Flexplate question A 904 lockup 1980
#2506914
06/11/18 04:09 AM
06/11/18 04:09 AM
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CrAzYMoPaRGuY
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I've got a Cordoba, 1980. It's got a 318 and a lockup trans I assume based on a 904. Does anybody know with certainty which flexplate it would have? 10" bolt circle or 11" bolt circle? I could pull the cover and look but can't get to the car until next week. If it's one or the other for sure I could order a flexplate..... lol If anybody knows for sure let me know, if I have to wait until Saturday to look for a D or an O I'm ok with that too I guess lol THANKS!
CrAzYMoPaRGuY
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2506968
06/11/18 10:47 AM
06/11/18 10:47 AM
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RapidRobert
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the common small 904 plate I would assume. whats wrong with this one?
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507164
06/11/18 05:16 PM
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CrAzYMoPaRGuY
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I want to swap in a 360 and don't want to disturb the converter. It's a lockup trans and the 318 internally balanced. I thought I would grab a B&M flexplate that eliminates the weights.
A 1980 Cordoba could have a 727?? Never heard of that!!! I always thought 1980 Cordoba 318s were alllll 2 barrels, but for whatever reason I'm pretty sure the 4 barrel on mine is stock. Weird?
Floor shift
Thanks guys!
CrAzYMoPaRGuY
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507305
06/11/18 11:00 PM
06/11/18 11:00 PM
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RapidRobert
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I want to swap in a 360 and don't want to disturb the converter. It's a lockup trans and the 318 internally balanced. I thought I would grab a B&M flexplate that eliminates the weights. Yes I would look for a 10239 B&M new or used.
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Re: Flexplate question A 904 lockup 1980
[Re: 5thAve]
#2507311
06/11/18 11:17 PM
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CrAzYMoPaRGuY
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It's more then likely a 904. Get ready to do a trans swap because the 360 will kill it at some point. But it's fun while it lasts. lol It's a 904 based lockup trans. They last behind healthy 360s. I know, I ran one for years and years back in the 1990s. No idea where you get your info from.
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Re: Flexplate question A 904 lockup 1980
[Re: RapidRobert]
#2507312
06/11/18 11:19 PM
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CrAzYMoPaRGuY
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I want to swap in a 360 and don't want to disturb the converter. It's a lockup trans and the 318 internally balanced. I thought I would grab a B&M flexplate that eliminates the weights. Yes I would look for a 10239 B&M new or used. That's the dual pattern right? I assume the larger flexplate will fit in a sbm bellhousing regardless of lockup or not? I think that's the better way to go actually. Thanks RR.
CrAzYMoPaRGuY
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507315
06/11/18 11:25 PM
06/11/18 11:25 PM
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Supercuda
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It's more then likely a 904. Get ready to do a trans swap because the 360 will kill it at some point. But it's fun while it lasts. lol It's a 904 based lockup trans. They last behind healthy 360s. I know, I ran one for years and years back in the 1990s. No idea where you get your info from. Heck, when I swapped a 360 into my 72 Swinger the donor was a 79 Cordoba and the trans was an A999, original to the Doba.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507317
06/11/18 11:29 PM
06/11/18 11:29 PM
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CrAzYMoPaRGuY
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I think my original Cordoba I had to buy a converter with a higher stall at one point, and was told the trans was referred to as a hydraulic lockup A999. Not sure if that was accurate or not but the converter worked!!! lol
CrAzYMoPaRGuY
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507319
06/11/18 11:31 PM
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CrAzYMoPaRGuY
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I think lockup based A904s came stock behind all the 360 J body Cordobas and Miradas. Just not sure if A999 is proper designation
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507322
06/11/18 11:32 PM
06/11/18 11:32 PM
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Supercuda
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A904 - /6 A998 - 318 A999 - 360
A727 - 340
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507323
06/11/18 11:34 PM
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CrAzYMoPaRGuY
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So is the lockup trans in my 318 J body an A998? What's the difference to an A999 I wonder? Thanks SuperCuda! I always wondered.....
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507332
06/11/18 11:54 PM
06/11/18 11:54 PM
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Supercuda
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I forget the details, but basically more beef. I want to say clutches and plates but it's been a while.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507340
06/12/18 12:02 AM
06/12/18 12:02 AM
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From what I can see they also were available with a wide ratio which makes sense, cause mine accelerates wayyyyyy better than a 318 Cordoba should and still goes on the highway ok. My buddies thought gears but I kept saying how? It cruises at 85 mph easily.....
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507349
06/12/18 12:17 AM
06/12/18 12:17 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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I want to swap in a 360 and don't want to disturb the converter. It's a lockup trans and the 318 internally balanced. I thought I would grab a B&M flexplate that eliminates the weights. Yes I would look for a 10239 B&M new or used. That's the dual pattern right? I assume the larger flexplate will fit in a sbm bellhousing regardless of lockup or not? I think that's the better way to go actually. Thanks RR. Yes it is a dual pattern & I have used em several times with no issues. I didn't get the larger plate question.
live every 24 hour block of time like it's your last day on earth
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Re: Flexplate question A 904 lockup 1980
[Re: CrAzYMoPaRGuY]
#2507386
06/12/18 01:57 AM
06/12/18 01:57 AM
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CrAzYMoPaRGuY
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The larger 10239 flexplate. The 10236 flexplate is 10" diameter converter bolts only and slightly smaller outside diameter than the 10239 I'm sure they should both fit....
CrAzYMoPaRGuY
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Re: Flexplate question A 904 lockup 1980
[Re: Supercuda]
#2507461
06/12/18 11:18 AM
06/12/18 11:18 AM
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denfireguy
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I forget the details, but basically more beef. I want to say clutches and plates but it's been a while. In my experience, you are correct. I put one behind a 5.2L Magnum. The rebuild kit came shy of the number of frictions and steel plates that I pulled out of the clutch pack. Had to buy extra pieces to fill the pack. I was using an A998 Transgo kit. Craig
2014 Ram 1500 Laramie, 73 Cuda Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango Only previous Non-Mopar: Schwinn Tornado
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