Donnybrooke Green '70 #s LT-1 Corvette Convertible

**Lynn** · #1 09-05-2025, 12:11 AM

I was going to say restamp.

While on this topic; I know there are significant differences between a "plain" LT-1 and a ZR1 such as brakes, suspension and mandatory M22.

I have never been able to find a definitive answer on what would be different in the engine. There has to some difference to warrant a different engine code. And it can't just be the M22.

**markjohnson** · #2 09-05-2025, 12:30 AM

Quote:

Originally Posted by Lynn

I was going to say restamp.

While on this topic; I know there are significant differences between a "plain" LT-1 and a ZR1 such as brakes, suspension and mandatory M22.

I have never been able to find a definitive answer on what would be different in the engine. There has to some difference to warrant a different engine code. And it can't just be the M22.

I’ve always wondered this exact thing. Maybe GM snuck the Off-Road camshaft into the LT1!

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markjohnson (09-05-2025)

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