The Chevrolet small block 400 will bolt in place of the 305 but be sure to use a 400 flywheel or flex plate. Do not use the 305 flywheel or flex plate on the 400.
The 400 wasn't available in the El Camino in '78.
I owned a 78 Monte Carlo with a stock 305 2 BBL carburetor. If I remember correctly, the HP was 145MPH.
it should be any 4 bolt main small block, like a 305 350 383 400 327 you could even upgrade to a big block, but you may run into some trouble with engine mounts.
GM started using the turbo hydromatic 350 in 1969 and used it with modifications until 1984.
You don't...
Same as a 78 chevelle.
yes it should.
no
19.5%
If you're referring to the wheel bolt pattern it is 5x4.75
85W90 gear oil
400 - 2x = 244 Therefore, 2x = 400 - 244 = 156 Therefore, x = 156/2 = 78 Therefore, you would be 78 years old.