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Forum: Lounge 12-27-2022, 02:32 AM
Replies: 41
Views: 13,182
Posted By rynoshark
Over the last few 3-4 years, a trove of...

Over the last few 3-4 years, a trove of significant documents were discovered in GM's Heritage Center on the ZL1 development program and RPO ZL1 production. These completely changed the discussions...
Forum: Supercar/Musclecar Discussion 12-17-2021, 08:21 AM
Replies: 71
Views: 49,757
Posted By rynoshark
Additionally, the “427 CUBIC INCHES ZL1” console...

Additionally, the “427 CUBIC INCHES ZL1” console trim plate/badge (part number 3958746) was also marked on GM internal document Notice of Production Change C69-39 with the handwritten "12-9-68" date.
Forum: Supercar/Musclecar Discussion 12-17-2021, 08:06 AM
Replies: 71
Views: 49,757
Posted By rynoshark
On point #1 above: From two reports that showed...

On point #1 above: From two reports that showed 1969 model year production, both had 2 RPO ZL1 listed. If I recall, one report was through September 1969, and then the second report showed all of...
Forum: Supercar/Musclecar Discussion 01-14-2021, 09:40 PM
Replies: 71
Views: 49,757
Posted By rynoshark
First Corvette RPO ZL1 Availability

Per annotations on Chevrolet's internal NPC "Notice of Production Change C69-39" documentation, the first date that a ZL1 engine assembly was available for production installation at the St. Louis...
Forum: Supercar/Musclecar Discussion 01-05-2021, 05:26 PM
Replies: 71
Views: 49,757
Posted By rynoshark
ZL1 Production Records

I posted this on CorvetteForum (https://www.corvetteforum.com/forums/c3-general/3912713-1969-zl1-production-9.html), but since this thread sent me an update alert today, I figured I'd cross post this...
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