By proposing to take 2 slant sixes, flip them back-to-back and making a 450 CID V-12?

I've been pondering this thought for a very long time.

Now before everybunny rants at me how that can't be done, I do not actually mean to destroy 2 perfectly good slant six blocks.

I would scan a block, make a CAD model that also incorporated all of the necessary changes [because, obviously flipping a block backward simply could never work anyhow], so that it could be bolted up to the same 727 or 4 speed bellhousings as any big block MOPAR would use, and it would, by default, have 2 separate cam shafts, but also, I would build some matching hemispherical combustion heads [because there ACTUALLY WAS ONE such hemi-[vertical]-six made by Chrysler at on point, as an experimental motor], and make an advanced alloy casting, including cross bolting.

The really wide mains, with enough extra webbing material, and a custom forged 12 cylinder based crank could really be a lot of fun.

Also, with HEMI heads, it would be a cross-flow head with the intake in the middle and the exhausts on each side.

I'd begin with a 450 CID base model, and gradually engineer it up to at least 660 CID [kinda like a 440, only with a 50% more cylinders], possibly take it all the way to 1200 CID...

Might even make an aluminum block version with aluminum heads and intake...with a blower-ready adapter...

I wonder if people would like it, or hate it... ~( ,m,)~

If you have the pocket change, go for it!

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Hyper_pak

If you are going to go to those extreams, why not go further? Legthen the block(s), use bigger bore/bore centers (allows bigger valves/ports), shorten stroke (more rpm). Or buy something like this
https://www.sonnysracingengines.com/eng ... gas-engine
It would probably be cheaper

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Or, y'know, instead of all that heavy-duty, high-dollar ironmongery, you could…oh, gosh, just blue-skying here, just spitballing…go troll somewhere else on the internet, child.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.