I know this has nothing to do with the Future Automotive Section, but I also know many of the guys here are in a better position to answer me then the guys in the lounge, so here is my question.

There is a little debate going on over at ls1tech.com about the cost of a pushrod engine to assemble then the cost of its DOHC equivalent. What I am looking for is some actual numbers to use in the arguement that the pushrod engine is cheaper to produce; something besides just heresay. Any help on this would be appreciated.

 

I assumed it is common knowledge that pushrod engines are cheaper to produce. A simple google search will show many different articles doing a comparison of the two types always use the cost as a major factor in the differences. Pushrods always being cheaper.

If someone believes OHC is cheaper, then that is their problem.

 

Where's the debate?

32 valves > 16 valves
4 cams > 1 cam

 

You would be suprised how much trouble I am having discerning direct costs for various engine productions.

That doesn't go over too well in an arguement though. I need some more concrete info.

 

Ha exactly. Look at the relative masses and parts if you can't find anything else.

 

Less cams, valves, springs although OHVs use pushrods which DOHCs don't have.

Don't forget, for DOHCs, there's two relatively expensive (and heavier) heads that go into a V configuration engine... that adds weight to the top end of the engine. That being the case, DOHCs also have two cam phasers if they run VVT.