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Putting FUN and FRIENDLINESS, FIRST into owning and learning about AMC small bodied cars, primarily Eagles, Spirits and Concords as well as vehicles built in AMC's Mexican subsidiary, VAM.
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Recent posts
#51
Axle / Differential / Re: Gear Ratios
Last post by spacedust - October 02, 2025, 08:48:58 AMHey I really appreciate the responses guys. I'm not positive what I have for gears but in guessing it's 2.35 unfortunately. I don't seem to have a diff tag, is the easiest way to tell by pulling the diff cover? Or is there a way to tell visually from the outside?
#52
4X4 and Driveline / Re: V8 in SX4?
Last post by Still Pat - October 02, 2025, 07:14:29 AMThere USED TO BE a guy in Canada, ey? selling kits IF I recall correctly? I THINK his 'Nest Name' was Hyper Eagle? Terry something maybe? Some old-timer should be able to chime in, I;m going off my (LACK OF) memory from about 15(?) years ago.
#53
Axle / Differential / Re: Gear Ratios
Last post by EagleSX4_5Speed - October 01, 2025, 09:32:55 PMWhat gear ratio are you changing from?
If you have 2.72 or numerically higher you will be able to re-gear your front axle without issue. However if you have 2.35 gears like I did you will need to find another axle to re-gear. The carriers and housings are specific to the Eagle and have a different offset than the Jeep carriers. You will need an axle with at least a 2.72 gear ratio to have any success at going to 3.54 gears.
I ordered mine from rockauto as well. I got the Dana branded gears part #2020585. 3.54 gear ratio.
If you have 2.72 or numerically higher you will be able to re-gear your front axle without issue. However if you have 2.35 gears like I did you will need to find another axle to re-gear. The carriers and housings are specific to the Eagle and have a different offset than the Jeep carriers. You will need an axle with at least a 2.72 gear ratio to have any success at going to 3.54 gears.
I ordered mine from rockauto as well. I got the Dana branded gears part #2020585. 3.54 gear ratio.
#54
Axle / Differential / Re: Gear Ratios
Last post by 89 MJ - October 01, 2025, 07:52:59 PMQuote from: Taylor on October 01, 2025, 07:44:32 PMWere the Yukon gears from Rock Auto specific to the Eagle? If so what your did you specify for the order? I too would like to change my hearing.
Thanks,
Taylor
I don't think they were Eagles specific, but I did order them under an Eagle for vehicle option.
#55
Axle / Differential / Re: Gear Ratios
Last post by Taylor - October 01, 2025, 07:44:32 PMWere the Yukon gears from Rock Auto specific to the Eagle? If so what your did you specify for the order? I too would like to change my hearing.
Thanks,
Taylor
Thanks,
Taylor
#56
Axle / Differential / Re: Gear Ratios
Last post by 89 MJ - October 01, 2025, 06:25:32 PMQuote from: spacedust on October 01, 2025, 05:40:43 PMHello, I know this is an old thread but where did you buy your new gears from for the front? I have an 8.8 with 3.55 gears ready to go in the rear but trying to figure out what i need for the front is driving me crazy. I dont know if new gears will fit, or if they need to be some special long pinion version or what. if you are still out there let me know what you bought!I'm still around! I bought new Yukon gears off of Rock Auto.
#57
Transmission Shop / Re: Leaky Neutral Safety Switc...
Last post by AMC of Houston - October 01, 2025, 06:05:34 PMSuccess!!! 
Located a lot of 4 NOS units - circa mid-'70's. Tossed one in; no more leaks!! New switches = crap; 50-year-old switch = sweet!! Has to be a moral in there somewhere re manufacturing quality.....
Noticed that NOS Mopar units go for $80-$100 on Ebay! Luckily no MOPAR folks wanted the cheap AMC units - probably because they have an AMC part number cast into the plastic. Don't want to chance a judge marking off points due to an AMC part number during concourse show judging! That faux pas would be right up there with having the wrong color paint dab on a bolt head somewhere.
Located a lot of 4 NOS units - circa mid-'70's. Tossed one in; no more leaks!! New switches = crap; 50-year-old switch = sweet!! Has to be a moral in there somewhere re manufacturing quality.....Noticed that NOS Mopar units go for $80-$100 on Ebay! Luckily no MOPAR folks wanted the cheap AMC units - probably because they have an AMC part number cast into the plastic. Don't want to chance a judge marking off points due to an AMC part number during concourse show judging! That faux pas would be right up there with having the wrong color paint dab on a bolt head somewhere.
#58
4X4 and Driveline / Re: V8 in SX4?
Last post by EagleSX4_5Speed - October 01, 2025, 05:49:57 PMIt has been done but you will need to fab everything yourself. Some of the rally cars had V8's in them.
This thread has some pics of the 390 in that car.
https://forums.amceaglesden.com/index.php?topic=46520.0
This thread has some pics of the 390 in that car.
https://forums.amceaglesden.com/index.php?topic=46520.0
#59
Axle / Differential / Re: Gear Ratios
Last post by spacedust - October 01, 2025, 05:40:43 PMHello, I know this is an old thread but where did you buy your new gears from for the front? I have an 8.8 with 3.55 gears ready to go in the rear but trying to figure out what i need for the front is driving me crazy. I dont know if new gears will fit, or if they need to be some special long pinion version or what. if you are still out there let me know what you bought!
#60
4X4 and Driveline / V8 in SX4?
Last post by dmsjeep - October 01, 2025, 05:27:12 PMI am wondering if an AMC 304 or 360 will fit in the engine compartment if a1981 SX4. I know the amc V8 was offered in the rear wheel drive cars, but will it fit in the engine bay with all the AWD components? If so who makes conversion parts and adapters?
Thank you
David
Thank you
David
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