vacuum diagram for 7.4 v8


Asked by May 24, 2014 at 11:52 PM about the 1988 Chevrolet C/K 3500

Question type: Maintenance & Repair

It is for a 1988 Chevy Scottsdale 454

5 Answers


Have you checked in your engine compartment? Vacuum diagrams are normally posted either on the underside of the hood, front edge of engine bay or on top of the radiator.


I have checked their and its all faded off. I am installing my throttle body injection and trying to figure what vacuum lines hook up lines to it. I should have taken a picture before undoing them.


Yes that's always a good idea. I will try and find you a diagram.

99,435 -- check this out. Scroll way down thru the posts and there is a picture that you might find helpful.

1 out of 1 people think this is helpful.

Also have you tried They have some of these diagrams.

Your Answer

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