Road Runner Nest

Guys, I'm thinking of building a 440. I have access to one locally real cheap, unmolested. Do you guys recommend synthetic, and which weight?

I was told to not use synthetic till after the breakin of the engine,then use synthetic.10w40-30

It depends but if you are using a flat tappet cam i would not use synthetic.Read the last paragraph from this crane cams bulliten:

http://www.cranecams.com/pdf/548e.pdf

You also might consider an additive that contains zddp (zinc), helps lubricate the lifters and other parts.

BRIAN

You bring up a good point ,I was reading hotrod mag about this problem,so here is good reading for some.

http://www.hotrod.com/techarticles/engi ... to_06.html

http://www.hotrod.com/techarticles/engi ... ction.html

http://www.hotrod.com/techarticles/engi ... index.html