23/2020 at 5:54am
looking for a clutch it is a factory 4 speed car 



-------------
72 matador 401 the beast
79 concord 2 door
72 matador 304 grasshopper
68 Rogue 360
93 Cherokee 2wd 4.0 5 speed


Posted By: farna
Date Posted: Sep/25/2020 at 6:35am
The four speed in a 1979 is an SR-4 and was barely adequate for a 258 six. It was used behind a 304 in the Spirit AMX (only in Spirit body, and I think only AMX... but may be wrong there), but really wasn't strong enough for ANY horse-play at all. I've seen a few worn out SR-4s in Spirits with 258s in them, though they are rather high mileage (80-100+K.. not high mileage for today's cars, but was back then). Those cars had been fairly abused by youngsters though. If it was driven normally and only abused on occasion it should be... adequate. I wouldn't put a 4.0L in front of one though. If you do a 4.0L swap you need a WC T-5 or the BA10/5 (which is fine for a light street car, barely adequate for a truck... close to the strength of the WC T-5, stronger than a Non WC T-5) or AX-15 (strongest!) that came with the 4.0L.


-------------
Frank Swygert


Posted By: Buzzman72
Date Posted: Sep/25/2020 at 9:14am
Originally posted by farna farna wrote:

The four speed in a 1979 is an SR-4 and was barely adequate for a 258 six. It was used behind a 304 in the Spirit AMX (only in Spirit body, and I think only AMX... but may be wrong there), but really wasn't strong enough for ANY horse-play at all. I've seen a few worn out SR-4s in Spirits with 258s in them, though they are rather high mileage (80-100+K.. not high mileage for today's cars, but was back then). Those cars had been fairly abused by youngsters though. If it was driven normally and only abused on occasion it should be... adequate. I wouldn't put a 4.0L in front of one though. If you do a 4.0L swap you need a WC T-5 or the BA10/5 (which is fine for a light street car, barely adequate for a truck... close to the strength of the WC T-5, stronger than a Non WC T-5) or AX-15 (strongest!) that came with the 4.0L.

I agree. I was a parts manager in an AMC dealer in 1979-80 and we had to replace a SR-4 behind a 304 in a '79 AMX under warranty. Factory service rep wasn't happy, but it happened. Yes, that transmission was marginal behind a strong 258.


-------------
Buzzman72...void where prohibited, your mileage may vary, objects in mirror may be closer than they appear, and alcohol may intensify any side effects.


Posted By: 6768rogues
Date Posted: Sep/25/2020 at 11:25pm
I have a 4.0 in my 66 American convertible and it has an AX15 behind it. It works well and any parts store has clutch parts.

-------------
Why Ramblers? Chicks dig 'em. Whatever it is, I can take it apart.
Located near Rochester, NY


Posted By: kenoshakicker
Date Posted: Sep/26/2020 at 4:05am
IMHO I think he is asking if a clutch kit for a 4.0 will work with his son's factory 258 4 speed car.


Posted By: matty 401
Date Posted: Sep/26/2020 at 9:08am
parts store do not list a clutch kit for his 258 i went back a couple years and found a clutch for a v8 hoping that will work 

-------------
72 matador 401 the beast
79 concord 2 door
72 matador 304 grasshopper
68 Rogue 360
93 Cherokee 2wd 4.0 5 speed


Posted By: matty 401
Date Posted: Sep/28/2020 at 5:55am
is is a 3 finger style  but bolted right up  works like it should   

-------------
72 matador 401 the beast
79 concord 2 door
72 matador 304 grasshopper
68 Rogue 360
93 Cherokee 2wd 4.0 5 speed



Print Page | Close Window

Forum Software by Web Wiz Forums® version 12.03 - http://www.webwizforums.com
Copyright ©2001-2019 Web Wiz Ltd. - https://www.webwiz.net