Head porting: shrinking the intake and exhaust runners w/e..

External Since: May 05, 2005 Posts: 10

Anyone ever done this? I got hold of a Kinsler magensium 3 piece EFI
intake that was used on a 80's turbo gtp car. The thing is like new and
very nice. The intake runners are 11 inches long with street sized
outlet ports (i guess because it was tubrocharged) so it can be used on
a street car. The downside is that it was used on the 867 'Pontiac'
(chevy SB) raised runner heads which have intake runners really too big
for a street car. I've seen these befer where someone had decreased the
size of the runners and I'm wondering if anyone here has ever tried it.

cheers,
Bill

External Since: Jan 05, 2006 Posts: 11

I remember an ancient Hot Rod magazine article on
* Cylinder Heads of America * where they heat the heads in oven,
TIG Weld metal, again bake heads, gradually cooling Than heads
are ported. I'd have no faith in Epoxy, couldn't withstand the heat.