perttyboy Posted January 8, 2013 Share Posted January 8, 2013 I have a 1989 superliner with a 4valve e-6 350 I am looking for a performance shop or a shop who knows how to get 100 to 150 more hp. Quote Link to comment Share on other sites More sharing options...
slpwlker Posted January 8, 2013 Share Posted January 8, 2013 If not mistaken. E-6 at 350 is wound up pretty tight as it is. They don't handle much more then that and stay together. I know it isn't what you want to here. Quote Link to comment Share on other sites More sharing options...
Lmackattack Posted January 8, 2013 Share Posted January 8, 2013 Getting more power is easy, keeping it all bolted together is not so easy. A simple $400 pump re calibration would get you another 75hp-100hp. But your fuel mileage will suck and you would have to feather the throttle As the power would be like a lite switch.. This extra power will stress the pump, injectors, and internals. Not to mention more smoke and higher egt when lugging. Quote Link to comment Share on other sites More sharing options...
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