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Old Dec 1, 2024 | 12:34 PM
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Hi everyone - new to the forum. Recently inherited a 75 C3 Corvette from my late brother-in-law. Been some time since I worked on cars so will be searching the forums for answers and asking for advice.
Car body wise is in very good condition, interior not too bad but some minor work to do.

Engine is starting well although idle at around 900 rpm is a little rough but working on that right now. Have seen some interesting posts on removing the emission control system - will look into that later.

First question which I may also post on a specific forum as not sure if it will be seen here.

Engine is L48 matching with VIN - so thought I would check spark plugs - according to the manual the correct plug should be a R44TX set at .060 - however the plugs installed are R45TS at .045 which are the plugs for the 76 engines.
Did someone previously install the wrong plugs or is it a 76 engine in the car.
The title shows it as a 75 and looking at other posts one of the differences are the vents behind the rear window are on the car - believe they were deleted in 76.

Want to make sure that I put the correct plugs in - any advice. FYI the plugs I removed do have some heavy soot type deposits but no oil.

Thanks
Old Dec 1, 2024 | 01:47 PM
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Welcome, and good luck getting it back on the road, and we like pictures!
Old Dec 1, 2024 | 02:51 PM
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Old Dec 1, 2024 | 03:35 PM
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Welcome aboard!!!!
Recommend post questions on your ‘75 in the C3 section.
Old Dec 1, 2024 | 06:33 PM
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Welcome...
Old Dec 1, 2024 | 08:28 PM
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Welcome! Sorry for your loss
Old Dec 1, 2024 | 11:50 PM
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Welcome to the forum and sorry about the passing of your BIL. Best of luck with the C3.
Old Dec 2, 2024 | 08:11 AM
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Welcome aboard and good luck getting it sorted.
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Old Dec 2, 2024 | 12:51 PM
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Old Dec 5, 2024 | 09:10 AM
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Old Dec 5, 2024 | 07:40 PM
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Old Dec 6, 2024 | 07:22 AM
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Old Dec 6, 2024 | 11:55 PM
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Welcome, Go to the C3 section for info..
Old Dec 8, 2024 | 06:53 PM
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Old Dec 10, 2024 | 10:58 AM
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