Infrared gun told me #4 was pumping @ambient temperature. I had drilled out a jets on a BBD which mad it pig rich on the dyno. I may have wiped the rings on my low mileage 198. It has been sitting since 2009. Driving over the road left me no time to play with it. When I came off the road it was...
To my knowledge Offy never built a dual plane. The 360* is the designation for a single plane. IIRC all of their V8 intakes were marked 360*.
I have one sitting on the top of my 360 in my work van. It has the 318 sized ports as the manifold I wanted was 340/360 specific. It ran fine with a Comp...
240 Ford inline 6 had the valve seals laying in the bottom of the head. (claimed 9.2:1 factory compression) Tons of carbon in the chambers. 100K on it. Smoked bad, had tons of compression due to the clumps of carbon that made the chambers smaller. Tons of crap on the pistons too. Burned a lot...
I agree light sludge. Diesel oil is high in detergents. I run that in my cars. Rotella semi-synthetic. Had the intake off my '97 Lesabre a couple of weeks ago. I could see the valve stems. Clean like new. 230K+ on it. Really clean every where else.