Question about Jeep CJ7

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Have a 1979 cj7 cant find a flywheel with right bolt pattern the motor is a amc 360 but a flywheel from a 360 has a differnt bolt pattern than mine any help please

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You don't have the right flywheel. All 72-91 AMC V-8 flywheels will bolt up. Note that AMC V-8s are balanced by a weight on the flywheel, so you MUST have a flywheel for the engine size you have or it will eat up the bearings. Kennedy American has flywheels, buy the one you need.

Posted on Jan 07, 2015

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Are you sure you have an amc 360 and not a 304 and also are you sure the flywheel came from an amc 360 and not a chevy 350? A 350 will bolt directly in place of the 360. You might also try a 350 flywheel.

Posted on May 10, 2009

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1 Answer

My 82 el camino with an automatic transmission i cant bolt the flywheel from the 5.7LG i noticed the flywheels are different bolt patterns and sizes also different ones 13in. And the other is 14in.


automatic... do you mean a drive plate

wont work
you fit the same transmission for the vehicle

you do motor swap and transmission together


26368752-oydhff2wv5m2cmufjzh4trah-1-0.jpg

Nov 23, 2016 | Cars & Trucks

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What transmission is the 4-speed in a CJ7


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May 19, 2012 | 1985 Jeep CJ7

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I am replacing the starter on my 350 chevy motor, in a 1984 cj7. I took the starter out, purchased new, and can not get the bolt holes to line up


on Chevy small blocks there only two bolt patterns one with off set holes and one with straight across bolt holes
i ran across this same problem a while ago starter that was suppose to fit my motor according to part stores was the offset bolt pattern but motor actually had straight across bolt pattern i had to go back to i think like a 1969 motor to get straight across bolt pattern even but i know motor wasn't that old

if you have the correct bolt pattern make sure the starter not hitting on something (frame, headers, tranny lines etc.) if clearance is the issue you might need to go with a smaller starter (they work just as well but the starter motor it self is smaller in diameter) the smaller starter might not have as much power as the bigger one but shouldn't be a problem as long as your not running a extremely high compression motor

(the following is untested by my self but good friend that drag races says it true)
My friend Drag race car uses a starter off a 4.3L Chevy vortex motor( 6 cyl motor found in blazers, S10 etc) And it turns over his High compression drag race small block and gives him the clearance he needs.

Feb 26, 2011 | Jeep CJ7 Cars & Trucks

1 Answer

Jeep CJ 7 problems Dana 30 and AMC 20


gear ratio on 4 wheel drives are matched up together so that one does not push or drag the other if you change one it will affect the other

Feb 25, 2010 | 1983 Jeep CJ7

2 Answers

Cj7 rear


Jeep Axle: AMC 20
amc20_.jpg
Front Axles
Dana 44
Dana 30
Dana 27
Dana 25


Rear Axles
Chrysler 8.25"
Dana 35c
AMC 20
Dana 30
Dana 60
Dana 53
Dana 44
Timken
Dana 41
Dana 23


Jeep Axles
Upgrades
Factory Options
General


-->All AMC 20s have a 8 7/8" R&P and use a 29 spline shafts. The AMC 20 R&P is 3/8" bigger than the Dana 44, but it uses smaller shafts, smaller axle tubes, and the CJ version comes with weaker two piece shafts. The AMC20 uses a 29 spline shaft where as the later Dana 44 uses a 30 spline shaft. The AMC 20 housing tends to flex a lot which can cause breakage. This can be remedied by welding the tubes and/or adding gussets. The reason the AMC 20 flexes more than the Dana 44 is the shorter differential housing and smaller axle tubes. It's other flaw is the CJ version uses the two piece axle made up of a hub and a shaft. The hub end tends to break off under load which has created the market for one piece AMC 20 axle shafts. Unfortunately, the shafts are expensive ($350+ USD) and in some cases a special bearing must be used.
amc20co_.gif -->Identifying the gear ratio of an AMC 20 is a bit tricky. Dana axles normally have a tag on the left of the diff cover with the gear ratio at the time of build. The AMC axles have a code that has to be looked up in a table. The code is stamped on the housing boss to the left of the diff cover right near the axle tube. Good part about the stamp is it tends to stay readable longer than the tag, but you have to know the code. Since there are conflicts between what a code means for a narrow track and what it means for a wide track, don't count solely on the code to identify an axle. Bring a tape measure or know the source of the part. Specs Narrow Track AMC 20 Code Gear Ratio Diff Type AA 2.73 Open DD 2.73 Trac-Lok BB 3.31 Open CC 3.31 Trac-Lok A 3.54 Open N 3.54 Trac-Lok GG 3.73 Open Q 3.73 Trac-Lok L 4.10 Open M 4.10 Trac-Lok Wide Track AMC 20 Code Gear Ratio Diff Type D 2.73 Open DD 2.73 Trac-Lok B 3.31 Open BB 3.31 Trac-Lok A 3.54 Open AA 3.54 Trac-Lok H 3.73 Open HH 3.73 Trac-Lok C 4.10 Open CC 4.10 Trac-LokThe Trac-Lok is a limited slip differential. You may have to scrape away a lot of mud, paint, and rust to uncover the code. If you can't find the code on the rear, check the tag on the front axle. Both axles should be geared the same. The R&P ratio ranges supported by the carriers are 2.73 and 3.31-5.13. The 5.13 gear ratio is not available for the Dana 30 though, so it is rare to see it. 4.56s are the lowest common ratio between the Dana 30 and AMC 20. 5.13s are available for the Dana 44.
CJ AMC 20 The CJs used two versions of the AMC 20, the narrow track from '76-'81 and the wide track from '82-'86. Both versions use keyed, two piece shaft/hub design and 5 on 5.5" wheel bolt pattern. Supplies of AMC 20s were exhausted in 1986 and some Dana 44s were used instead in the last of the CJ-7s.
From 1976-1978 a larger 11x2" drum brakes was used on the AMC 20. After 1978, a 10x1.75" drum was used.
SJ AMC 20 The Wagoneer and full size Cherokee also used a narrow and wide track version of the AMC 20. Both SJ versions used once piece shafts and 6 on 5.5" wheel bolt pattern. Since the length and bolt pattern is different from the CJ version, the SJ shafts are not compatible without resplining and redrilling. I've never heard of anyone going to the trouble.
Model/Version Spring Pads Wheel to Wheel Years AMC 20/CJ Narrow Track 36" 50.5" '76-'81 AMC 20/CJ Wide Track 36" 54.5" '82-'86 AMC 20/SJ Narrow Track AMC 20/SJ Wide Track Last modified Friday, 03-Dec-1999 21:48:34 MST
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Jun 06, 2009 | 1985 Jeep CJ7

1 Answer

4.0 in to a 84 grand wagoneer


There shouldn't be any welding involved. The 4.0 is a detuned 4.2 due to fuel injection.

Feb 25, 2009 | 2006 AMC J10

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