Originally Posted By: cubber
OK MBHD. Thanks. Got an email in to the corvair guys. What kind of head work would you recommend for a street strip type application?


I would run 1.94" intake valves, 1.60" exhaust, lumps installed, performance valve job, not just 3 angles,back cut the valves, bowl porting,short & long turn radius' worked over.

Valve guide bosses can be contoured, but do not make them any shorter. They are too short as they come from the factory.

Exhaust port, ported all the way through & opened up.
Intake port, just gasket match,(IMO, you do not really need to open up the intake port window/gasket match),It's up to you though, don't go any bigger than the gasket, or you will lose port velosity, this is critical .

Unshroud the chamber wall on the intake.

Oversized valve springs, cut guides for seals, not PC seals, the better softer ones, name slips me right now, kinda blue/gray in color,,,, ohhh ,, brain fart. Vel,,, del??? Anyways...
Surface the head for a good seal.

It would also benefit you to run a zero deck & even a positive deck,need to get all your measurements correct though.

You can ask Larry AKA twisted6 , Mike Kirby, Mike Barile, Tlowe etc, for more info & pricing.
Cyl head work is where you will get most of your power from ,so if you can, don't skimp on the cyl head. Or your induction set-up for that matter.

Hope this helps.

MBHD



12 port SDS EFI