Yes, absolutely! The engine code system evolved over the years. For '70s models, it’s primarily numeric with some letters for specific engines. Things got crazier in the '90s with more customization options.
It really did! And don’t forget, GM has a habit of reusing codes. Keep a list handy just in case.
I wonder how often codes get misinterpreted. Could lead to unnecessary repairs! Anyone had a comedy moment with engine code confusion?
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Right? I once thought I had a turbocharged engine because of a weird code—turns out, it was just a dirty sticker! A good laugh in the garage.
Hey everyone! I’m looking for a comprehensive list of GM engine codes over the years. It would be awesome to share experiences with specific engines as well. Any help would be appreciated!
I’ve worked on a few 350 engines from the late '70s to early '80s. They were great for restorations! Let’s share our favorites.
I have a lot of stories about the 454 big block! The engine codes are so interesting, especially when you find the right one for your build. Who else has had success or challenges with a big block?
Does anyone have details on the codes for the 3.8L engines from the '90s? I had one in a Buick and it’s been super reliable! Would love to hear others’ experiences.
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Absolutely! I had a '79 Z28 with a 350. Getting that engine to perform optimally was a challenge, but it was worth it!
My buddy had the same engine, but it started having issues after 200K miles. Any tips on maintenance for these engines?
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I’m curious about the LT1 engine codes—did anyone else find those engines to have great performance? I know they had some unique setups in the '90s.
Definitely! My LT1 has been a blast to drive, though I had to troubleshoot some wiring issues. Those codes really matter!
I’ve always wondered if the engine codes from the early '60s have more quirks? I think there’s a lot of untapped potential from those days.
Indeed! Restoring my '62 Chevy Impala with the original 283 was a dream. It’s good to reflect on where the hobby started.
Anyone ever face engine code mix-ups during a restoration? I bought the wrong parts because I couldn’t read the code. It was a funny but frustrating experience!