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Old Jul 25, 2009 | 02:45 PM
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Default engine identification from door plate

This 74 rebuild is getting all consuming ... was looking at thread other day about VIN so went and looked at ours. Everything matched up but the code for the engine which shows "J" unlike what was posted the other day. Apparently built 9/73 as a 1974 model in St Louis. What kind of engine is a "J".
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Old Jul 25, 2009 | 03:10 PM
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J is not an engine, you cannot tell what type of engine from VIN TAG.
Only if it is the orginal matching the Vin#
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Old Jul 25, 2009 | 03:27 PM
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This will tell you what you have.

Gary



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Old Jul 25, 2009 | 03:45 PM
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J is not an engine, you cannot tell what type of engine from VIN TAG.
Only if it is the orginal matching the Vin#
in the corvette vin i thought position 5 shows the engine size that was originally installed. letters were used and vary by year
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Old Jul 25, 2009 | 04:30 PM
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Originally Posted by gradys caars
This 74 rebuild is getting all consuming ... was looking at thread other day about VIN so went and looked at ours. Everything matched up but the code for the engine which shows "J" unlike what was posted the other day. Apparently built 9/73 as a 1974 model in St Louis. What kind of engine is a "J".
If you're getting the J from the trim tag on the drivers door pillar post near the hinge, that's the date it was built.

If you are looking at the VIN tag on the windshield frame, on a '74 the J is for an L48 (base) engine.

The engine type became part of the VIN in '72 MY.
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Old Jul 25, 2009 | 04:43 PM
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all of my plates were missing.The only plate I have is the vin on the windshield,I think the only original 1974 part on my car is the center grill. Ragtag
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Old Jul 25, 2009 | 04:52 PM
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Has any one noticed that there are many more 74's on the Forum this past year.When I first joined I felt like the red headed cousin,I seemed to be the only one.Glad to have more of you around.It was the last of some features and the beginning of many. John
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Old Jul 25, 2009 | 05:02 PM
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Gary this is awesome thanks .... you realilze a monster is being created as now i have to go check all the numbers. I was told it is all number matching but now I can determine for myself ... thanks again. Gradys
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Old Jul 25, 2009 | 06:34 PM
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Originally Posted by gradys caars
Gary this is awesome thanks .... you realilze a monster is being created as now i have to go check all the numbers. I was told it is all number matching but now I can determine for myself ... thanks again. Gradys
That's the fun in owning an old car. Trying to figure out what you have. Here's another one so you can go check what axle and trannie you have.

Gary

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Old Jul 25, 2009 | 08:45 PM
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opps I meant the trim tag. :o 69VETT
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Old Jul 26, 2009 | 01:23 PM
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Originally Posted by Duke94
This will tell you what you have.

Gary



Gary,
My 74 trim tag reads: Chev--- N30, trim 416, paint 80L.
Production #37456

What am I missing? glassman74

Last edited by glassman74; Jul 26, 2009 at 01:28 PM.
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Old Jul 26, 2009 | 02:09 PM
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Originally Posted by glassman74

What am I missing? glassman74
Accurate reference info. The page shown above is not correct. '74 production ended in late Sept.74, probably on the 30th. Your tag was attached on that day and is the 6th from last car built for the model year.

The body colour chart is also wrong as GM had shifted over to a 2 digit code from 3 digit. 80 is Orange Metallic, L is for lower. Two tone cars had L and U for lower and upper body paint.
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