Block id
May 31st, 2016, 09:00 AM
#2
Just an Olds Guy
Join Date: Jul 2008
Location: Edmonton, AB. And "I am Can 'eh' jun - eh"
Posts: 24,525
Ted, it's from the late 72 - 76 model years. There were F blocks that had overlap dates (68-74). Does that help? BTW, where did you get it?
Edit: Not GST. It looks more like 08 T. T is an engine code used with the 455. I'd guess that 08 is either the mold number, or the production month.
Edit: Not GST. It looks more like 08 T. T is an engine code used with the 455. I'd guess that 08 is either the mold number, or the production month.
May 31st, 2016, 09:46 AM
#5
Just an Olds Guy
Join Date: Jul 2008
Location: Edmonton, AB. And "I am Can 'eh' jun - eh"
Posts: 24,525
The G was produced from 68-74. GA from 72-76. The overlap of G/GA production was 72-74.
May 31st, 2016, 10:09 AM
#6
Just an Olds Guy
Join Date: Jul 2008
Location: Edmonton, AB. And "I am Can 'eh' jun - eh"
Posts: 24,525
Just an afterthought Ted,
Look at the heads on that 455. If they're GA, it's a 72. If they're J then it's 73-76. Also look to see if it has an EGR application on the drivers side of the intake manifold. That appeared in 1973 also.
Look at the heads on that 455. If they're GA, it's a 72. If they're J then it's 73-76. Also look to see if it has an EGR application on the drivers side of the intake manifold. That appeared in 1973 also.
May 31st, 2016, 10:26 AM
#7
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,298
The VIN derivative stamp on the block will tell you the year of the block. Everything else bolts on and can be changed over the last half-century.
May 31st, 2016, 10:54 AM
#8
Just an Olds Guy
Join Date: Jul 2008
Location: Edmonton, AB. And "I am Can 'eh' jun - eh"
Posts: 24,525
But if he wanted to know whether the intake and heads were 72 or later.....my way works too. 
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