I think the 283 used the smaller diameter flexplate with the small bolt circle torque converter and I know it had the small starter.
I think the 2+2 will have had the larger flexplate with the larger bolt circle torque converter and the larger starter, but as long as you use the correct match, converter and flexplate/starter combo it will all work on either engine. The beauty of the GM small block.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
would imagine flex plate from 283 and might have to use the 283 converter as well I am thinking ? not sure on the motor thats on the 350 trans now ? its blue block and a 2 barrel..so ? dont know if flex plate converter and starter would work would be interesting to have the 283 a 3 speed instead of 2
-- Edited by Bill shuba on Saturday 5th of January 2019 08:36:55 PM