[todd]

What are 390 heads? My old motor had 390 heads and I thought it was a 428. Do the heads change the engine size? I guess that 390 heads are the same as 428 due to the fact that they are on a 428 block. I am a little confused on why they are called 390
heads. How are they different from 428 heads....or are they?

I know that there are several gearheads that may help



Todd