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Id check the numbers. If its an early (pre-68) engine Id look at another cam, your compression will be absolutely terrible. Maybe even in the 7s.

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I Agree. I had a '67 383 with 906 heads (I know, open chamber, another problem). I put that cam in and the car was a dog. It idled nice but had no power, even with a 4-speed and 3:91 gears. Pistons on pre '68 383s are way down in the hole.

Easy chack, look at the pad just in front of the passenger side head. If it's A, B, or C, don't bother. Just my

Good Luck,
Frank