i understand that 4v quench heads will work *very* well, even on the street - *if* you use the stinger port plates w/them. these fill the dead-spot on the huge ports, substantially increasing velocity, w/no reduction in total flow. this is what i will be using on my mildly-built engine. desktop dyno sez 460-475hp (+/-5%). for my engine build specs, see steve flier's thread on compression ratios/octane ratings...
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.