Q Jet questions
How far should the sec. throttle plates open on a stock GM intake?, and how far on an open plenum intake. I know there is a measurement for the sec. air valve door opening, anybody have that number?, thanks
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Re: Q Jet questions
Throttle plate 90* +or - 5
Air valve most look like like they should open a little more . When I did test carbs back to back I didn't find any topend gain. ---Trevor |
Re: Q Jet questions
I spent days fooling with it on the dyno never found anything unless u got it way out .Then it hurt the power.
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Re: Q Jet questions
Hard to test a Q-Jet on a dyno because most of them don't have wheels...
Bob |
Re: Q Jet questions
Evan harder if you race track is a 100 miles away.
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Re: Q Jet questions
Quote:
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Re: Q Jet questions
Quote:
That's like having a Drag Strip in your back yard...... Bob |
Re: Q Jet questions
Bob,
Jim is used to having one in his back yard (Houston). Now back in SoDak, that's no longer the case. Jerry |
Re: Q Jet questions
Secondary air door, 1.280 - 1.320 from the back of the air horn to top of secondary air door.
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