DIY glass fibre plenum chamber? Bad idea?

[Shannen Durphey]

xxalexx at ix.netcom.com wrote:

<snip>

> I blew a vortec manifold to pieces, on propane.  dealer said plug should
> have popped first
> Alex.

  Having some trouble getting the acceleration enrichment correct?

GM had to recalibrate a bunch of cars with the 3800 engine in the field
because some of them were blowing the manifolds off. And they weren't running
flammable vapors in the plastic manifolds. : O

Shannen