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#1
04-22-2017, 12:33 AM
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Who cast the aluminum 389 blocks
If I can remember correctly, they were cast at Reynolds Aluminum. What do you say? Jack
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#2
04-22-2017, 02:02 AM
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Not sure if there were others, but the ones that people call the "Mickey Thompson" blocks were cast by Harvey Aluminum for a development project by PMD. Pontiac wanted to evaluate chrome-plated bores in aluminum. The bore plating wasn't successful, and somehow(?) Mickey wound up with the half dozen or so blocks. Most of them were almost direct copies of a 1960 389 block, but Tom S had one with the later bolt pattern on the rear. I have two of the others. Tom's oddball one was only one number away from one of mine (Dxxxxx).
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) ... or has a Pontiac born the same year as Jim Wangers? (1926} 
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#3
04-22-2017, 09:37 AM
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Harvey Aluminum poured all kinds of "engineering projects" for the big three, I am guessing. At my school we had a Chrysler slant 6 block and head, early 60's vintage, cast by Harvey Aluminum. They still have the head down there in a cabinet. Closed chamber, aluminum slant 6. So it wasn't just high performance the OE's were looking at. Amazing stuff being experimented with in the 60's.
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#4
04-23-2017, 01:07 AM
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Yo Tom, tell us more!
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... 
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#5
04-23-2017, 09:19 AM
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Those were the early alu blocks,the later (60s-70s)were cast at or for the factory.I have owned 2 of them.I believe at least 6 got out.A friend of Tom Vaughts told me he got them from the scrap.One of mine was machined but had casting flaws,the other was raw and was finally finished by KRE.Both are running engines now.Tom
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#6
04-23-2017, 11:56 PM
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Do you know why the chrome plated cylinders didn't work? They were used in motorcycles with success.
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#7
04-24-2017, 08:04 AM
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I guess in 1959-60 the tech was not as good?Tom
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