1969 Camaro double COPO (ebay)

[GMH454]

Not sure about trans but there is a substantial lag on the 4 bolt solid lifter short blocks in 1969 due to a) a huge drop in demand in 1969 for them in Corvettes (about 1/2 the solid lifter blocks sold in 1969 than were sold in 1966 but 2 1/2 times the hydraulic lifter) and the union strike which cost a month or more in early 1969.
The union strike would have effects on many components but the blocks delay was primarily effected by demand.