Re: 4.0 ohv to 347ci swap..
its about the same as a 302 swap. u have to have 28 oz flywheel ,balancer
i have a 347 from chp with pro comp 210 heads. this is a track only truck. my comp ratio is around 12:1. i have a 750 double pumper carb,long tube headers, dual 3 inch exhaust with race bullets. tring to line all the problems out best pass so far is a 13.0. taking it to the dyno soon then back to the track.
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