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You need to have 20 PSI for the map sensor for the ECM. Other than that, should be good. The CAM is going to affect Vacuum PSI for sure.
I used (Sons Jeep) a 1978 Block .030 over with newer heads, flat top piston (12:1), stock cam, modified the wiring harness with stock ECM and no problems at all. Mine is a 350...tons of power for a jeep!
Break the 32" tires free rolling in second gear and punching it!
vrrruuuummm, vrruummmmmm!
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Keep them on all 4's
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