Radiator

[Rocket350olds]

Not sure had my machine shop bore and fit the pistons

 

[fleming442]

What's oil look and smell like? If it's dark and smells like exhaust, it should be loose enough and dark from blowby. If it's dark and burnt, it's probably too tight.

 

[olds307 and 403]

I would get the final honed dimensions from the machine shop. The box say .001" and the instructions say .002", not enough. You want .004" minimum. Try a rad, if it doesn't fix it, you know where to look next.

 

[Rocket350olds]

Comp cam extreme energy 42-223-4