Spike Morelli
Well-known member
- Joined
- Apr 12, 2015
- Messages
- 480
- Reaction score
- 162
- Location
- Boise, Idaho
- My Car
- 1971 Mustang Mach 1 ram air 351c H-code, fmx, ps,pb, medium yellow-gold, hubcaps and beauty rings.
Next photo here, shows machine blending of Intake ( 1.880") and exhaust ( 1.600"). All seat work is held to the exact same depths, making spring set-ups and chamber CCing accurate.
Shelbys never ran 1.940 intakes in 289s, as some people foolishly attempt. Don't even consider it. Breathing with those intakes is no better and the valve margin hangs over the spark plug recess.
Shelbys never ran 1.940 intakes in 289s, as some people foolishly attempt. Don't even consider it. Breathing with those intakes is no better and the valve margin hangs over the spark plug recess.

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