[Jtrux]

Originally Posted by Critter

Yes we have "heard" of it lots of times, but so far they have all been inaccurate or an engine that was put in by a previous owner etc, but never actually installed by GM. Not trying to burst your bubble, but a whole mess of people on here joke about the "rare corvette option" blazer/jimmy/truck. Just warning you.



On a 350, yes, the 4bbl Q-Jet was very common.

Not just common, but mandatory. I think the only 2bbl carbs were put on 307's. And i'd say that it's probably possible for the dealer to swap motors at the owners request and dime but not too likely. My dad has a 77 chevy lwb 4x4 that just plain hauls a$$. A peak under the hood revels bone stock engine, stock carb, intake, manifolds, everything. The guy he bought it from insisted it was the original stock engine, I just couldn't believe it so a little poking around under the hood and you can tell someone has been into it, it may just be a cam install but it doesn't take much to pep one of these motors up a little. Stock cams sucked. So what i'm saying is that it's very possible for someone to crack into it and change the cam, especially if the paint looks pretty fresh or if just the water pump and timing cover are painted. Those are dead giveaways.