Mark Gorney

[Dale S.]

Back on April 4th, Mark Gorney posted on the 3890421 smog pump pulley for 1966& 1967 C-2 with K-19, as the web side rearward. What is the web side? Thank you in advance. Dale

[Joe L.]

Re: Mark Gorney

Dale-----

AIR pump pullies are one of the few pullies that can be installed "either side out". Since the pullies are "asymmetrical", doing so changes the alignment of the pulley groove with respect to the DRIVE pulley.

If you look at a typical AIR pump pulley, you will not that one side is "shallow" and the other side "deep". On the "deep" side you can see the underside of the pulley groove. The "web" side is the "shallow" side, as described. Sometimes, the "shallow" side of AIR pullies has a series of VERY shallow, "radiating grooves". I believe that this is where the term "web" side comes from, but I'm not sure of that. In any event, the web side is the side OPPOSITE the side that you can see the underside of the pulley groove.

[Mark G.]

C2 Small Block K19 Pulley Combinations

Thanks Dale for the interest about the K19 assembly and especially to Joe for the detailed pulley description. A quick check on the ‘421 pulley showed a 1/4" offset by reversing the mounting position. The L79’s used two different size spacers, which may have to do with the drive pulley stack-up, crankshaft and w/pump deep groove style or not.

I am working on a list of pulley combinations for ’66 & ’67 SB’s with K19 including C60 and N40. My ’66 300hp has smog, A/C and a Powerglide so the 350hp setup is difficult for me to understand. Joe, I’ll send you a copy to check my work. How many “KH” engine codes were produced?

Mark #35760