Re: Most reliable power out of a 91 OHV?
Headers, port/polish heads and upper/lower intake manifolds, replace hydrolic lifters, pushrods, and rockers while you're in there. You can cam it, there's some decent cams out there for this engine. I wouldnt bore the cylender walls IMO. Dont do Cold air intake, it does nothing. Same for throttle body spacers. Get a bigger throttle body if you feel like it. DUI ignition system, double platinum plugs, throttle cable mod. I could go on and on. Just depends on what you feel like spending
1993 Ford Ranger Ext. Cab | stepside | 4x4 | 4.0L | Lifted | 35" BFG KM2s | MT Classic IIs | Dana 35/Disc 8.8 with 4.56's | Duals | Etc