I have a few Oldsmobiles, 65 F85 and 67 Toronado, have owned several over the years, always tweaking and making changes. Plan to put a 425 or 455 into my 65 F85, hoping to find some info here on this conversion. Have a few extra 455's if anyone interested, few extra sets of "B" and "C" heads, in SOCAL.

 

Welcome to the site, post some pics. We currently have a few major projects that include 64/65's.

 

Welcome. All big block Olds motors are externally identical, so the 425 or 455 drops in your 65 as if it were a 1965 442 with a 400 motor. This is a complete bolt-in.