All super cool, I on the other hand I have seen enough LS swaps to choke a mule. Hence I rebuilt my 1960 Caddy 390 with custom made ( Race Tech ) 9.5 -1 compression pistons, Iski performance camshaft, Electronic HEI distributor and a Holley Sniper fuel injection system. Numbers matching, very cool and go like hell! listen, you cannot run a 10.5 compression engine today, lets start retrofitting the old stuff!  ... View more

I have to agree with Tony T. VR1 Valvoline is the way to go. I run a 60 Caddy and a 1951 Chrysler Crown Imperial with the first 331 Hemi in it.  no issues, no leaks, no noisy lifters. I tore the caddy engine down as we need to reduce the compression ratio from 10.5 to 9.5 and the cam and lifters were mint. over 100,000 miles on the old girl and time was time ... View more

I have owned a 1960  Coupe for over thirty years and love the car. Hard on fuel but very reliable. our family have put over 100,000 Miles going to car shows with the Children and now they are adults we still enjoy it. into a second engine rebuild to lower the compression so we can run pump gas.  ... View more

Lets not forget 1951 Chrysler 331 hemi and Caddy's first overhead Valve V8 also at 331 cubic inch introduced in 1949 ... View more