I have been digging through all the information I gathered years ago in preparation for finally installing an A500 in place of the 727 in my 76 D100. I came across two pictures of what appears to be a special engine to transmission brace that was used with the smallblock adapter. It is the shiny blue piece in the following pictures:
I do not have one of these brackets and these pictures are the only reference to it I have found. I no longer remember where these pictures came from or have any information about them, I just found them in the folder on my computer in which I have stuck documents and images relevant to the adapter.

Does anyone have any information about this brace? Was it only used in some applications? It makes sense that there would be a special brace for when the adapter is used since the stock brace would no longer work.

Finally, if such a brace is necessary, anybody have one for sale? Or will I be fabricating another ugly yet functional part?

Thanks.

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Casually looking for a Clifford hyperpak intake for cheap.

I have a copy of that setup, I bought a 64 engine and trans out of a pickup that had that adapter setup. I'm not home to look but I don't remember that brace being curved like that...
I am pretty sure the newer ones without that adapter plate, that brace is different from auto to stick trans as I remember there's 2 different bolt hole spacings on the engine side
I've seen several/6s where people "forget" to put that brace back in and no worse for wear without. I too have an a500 I'm thinking of putting in my 85 behind its /6... I have the OD section in pieces and has been for all summer, thought it was gonna be a pull apart today and reassembled tomorrow kind of deal but I can't seem to get back to it ... Today I had to replace all the outside lights (clearance lights etc) on the camper... Up n down 100x on the ladder .... I have another 80s truck in paint jail that I'm working on "small parts" for, at home
Lots of blasting in the cabinet, I now have a back end of a Durango full of stuff that I now have bare and would like to take to the powder coater
Things like hood hinges and latch, battery tray, door hinges (all in pieces so I could replace the bushings anyway) gas tank straps, head lite buckets, and multiple of some parts to make sure I have "good ones"

I am concerned because once, many moons ago, I install a 225 in a Valiant in front of a 904 and forgot the engine to trans brace. I sold the car shortly after but about a month later the purchaser called me because the transmission had cracked in half. I suspect it happened because I forgot the brace. I want to avoid that kind of thing.

I have seen some of the adapter packages that do not have this brace, but I don't know what parts have gone missing in the 60 years since these parts were made.

Anybody have some old parts books or know enough to answer this one way or another?

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Casually looking for a Clifford hyperpak intake for cheap.

That piece would be easy enough to make. Just start with a standard bracket where it bolts to the block and work back to the adapter. I don't think I ever saw that specific piece before.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

I'll try to remember to get to the garage and look at my pile of parts, I have my adapter and related parts all together under the shelf unit

Right. I suspect one could even get away with a standard stock brace and a couple stacks of washers between the brace and the adapter, if one were as lazy and cheap as I am, but I would probbaly at least get a hunk of solid metal and drill a couple hgoles to make a spacer.

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Casually looking for a Clifford hyperpak intake for cheap.

That spacer plate is very solid (1.1" thick). I never saw or used/made a bracket for my setup and ran over 330 HP through it on the track. Maybe 40k miles on the setup too over 20 some years. I would forget it.

Lou

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Home of Slant6-powered fun machines since 1988

Yay! Thanks, Lou. The spacer is a substantial chunk of cast iron. More space in the engine compartment for exhaust piping is always welcome. I will skip the brace for now.

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Casually looking for a Clifford hyperpak intake for cheap.