HOLY CRAP! The stealership wants $667.14 for a new distributor. Isn't that a bit much? At that price, I'm going to get the base unit from CarQuest for $230 and reuse the cap/rotor. Can anyone tell me if the Opti-I and Opti-II are interchangeable (except for the plug)?

 

It was full of rust and metal shavings. The opti wheel was covered in rust dust, so was the cap and rotor. Water was probably getting in through the input shaft and fouling things up. No doubt it was the problem.

 

You can not switch the vented and non-vented Optis, unless you get a new timing set, timing cover, harness and a cam with a larger pilot hole and a longer dowel pin. Here is the info:

http://para.noid.org/~muttvette/opti.html

Spend some time with the "search" feature. There is deep (~50%) discount pricing available on genuine GM parts, and the sources are regularly posted here. Shoebox has part lists, part numbers, part sources, etc:

http://shbox.com/1/4th_gen_tech1.html

http://shbox.com/1/Parts.htm

http://shbox.com/1/4th_gen_tech2.html#Dal_and_Jason

What did you mean when you said: