Quote:
Originally Posted by AirSpeed
The paperwork that came with my new 290hp crate engine says to not use the vacuum advance, it says "the engine is designed to only use the mechanical advance". Am I reading this wrong?
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Wow, I read the instructions twice and it mentioned 2 or 3 times that the engine is designed to run on mechanical advance only. I'm flabbergasted by that.
http://www.chevrolet.com/content/dam...e-12499529.pdf
I don't buy it. GM knows it will get into fights with people installing their own engines, using old dampeners that have slipped, etc. and are really being shamefully coy about how to install their engine with only their own money grubbing interests at heart.
Not only are you going to sacrifice gas mileage, I'd be betting you will over-heat on cruising at lite loads for anything over 15 miles give or take.
Make sure you have a piece of vacuum hose in your truck if you decide to take it for a long drive just in case you need to hook that thing up.