The 1985 one with say, Whirl, Roadbuster, Omega supreme etc. is 59.7 cm (23.5") long and 21.3 cm (8 and 5/16") wide.

The reinforcements from Cybertron with power dashes and time warrior 38.3 (15 and 1/8") long and 14.4 (5 and 5/8") wide.

Can't seem to find any of my '84 ones sorry.