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Re: Packard Engine to GM Auto Transmission Adapters
#21
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johntrhodes81
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A 3.06 to 1 1st gear should help along with overdrive.

Posted on: 6/16 19:47
John Rhodes

1953 Packard Patrician
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Re: Packard Engine to GM Auto Transmission Adapters
#22
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johntrhodes81
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The 4L60e is in and bolted to the engine. Next step is a rear transmission mount. Seems the stock rear cross member will need only slight modification. The Ultramatic is very difficult to get in and out in one piece. To do that it requires significant tilting to get it in which is difficult to do without a lift and a high rise trans jack.

The 4L60e is shorter and can just be slipped in with some tilting using a low rise trans jack and a car even on jack stands. To remove an Ultramatic in this scenario the tail housing must be removed.

So now it is time for trans mount, linkage, driveshaft, wiring etc.

John

Posted on: 7/1 7:02
John Rhodes

1953 Packard Patrician
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Re: Packard Engine to GM Auto Transmission Adapters
#23
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BH
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When I set out to drive my first 56 Patrician home from deep in the heart of WV, the front pump seal in the Twin Ultramatic started leaking badly, shortly after I crossed into PA.

My dad ran the H-D truck shop at a Chevy dealer and came down after work with a C60 wrecker to haul it back to the shop. The following week, he had the mechanics put the Pat up on 4 jack stands with nothing more than a (big) floor jack and use his old Walker transmission jack to get the tranny in and out. Although I wasn't there to watch, he had no complaints about doing the job. Of course, having worked as a mechanic in a Packard dealership, this wasn't his first rodeo.

As you can see from the illustration, this is a low slung jack. There are four bolts that get run up through the bottom of the lifting pad at four of any of several threaded holes, which allow for some adjustment, even in play. It originally came with a piece of chain to throw over the top of the unit to secure it, but my dad used a tarp strap. IMHO, a lashing strap might be better.

Actually called a "unit lift", the manufacturer also promoted it for R&I of rear axle assemblies. My dad told me that he also used it to R&I Corvair engines. A subsequent generation of this jack had a tubular frame.

Althpugh yo seem to be well past this point, good luck with the rest of the conversion on your 53.

Attach file:



jpg  Lincoln20Walker20J-79820Series20E20Parts20List.jpg (30.40 KB)
103_60ddc787b5edb.jpg 467X600 px

Posted on: 7/1 8:47
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Re: Packard Engine to GM Auto Transmission Adapters
#24
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johntrhodes81
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Thanks and nice story. I used a Harbor freight tools version of that.

Posted on: 7/1 15:11
John Rhodes

1953 Packard Patrician
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