Leaded auto fuel should be available in most states as "racing fuel". It's
fairly expensive at $3.50-$4.50 per gallon, but it has lead content way
above what was in pump fuel toward the end. Octane in in the 105 to 115
range depending on how the company measures it (motor, research, etc). It
can be cut by 1/2 to 3/4 with un-leaded petrol and still give valve
protection and increased octane. Check with a speed shop or machine shop
doing competition work and they can probably steer you to a source.
Bob Skillman 47TC, 59MGA twin cam, 68MGC
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