The orange and yellow 1969 RPO ZL1s are both at Bloomington this week, is this the first time both have appeared at the same event? Timely show, especially as recently uncovered ZL1 development documents in the GM Heritage Center seem to be starting to clear up some of the mysteries and myths of the 1969 ZL1s. One GM document reportedly temporarily authorizes closed chamber heads specifically for type L88/ZL1 engines with M40 automatics right before the orange car was built, so sounds like that debate can be put to rest. Has anyone had a chance to see the documents in person at Bloomington?
Last edited by rynoshark; 06-21-2019 at 08:28 AM.
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06-21-2019, 08:24 AM
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