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#2419611 - 12/16/17 06:27 PM 1970 318 mating to 1963 727
MoPar Offline
super stock

Registered: 01/23/03
Posts: 992
Checking to see if the bolt pattern is the same to mate them together, the 4 common trans to block bolts line up, the bolt that is near the aligning dowel on the drivers side does not line up to the trans threaded hole, the same bolt on the other side behind the oil filter does line up, any ideas ?

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#2419617 - 12/16/17 06:56 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
stumpy Offline


Registered: 01/19/03
Posts: 29235
Loc: Grand Prairie,Texas
Will the flex plates and converters swap?

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#2419626 - 12/16/17 07:20 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
MoPar Offline
super stock

Registered: 01/23/03
Posts: 992
I will try to add a picture, the left hole is the aligning dowel and the middle hole and the right hole should line up.


Attachments
20171216_180150.jpg




Edited by MoPar (12/16/17 07:21 PM)

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#2419665 - 12/16/17 09:03 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
TJP Offline
master

Registered: 01/24/03
Posts: 8543
Loc: Omaha Ne
The LA style motors will bolt up to the earlier trans and flex plate / converter.
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#2419675 - 12/16/17 09:28 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
buildanother Offline
I Live Here

Registered: 08/30/05
Posts: 11143
Loc: chicagoland,usa
How about the converter register size, Different?

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#2419676 - 12/16/17 09:30 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
therocks Online   content
Its Lost

Registered: 01/20/03
Posts: 19215
Loc: Niles , Ohio
They will bolt up as said.IIRC one bolt wont line up.I think the register is different but works.Did it morethan once.Rocky
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#2419755 - 12/17/17 06:35 AM Re: 1970 318 mating to 1963 727 [Re: MoPar]
MoPar Offline
super stock

Registered: 01/23/03
Posts: 992
Would it be necessary to drill and tap the trans to utilize the block hole that doesn't line up ?

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#2419758 - 12/17/17 06:49 AM Re: 1970 318 mating to 1963 727 [Re: MoPar]
MoPar Offline
super stock

Registered: 01/23/03
Posts: 992
Here is what I should have put in the original post, have a 63 Fury with original drivetrain, the 318 poly was bad so I'm putting in a 70 318 and using the original 727 cable shift trans, the flex plate and torque converter are the originals to the 63. The flex plate, crank, and torque converter all bolted together fine, the block to trans bolted up fine except the bolt below the aligning dowel on the drivers side. As far as the torque converter register to crank goes I don't know as it seemed to go together ok.

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#2419795 - 12/17/17 09:30 AM Re: 1970 318 mating to 1963 727 [Re: MoPar]
RapidRobert Offline
Circle Track

Registered: 11/20/03
Posts: 33688
Loc: Lincoln Nebraska
I think the register hole in the crank & the TC nub were enlarged in ~68 or so & you can use the later crank/early trans (like you are doing) but not the other way around & the gap may or not be OK as is but I think people have done it & there was an article in a van magazine where in addition they cut some slits in the flexplate so it would flex & not wear out the pump bushing (iirc, not sure, I have it somewhere). Doug Dutra of the old /6 club of America used to machine a spacer to take up that space & later wildcat auto was selling em (not sure if it is needed & or the /6 one is the same as the V8 one) but it must be desireable otherwise it would not have been fabbed by several individuals. I have one if you need dimentions.
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#2419912 - 12/17/17 01:53 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
Cab_Burge Offline
I Win

Registered: 08/23/03
Posts: 30950
Loc: Bend,OR USA
You need to measure both the crank hole I.D. and the O.D. of the converter hub, very little clearances(.008 to maybe .015) are needed, no slop allowed tsk scope If it has a lot of clearance you can have a bushing made to slip on the converter hub to get it back to factory specs. up scope
The crank hub aligns and holds the converter and centers it so it won't wipe out the front pump bushing and seal work It needs to be correct, not loose thumbs


Edited by Cab_Burge (12/17/17 01:54 PM)
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#2419963 - 12/17/17 04:19 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
John_Kunkel Offline
I Live Here

Registered: 01/20/03
Posts: 19377
Loc: Rio Linda, CA
All 727 converter pilot hubs are the same 1.81" diameter. The Poly motor trans case has one hole that won't match the LA engine, drill/tap.

The '63 727 input shaft spline is different than the '67 and later, must use '62-'66 converter or change input shaft.
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#2419995 - 12/17/17 05:31 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
MoPar Offline
super stock

Registered: 01/23/03
Posts: 992
Thanks everyone for the input, I like the last answer the best as that would mean I don't have the pull the LA 318 I just put in yesterday !

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#2420017 - 12/17/17 06:03 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
Transman Offline
super stock

Registered: 03/27/11
Posts: 746
Loc: Michigan
OP reused the original converter.

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#2420043 - 12/17/17 07:21 PM Re: 1970 318 mating to 1963 727 [Re: John_Kunkel]
TJP Offline
master

Registered: 01/24/03
Posts: 8543
Loc: Omaha Ne
Originally Posted By John_Kunkel
All 727 converter pilot hubs are the same 1.81" diameter. The Poly motor trans case has one hole that won't match the LA engine, drill/tap.

The '63 727 input shaft spline is different than the '67 and later, must use '62-'66 converter or change input shaft.


Thanks John for stopping the internet tales whistling
bow bow
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#2420058 - 12/17/17 07:47 PM Re: 1970 318 mating to 1963 727 [Re: TJP]
Supercuda Offline
I Live Here

Registered: 09/04/07
Posts: 13239
Originally Posted By TJP
Originally Posted By John_Kunkel
All 727 converter pilot hubs are the same 1.81" diameter. The Poly motor trans case has one hole that won't match the LA engine, drill/tap.

The '63 727 input shaft spline is different than the '67 and later, must use '62-'66 converter or change input shaft.


Thanks John for stopping the internet tales whistling
bow bow


Not a tale, a simple mistake, the pilot diameter issue applies to the 904 style transmissions, only.

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#2420218 - 12/18/17 05:09 AM Re: 1970 318 mating to 1963 727 [Re: MoPar]
MoPar Offline
super stock

Registered: 01/23/03
Posts: 992
Thanks again everyone for all of the experience and knowledge !!

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#2420419 - 12/18/17 02:11 PM Re: 1970 318 mating to 1963 727 [Re: MoPar]
dogdays Offline
I Live Here

Registered: 01/20/03
Posts: 16120
I didn't read the intermediate posts between OP and here, so beware!

The bellhousing has one hole that doesn't line up, the lowest one on the driver's side. Many leave the bolt out. Because this bolt is the lowest , below the centerline of transmission and crank, it is important to have some clamping force at that point. I found that I was able to drill a new hole and tap it but I could have also used a bolt and nut. It doesn't have to be a huge bolt. It could be one size smaller than the others and still do its job.

R.


Edited by dogdays (12/18/17 02:31 PM)

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#2420458 - 12/18/17 02:50 PM Re: 1970 318 mating to 1963 727 [Re: Supercuda]
John_Kunkel Offline
I Live Here

Registered: 01/20/03
Posts: 19377
Loc: Rio Linda, CA
Originally Posted By Supercuda
Originally Posted By TJP
Originally Posted By John_Kunkel
All 727 converter pilot hubs are the same 1.81" diameter. The Poly motor trans case has one hole that won't match the LA engine, drill/tap.

The '63 727 input shaft spline is different than the '67 and later, must use '62-'66 converter or change input shaft.


Thanks John for stopping the internet tales whistling
bow bow


Not a tale, a simple mistake, the pilot diameter issue applies to the 904 style transmissions, only.


Gosh, maybe that's what I was trying to convey. rolleyes
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I'm supposed to respect my elders, but its getting harder and harder for me to find one now.

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#2420461 - 12/18/17 02:54 PM Re: 1970 318 mating to 1963 727 [Re: John_Kunkel]
dogdays Offline
I Live Here

Registered: 01/20/03
Posts: 16120
Thank you, John Kunkel, for being a touchstone, a rock upon whose knowledge we can base our decisions.
Merry Christmas and a Happy and Healthy New Year!

R.

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#2420465 - 12/18/17 02:57 PM Re: 1970 318 mating to 1963 727 [Re: John_Kunkel]
Supercuda Offline
I Live Here

Registered: 09/04/07
Posts: 13239
Originally Posted By John_Kunkel
Originally Posted By Supercuda
Originally Posted By TJP
Originally Posted By John_Kunkel
All 727 converter pilot hubs are the same 1.81" diameter. The Poly motor trans case has one hole that won't match the LA engine, drill/tap.

The '63 727 input shaft spline is different than the '67 and later, must use '62-'66 converter or change input shaft.


Thanks John for stopping the internet tales whistling
bow bow


Not a tale, a simple mistake, the pilot diameter issue applies to the 904 style transmissions, only.


Gosh, maybe that's what I was trying to convey. rolleyes


I was not talking to you. If your comprehension equaled your arrogance you'd be the genius you think you are.

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