Cover up your distributer and any wiring (coil). You can use several products, but I recommend Super Clean or Simple Green. I like Super Clean better. Spray it on, and let it sit for a while and then rinse off. I use HOT water, as it helps to remove the tough grime. Becareful not to crack your block though.
Do not use Gunk, as it is a Harsh abrasive.
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1994 Mustang Cobra
308ci, ported heads, Crane 2031 cam, Vortech S-trim 11#, FMS 1 5/8 headers, BBK Offroad H-pipe, 2-chamber flows, and several other goodies.
Rebel Racing. Home of Bay Area Mustangs