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Old September 7th, 2023, 01:32 PM
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Small block identification

What year and cubic inch is this engine. Has #5A heads .
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Old September 7th, 2023, 01:35 PM
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This carb was on the engine as well no clue as to size or year. Carter quadra jet.
Last edited by wr1970; September 7th, 2023 at 02:37 PM.
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Old September 7th, 2023, 01:57 PM
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Olds 307, an 80's, I assume an electronic carburetor.
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Old September 7th, 2023, 02:07 PM
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Originally Posted by olds 307 and 403
Olds 307, an 80's, I assume an electronic carburetor.
Nope a Carter quadra jet. My bad😂
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Old September 7th, 2023, 05:20 PM
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Looks like a 1980 Chevrolet Qjet, is it side inlet?
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Old September 7th, 2023, 06:26 PM
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Originally Posted by olds 307 and 403
Looks like a 1980 Chevrolet Qjet, is it side inlet?
I would have to check. I don't remember. And I will take a complete picture of this carb tomorrow.
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Old September 8th, 2023, 03:48 AM
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Carb is 1980 Chevy / GMC truck.
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Old September 8th, 2023, 06:46 AM
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Originally Posted by BillK
Carb is 1980 Chevy / GMC truck.
Thanks!😊 Now if I can find out about the block. I did a search and found nothing. Maybe a restamp.
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Old September 8th, 2023, 06:55 AM
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3AMxxxxxx is a 1980 VIN derivative. The "A" indicates the 1980 model year, "M" naturally is Lansing. Olds made 260, 307, and 350 blocks in the 1980 model year. We need a photo of the block casting number to know which it is. The 5A heads suggest a 307, but of course they may not be original to the block.
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Old September 8th, 2023, 09:54 AM
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Originally Posted by joe_padavano
3AMxxxxxx is a 1980 VIN derivative. The "A" indicates the 1980 model year, "M" naturally is Lansing. Olds made 260, 307, and 350 blocks in the 1980 model year. We need a photo of the block casting number to know which it is. The 5A heads suggest a 307, but of course they may not be original to the block.
says 3161-5A Joe

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Old September 8th, 2023, 09:55 AM
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307. 1980 was the first year.
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Old September 8th, 2023, 09:57 AM
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Originally Posted by olds 307 and 403
Looks like a 1980 Chevrolet Qjet, is it side inlet?

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Old September 8th, 2023, 10:01 AM
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Originally Posted by joe_padavano
307. 1980 was the first year.
Thanks Joe.
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