1959 - 1960, GM B platform first generation.
1964 - 1967, A body platform second generation.
1968 - 1972, A body platform third generation.
1973 - 1977, A body platform fourth generation.
1978 - 1987, G body platform fifth generation.
A lot!!
Yes, 1968-1972 had the same frames.
What are the dimension of a 1974 El Camino
The length of a 1967 El Camino is approx 194 inches The width is approx 72 inches
1968-72
A body
Yes, '68-'72 El Caminos (Gen 3) are the same body from the firewall back. Frames are the same.
It is a G Body.
There were no El Caminos made in 1988. Production of the El Camino stopped in 1987, but the ones that were left over were titled as a 1988 vehicle.
El Camino
No , the only compatibility for a 1970 Chevelle is a 69-72 Monte Carlo, Chevelle, El Camino... hope that helps...
No, 2 differen't body styles.