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How to ID 18 spline A833 4 speed? #760610 07/29/10 03:44 AM 07/29/10 03:44 AM
Joined: Jul 2005 Posts: 722 California BigDaddy440 OP super stock
BigDaddy440 OP super stock Joined: Jul 2005 Posts: 722 California	I'm going to look at a 4 speed trans which the seller is telling is a 18 spline "hemi" trans. I'm assuming the input-shaft has 18 splines and has a larger diameter than a standard trans? Correct? What should I be looking out for here? I'm wanting the trans for an A12 Roadrunner, and I don't want to get "taken" by buying a non-correct trans. Did these 18 splines come in other vehicles other than hemi and sixpack cars? Trucks maybe? Is there a diff between various 18 spline trannys? thanks! 1969 A12 Roadrunner 1970 Plymouth Cuda 1968 Dodge Dart

Re: How to ID 18 spline A833 4 speed? [Re: BigDaddy440] #760611 07/29/10 05:27 AM 07/29/10 05:27 AM
Joined: Mar 2006 Posts: 428 Mid-Atlantic S Scatransit mopar
Scatransit mopar S Joined: Mar 2006 Posts: 428 Mid-Atlantic	If there is a full VIN stamp on the side, that would help...If it begins with a "WS" (Coronet R/T) or "RS" (GTX), or if the engine code is a "J" (Hemi), then it would be an original 18-spline b-body unit. [oo]======[oo]

Re: How to ID 18 spline A833 4 speed? [Re: Scatransit] #760612 07/29/10 07:35 AM 07/29/10 07:35 AM
Joined: Jan 2003 Posts: 4,285 Ohio 6 64dodge572 master
64dodge572 master 6 Joined: Jan 2003 Posts: 4,285 Ohio	If your looking to buy it for the 69 car, bearing retainer casting should be c97621 and the tail housing casting should be c99128 or c99621. I would be more concerned with the condition of the inside, thats the expensive part to rebuild if it has been abused. Dan Brewers Performance Inc. 4-speed transmission and parts specialists PH 937-947-4416 or 937-698-4259 FAX 937-947-4419 www.brewersperformance.com

Re: How to ID 18 spline A833 4 speed? [Re: BigDaddy440] #760613 07/29/10 09:22 AM 07/29/10 09:22 AM
Joined: Oct 2005 Posts: 9,107 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 9,107 Ontario, Canada	An 18 spline is an 18 spline - period. There will be 18 splines on the input shaft. They only used a 308 bearing so even if the front retainer is wrong or missing it can be replaced with the correct one. You'll want to check that the tailstock has the mounting pad in the right place for your year/model but again, something that can be swapped fairly cheap. The internals and definately the most critical as that's where things get expensive. No chipped teeth on any gears! Ideally you want to see sharp teeth on the syncros BUT given the tranny's age that's doubtful. They shift better when the teeth are sharp but they still shift well when there's some wear. As far as price, too many guys are asking HUGE dollars based solely on the fact that its an 18 spline tranny. Personally, unless the everything's REALLY nice inside I wouldn't pay more than a couple hundred for it - TOPS! Check out both Brewers and Passon websites for more info on i.d.'ing the trans as well as the cost of parts and labor.

Re: How to ID 18 spline A833 4 speed? [Re: BigDaddy440] #760614 07/29/10 09:48 AM 07/29/10 09:48 AM
Joined: Nov 2003 Posts: 5,048 Atlanta Indiana D Dave Watt master
Dave Watt master D Joined: Nov 2003 Posts: 5,048 Atlanta Indiana	Hi Dan, hope you can work out a deal on the trans. Here is a photo of my original one for reference. Dave 6111388-1969Hemi4-speedA12RM21M9Atransmissionrebuild4.jpg (2801 downloads)

Re: How to ID 18 spline A833 4 speed? [Re: Stanton] #760615 07/29/10 09:53 AM 07/29/10 09:53 AM
Joined: Mar 2003 Posts: 18,688 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,688 Fresno, CA	Quote: An 18 spline is an 18 spline - period. There will be 18 splines on the input shaft. They only used a 308 bearing so even if the front retainer is wrong or missing it can be replaced with the correct one. NOPE. The very early 18-splines used the 307 bearing. I believe every one of those does NOT have the stamp pad on the side, either. The last one I sold was an early unit and was missing the bearing retainer, but did have the correct early bellhousing. The trans was in excellent condition and I got $750 for it (I'm guessing '03-05 for a time frame). I figured that half of what Passon wanted for a new one was fair and it was the first thing I sold at Spring Fling that year for full asking price. Inspect it carefully and expect to do a full rebuild.

Re: How to ID 18 spline A833 4 speed? [Re: Jim_Lusk] #760616 07/29/10 11:33 AM 07/29/10 11:33 AM
Joined: Jan 2003 Posts: 75,327 A gulag near you. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,327 A gulag near you.	Quote: Quote: An 18 spline is an 18 spline - period. There will be 18 splines on the input shaft. They only used a 308 bearing so even if the front retainer is wrong or missing it can be replaced with the correct one. NOPE. The very early 18-splines used the 307 bearing. I believe every one of those does NOT have the stamp pad on the side, either. The last one I sold was an early unit and was missing the bearing retainer, but did have the correct early bellhousing. The trans was in excellent condition and I got $750 for it (I'm guessing '03-05 for a time frame). I figured that half of what Passon wanted for a new one was fair and it was the first thing I sold at Spring Fling that year for full asking price. Inspect it carefully and expect to do a full rebuild. , what he said plus a 71 up 18 spline trans has a different gear ratio, it's a 2.47 first gear instead of 2.65 (2.66??)

Re: How to ID 18 spline A833 4 speed? [Re: BigDaddy440] #760617 07/29/10 01:41 PM 07/29/10 01:41 PM
Joined: Jul 2005 Posts: 722 California BigDaddy440 OP super stock
BigDaddy440 OP super stock Joined: Jul 2005 Posts: 722 California	Thank you everyone, very good info here. The guy who's selling the trans SAYS the internals are in great shape, but we'll see. I've never ID'd an A833, so other than counting the splines, I had no idea what to look for. I'll keep you all posted. Going to see it tomorrow. I'm hoping to pay $500, but we'll see how it looks. I'll have it gone through regardless. He says he had the bell housing and a factory shifter too. Thanks again! -dan 1969 A12 Roadrunner 1970 Plymouth Cuda 1968 Dodge Dart

Re: How to ID 18 spline A833 4 speed? [Re: BigDaddy440] #760618 07/30/10 03:03 AM 07/30/10 03:03 AM
Joined: Jul 2005 Posts: 722 California BigDaddy440 OP super stock
BigDaddy440 OP super stock Joined: Jul 2005 Posts: 722 California	Looked at the Trans today: Continued here: https://board.moparts.org/ubbthreads/show...e=0#Post6112690 1969 A12 Roadrunner 1970 Plymouth Cuda 1968 Dodge Dart

Re: How to ID 18 spline A833 4 speed? [Re: JohnRR] #760619 07/30/10 08:21 AM 07/30/10 08:21 AM
Joined: Mar 2005 Posts: 2,172 Ohio T theclutcher top fuel
theclutcher top fuel T Joined: Mar 2005 Posts: 2,172 Ohio	Quote: Quote: Quote: An 18 spline is an 18 spline - period. There will be 18 splines on the input shaft. They only used a 308 bearing so even if the front retainer is wrong or missing it can be replaced with the correct one. NOPE. The very early 18-splines used the 307 bearing. I believe every one of those does NOT have the stamp pad on the side, either. The last one I sold was an early unit and was missing the bearing retainer, but did have the correct early bellhousing. The trans was in excellent condition and I got $750 for it (I'm guessing '03-05 for a time frame). I figured that half of what Passon wanted for a new one was fair and it was the first thing I sold at Spring Fling that year for full asking price. Inspect it carefully and expect to do a full rebuild. , what he said plus a 71 up 18 spline trans has a different gear ratio, it's a 2.47 first gear instead of 2.65 (2.66??) 23 spline had 2.66 or 2.47 18 spline had 2.65 or 2.44

Re: How to ID 18 spline A833 4 speed? [Re: theclutcher] #760620 07/30/10 08:50 AM 07/30/10 08:50 AM
Joined: Jan 2003 Posts: 75,327 A gulag near you. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,327 A gulag near you.	Quote: Quote: Quote: Quote: An 18 spline is an 18 spline - period. There will be 18 splines on the input shaft. They only used a 308 bearing so even if the front retainer is wrong or missing it can be replaced with the correct one. NOPE. The very early 18-splines used the 307 bearing. I believe every one of those does NOT have the stamp pad on the side, either. The last one I sold was an early unit and was missing the bearing retainer, but did have the correct early bellhousing. The trans was in excellent condition and I got $750 for it (I'm guessing '03-05 for a time frame). I figured that half of what Passon wanted for a new one was fair and it was the first thing I sold at Spring Fling that year for full asking price. Inspect it carefully and expect to do a full rebuild. , what he said plus a 71 up 18 spline trans has a different gear ratio, it's a 2.47 first gear instead of 2.65 (2.66??) 23 spline had 2.66 or 2.47 18 spline had 2.65 or 2.44 thanks for that correction

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