View Full Version : 8.1 Head...Unleaded?
49coe
01-03-2009, 03:46 PM
Are all 8.1 compression ratio heads set up for unleaded fuel?
gudjeon
01-03-2009, 05:18 PM
Short Answer - No
The only true way to ID an unleaded head is to visually inspect for hardened steel exhaust valve seats.
Jeff Aronson
01-03-2009, 06:18 PM
Gudjeon is right but it would be hard to think that someone would set up head these days without including hardened valve seats.
Jeff
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