Jimmy,
Basically you want 12V(crank and run) into the HEI Coil. I run a
ground from the coil as well.
The closed chamber heads obviously increase compression. The open
chamber in general seem to be slightly more friendly to the environment
but truth is neither were overly efficient in design. I like the open
over the closed because they tend to flow better stock and do well with
mods. I am only discussing Oval ports here. They are great. 781 049
are choice pieces. I can't remember the casting maybe 292 off of 71-72
chevelles but they aren't bad either.
I'll try to give you a call tonight. More BS than info :-)
Walt
http://www.personal.kent.edu/~wbainey/CHEVELLE.htm
On Nov 13, 2007 3:04 PM, Jim & Chris <[EMAIL PROTECTED]> wrote:
>
>
> First,I was wondering if any one can explain how to convvert from a
old
> style points distributer to HEI ? or suggest a link. Secondly, I was
> wondering what the advanteges or differences between open and closed
chamber
> heads. Tomorrow I am going to look through old parts that have been
sitting
> in a barn for the last 10 years and there are a set of BBC closed
chamber
> heads that are bare among other misc. parts. don't know anything
about them,
> but I am going to get the casting #'s off them,but would like to know
what
> you guys think. Jimmy C.
