my slant buildup
It is moooooooooooost important to use break/run in oil with a FT cam....if you want the cam to survive.
For the initial cam break in, for the three slant motors I have used a generic 10w30 motor oil with a cheap oil filter and a bottle of Comp Cam break in additive. For those engines I had coated the cam during engine assembly with Moroso Moly cam break in paste. After the engine run in and 3 or 4 motor starts to get the engine completely up to temperature then completely cool down I drain the oil and remove the filter and install the kind of oil and filter that I intend to run with 1/2 bottle of Comp Cam break in lube. I will do another oil and filter change and add the remaining 1/2 of break in lube at approximately 500 miles. From there it is my normal oil service schedule.
Prior to the engine initial start, I crank the engine with the sparkplugs out 10 to 15 seconds at a time until oil pressure builds.
A couple of things that are critical for a good cam run in:
1) that you verified that the lifters spin easily in the bores during assembly
2) that the motor when it has the spark plugs in, starts with out delay and excessive cranking. Prime the carb, use ether spray, know that the ignition is ready.
I have the valve cover off and mark a line with a Magic Marker on each pushrod. Makes it easy to see the push rods spinning. If one is not, stop.
Quickly verify the pushrod rotation and with the engine running, slap the valve cover on.
I believe that you are running 318 springs, and a bigger than stock but not a huge cam, even if they were the popular 340 springs that is not huge spring pressures or cam ramp angles.
You don’t need $17.95 a quart oil at break in.
