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  #41  
Old 12-13-2019, 07:51 PM
tom s tom s is online now
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Mike,that block has a casting date,these only have the D number,no casting dateTom

  #42  
Old 12-13-2019, 10:02 PM
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Tom, the first block has significant white and grey corrosion. You might want to passivate it.

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  #43  
Old 12-15-2019, 02:08 AM
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Anybody know where these blocks were cast? PMD? Harvey Aluminum?
How many?
Any member here have any info to share about them?

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  #44  
Old 12-15-2019, 02:11 AM
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Mike Noun- what is the block in your pictures?

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... or has built a record breaking DOHC hemi four cylinder Pontiac?
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Last edited by Jack Gifford; 12-15-2019 at 02:23 AM.
  #45  
Old 12-15-2019, 02:22 AM
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Quote:
Originally Posted by Jack Gifford View Post
... Simply to have an aluminum engine for your '62, why not use just any-old aluminum block?...
Tom- if you don't mind, I'd appreciate you answering this question.

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... or has built a record breaking DOHC hemi four cylinder Pontiac?
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  #46  
Old 12-15-2019, 02:53 AM
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Jack, what would you call any old aluminum block?

I have wondered what all the aluminum blocks were intended for, or if Mickey just had the pull to have them made, and would use them as he desired....

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  #47  
Old 12-15-2019, 03:19 AM
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Quote:
Originally Posted by 77 TRASHCAN View Post
Jack, what would you call any old aluminum block?
IAII and MR1 are both available in aloominium

  #48  
Old 12-15-2019, 03:28 AM
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Quote:
Originally Posted by Jack Gifford View Post
Mike Noun- what is the block in your pictures?
The block in Mike's picture is on display at the Pontiac Museum in Illinois, not sure of casting date thou

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  #49  
Old 12-15-2019, 10:39 AM
tom s tom s is online now
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Jack,have any idea where I could find just any old pontiac alu block?These have a D number so im sure PMD foundry cast them.Who knows they might just go under a nice piece of glass and will be my new desk.Tom

  #50  
Old 12-15-2019, 10:42 AM
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My factory all alu engine was cast in April 1959 and it had a 61-64 bell pattern.It was a 3in main and was marked V 370 on the face of the block.Tom

  #51  
Old 12-15-2019, 11:50 AM
mgarblik mgarblik is offline
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Tom, first congratulations on obtaining these rare blocks. It's truly amazing parts like this, un-machined are still out there in the nooks and crannies of the Pontiac world. Looking at your pics one item really stood out to me. I am surprised it appears the area where the main caps would bolt-up is a cast-in area with voids from a core? I would think they would just be drilled and tapped into the solid aluminum? I didn't see any partial bolt hole locations anywhere else on the casting. The two primary machining datums for the block are not located on that block. From the factory, the large hole on the pan rail where the later model starter pad is and the one on the front face near the cam bearing area are the first two machined items I think. Dimitrie Toth could probably verify this since his father and he both were "on the line" for decades during machining and casting. You will have a wonderful time working with that hiustoric hunk of aluminum. I am pretty jealous as well.

  #52  
Old 12-15-2019, 12:15 PM
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That was the first thing I looked for on these blocks.The 2 later alu blocks had exactly those holes in the pan rail.BUT those blocks had the pan rail machined when I got them.Dimitrie did not have any knowledge of the early blocks as many were cast in the late 50s.They might have had a outside foundry cast them also.The later ones were cast I think about 1972.No clue on these 2 blocks.Im taking them to my machinist this week to have him take a look at them.Monetarily wise it makes no sense to do anything with these castings as they will never be as good as the aftermarket alu blocks avail.I have never been accused of having good sense.Tom

  #53  
Old 12-15-2019, 01:21 PM
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Quote:
Originally Posted by tom s View Post
Monetarily wise it makes no sense to do anything with these castings as they will never be as good as the aftermarket alu blocks avail.I have never been accused of having good sense.Tom
I think the mojo trips your trigger I can dig that.

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  #54  
Old 12-15-2019, 02:15 PM
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The journey is the reward?Tom

  #55  
Old 12-16-2019, 02:01 AM
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Quote:
Originally Posted by tom s View Post
... These have a D number so im sure PMD foundry cast them...
Maybe. But as you know, the two I have (and 1 or 2 you had) also had 'D' numbers and were definitely cast by Harvey Aluminum. Admittedly the 'D' numbers were stamped- but that doesn't mean that PMD couldn't have called for cast-in 'D' numbers by an outside foundry.

Where to find "... any old aluminum Pontiac block..." ??? You can answer this better than I can. But I think you'll agree that these two certainly aren't "any old" ones.

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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)
  #56  
Old 12-16-2019, 02:16 AM
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Quote:
Originally Posted by 77 TRASHCAN View Post
... I have wondered what all the aluminum blocks were intended for, or if Mickey just had the pull to have them made...
I can only answer regarding the half-dozen Harvey Aluminum blocks (two of which I bought from Mickey and Tom S had at least one). I have copies of documentation of the following:
They were for a 1961 study by PMD to evaluate plated (non-sleeved) bores in aluminum blocks- one of mine had remnants of chrome-plate on the bores, and marks where a thermocouple had been clamped between the deck and a head. It was a failed attempt. Mickey knew about the blocks and somehow(??) acquired them. These blocks were in no way race-oriented, as Pontiac merely loaned Harvey the sand-casting patterns of a 389. The main webs (and possibly the decks) were slightly thickened, but the bare blocks only weigh 69 lbs.

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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)

Last edited by Jack Gifford; 12-16-2019 at 02:21 AM.
  #57  
Old 12-16-2019, 10:47 PM
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Jack, yes, the MT block I posted photos of is at the Pontiac Museum. I have more detailed photos (hi-res), but PY reduces the image size.

The all-aluminum engine that appeared in a 1962 Catalina at the POCI Nats was another one I thought of.

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  #58  
Old 12-16-2019, 10:50 PM
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Mike,that was my engine I built,it was in my 63 lemans wagon when I sold it.The engine then went in one of those 62 bubble top cats.Tom

  #59  
Old 12-16-2019, 11:10 PM
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The codes on the block in the Pontiac Museum:

D-42042
EO-3617
BLK NO-8
V370AL-3


Mike
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  #60  
Old 12-16-2019, 11:33 PM
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Does that look like change 56?Tom

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