Dick Harrell Prepared Chevy ll’s

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**copo-2** · #15 09-29-2025, 09:33 PM

In the first page of the article, (post #1) it mentions the Turbo-400 being redesigned for competition. This automatic transmission was developed for the 9738 Gibb COPO Novas to qualify them for NHRA SS competition. Since these cars were built and delivered the first 2 weeks of July 1968, the bulletin is dated July 12.

Since Dick Harrell used some of these Novas to modify, this document explains the modifications for initial 50 L-78’s that DH would latter upgrade including the 427. Also, the redesigned torque converter.

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