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#441
06-21-2024, 10:42 AM
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I agree this was interesting;
I picked up the block yesterday from the machine shop and was surprised to see the markings - I had never seen them before, but knew exactly what they were. I have more pictures, but figured those two would be sufficient for anyone interested.
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1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
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#442
06-21-2024, 01:12 PM
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Kind of related:
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#443
06-21-2024, 01:17 PM
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My 70 Judge had the marks and seems my 74 SD block had them. (stampings)
Most other blocks never looked that close. Also have a Service News on 1971. (couldn't find any 70 codes) 
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#444
06-21-2024, 04:54 PM
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It was probably in a Technical Service Manual or Service News (1970-1 period).
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So long, farewell. |
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#445
06-22-2024, 06:11 PM
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Was out in the storage area and looked at the YZ engine. Stampings are...
S P P S 2 4 6 8 1 3 5 7 S T S T
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So long, farewell. |
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#446
06-23-2024, 07:35 AM
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Cool! Another group of stamps...pretty tight tolerances on your YZ Mike.
It's funny that Oldsmobile's 1970 performance brochure talked about "select-fit" pistons for 'factory blueprinting" their "W" engines, when this was standard practice in the industry. Maybe they held the tolerances a bit tighter(?)...I don't know. Dennis |
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