If you're referring to the wheel bolt pattern it is 5x4.75
what is the bolt pattern for 1985 el camino
5x4.75
4 3/4
The 400 wasn't available in the El Camino in '78.
5 x 4 3/4
Yes. They should bolt right in.
THM 250/350 accoringing to bolt pattern and Haynes manual
5x4.75 or 5x4 3/4 same thing
You don't...
Same as a 78 chevelle.
85W90 gear oil
sure, it will bolt right in.