Reply to "SS valve mfg's"

panteradougMember

You can use any valve in any engine if you can make it fit.

They are a little like tires. Those are made in various sizes and you apply them to your application.

A 1.71 exhaust valve for a 5.7 L engine is already huge. MANY of the later aluminum racing heads reduce the size to 1.60 to 1.65, but not all.

The same with the 2.19. Some go down to 2.05's.

The original valve sizes in the Boss 302 and the Cleveland are actually 427 valves with reduced stem diameters.

Dan Jones testing showed that the 4v heads flowed 298 cfm at .600" lift with just a nice 3 angle valve job.

My A3's show 330. They actually outflow the capability of only 357 ci.

You don't need bigger valves in this engine.

1/23/186:39 PM

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