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Re: a few ?'s about my 03 4.3 engine
stock you have around 180 to 190 horses, an aftermarket exhaust, and e bay cold air intake and no problem you have 210 horses... dont do it. only advice i can give you on going to a tpi or cpi, its old tec. for a reason, if you did it you might as well swap the whole moter out, and you would need the computer and harness from the old moter, that kinda time and money, buy a small block of some sort
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