I need a fan belt diagram chevy van 350 tbi -88

In the link

https://www.google.com/search?q=5.7+liter+engine+chevy+1995+chevy+350+tbi+vacuum+line+diagram

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Pictures in the images tab and also videos

https://www.google.com/search?q=chevy+350+geneva+serpentine+belt+diagram

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www.ask.com/v-belt/diagram/layout/1977/chevy/winnabago/350/cubic-inches/with/air-condition/

Look for something like this either stuck under the hood or on the fan shroud

Here, is what I think you are asking. The TBI intake from a 91 will fit the same size engine from 88 to 95. The Vortec didn't come out till 96 I believe. So if your 91 is the original engine then it is not a Vortec motor. If you want to swap your 5.7 with another 5.7 (5.7 = 350) Then the 88-95 should work, Just double check your sensors and locations as the plugs may be different and or in different locations. I know my 88 GMC and my 94 chevy (both K1500's) were a little different. Hope this helps.

Something to do with the wires

Yes.

there should be a diagram under the hood showing you how the belt goes on but try this website its www.autozone.com to see if they have your van listed i also would like to give you a place that sells only GM-parts only its Schram auto & truck part the number is 1800-292-1032 if you ever have a part that is hard to find.

I know from Experience on Rebuilding my Chevelle www.PainlessWiring.com has everything that you need for this Conversion.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528006c087