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#1
08-20-2021, 11:37 AM
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Block ID
So for years I thought the block in my car was from a '67 GTO. Don' t know how I concluded that but I now found out its a 455 from I think 1973.
The numbers on the block are: 485428 728611 XL 23A226848 Is there anyway to find out what kind of car it was in from the factory? The heads are 1971 96 heads so no clues can be found there..
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1968 - Pontiac GTO |
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#2
08-20-2021, 12:37 PM
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Atlanta plant car.
Sent from my Moto Z3 Play using Tapatalk
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#3
08-20-2021, 01:15 PM
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1973 455 250 HP XL A 8.0 067 4X 1-4 7043262 Block Casting # 485428; after emission changeover
They came in all A,B,F and G body cars. |
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#4
08-20-2021, 01:25 PM
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485428 cast number is 455 fer sure.
my Spare 455 2-Bolt undrilled, is cast 485428 and stamped YU and 24x1000226 Last edited by Half-Inch Stud; 08-20-2021 at 01:27 PM. Reason: spell out |
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#5
08-20-2021, 01:58 PM
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Thanks for the info, so it could have come from pretty much anything then. One day I will just have to pull it and find out what parts are in it.. One day...
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1968 - Pontiac GTO |
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#6
08-20-2021, 02:49 PM
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send the vin into phs
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#7
08-20-2021, 05:53 PM
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I think the Atlanta plant made A-body and Grand Prix.
(at least 72 was I believe) 
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