Installing a 91/92 TPI engine in a truck. Ordered the serpentine through Advance Auto parts that gave me belt # 945K6.

The picture is with the idler compressed and the belt which is too short.

The belt is at least 1" too short. What part number do you folks have?

Using the 5" A/C delete pulley..not the 4-3/8" version.

Thanks

Update:

Found this link:

https://www.thirdgen.org/serpentine/

Has anyone used the 968K6 belt?

 

There's two ways to route the belt... short vs long. Belt lengths from AdvanceAutoParts
Your picture shows you are using the longer 88 routing. The 89-92 use the "short" routing with a 94.5" belt. Try installing using the later method. You might have interference between the tensioner and the AC-waterpump leg. But, the belt shouldn't be too short. In fact, without the length down and around the air pump, it is probably too long now.

98.03" = Air - crank - water pump - power steering (88), or...
94.50" = Air - water pump - crank - power steering (89-92) as see in the previous pictures.

Thank to SEThirdGen for the diagrams (88 vs 89-92):


From this thread.
And this thread

 

Thanks MoJoe...appreciate the prompt reply..will give it another try.

My update:

Just went out and routed it according to the 89-92 pattern, the 945K6 belt won't work, just too long. From my measurements using a nylon strap 83.50" would be full idler extension.

83.5" would be tight but 84.50" would create the best alternator to A/C (via idler) clearance.

Figure 84" to 84.5" is my target length.

I'll try the 845K6 belt.

 

Good luck with that.

If that doesn't work, you could try the longer belt/routing. Reading the link you had, the 98" will be too long without the air pulley, and the 96.8" (968K6) belt should work (in the '88 routing pattern).

 

Tried others but I am going to use belt # 965K6...shortest one that will fit..Thanks for jumping in MoJoe...went with the 1988 routing. On to repinning the ecm....

 

Thanks! Didn't realize there were 2 different routing patterns! Got the new belt routed, part number 980k6! Fit perfect. Water pump pulley is from caprice, bout 1/8 inch smaller in diameter than the 92 camaro and I may have the larger a/c bypass pulley! All in all nice fit. Now to solder some wires on the alternator plug to make it long enuf, unless you guys have a better idea!!