'67 L79 Power Steering belts

[Joe L.]

Re: '67 L79 Power Steering belts

Joe,

I just realized that the AIM and Mark Gorney's pulley chart are in conflict on another pulley on N40-A6. The bottom LH drawing on N40-A6 calls out item 8 WP pulley, GM 3890419, but Mark shows that WP pulley is for L79 + N40 + C60, so GM 3890419 is NOT a deep-groove pulley, which means that N40-A6 is in error again, if I understand correctly.


Dennis,

(if I have this wrong, someone please correct me):

To correct my earlier error (post 3), Mark Gorney's pulley chart shows the correct WP pulley for L79 + N40 is GM 3770245. I looked up GM 3770245 (check eBay, there are several) and it does not look like the WP pulley in your pictures, but the wrong pulley, GM 3890419 does look like the WP pulley in your pictures.

The blueprints for the following pulleys are printed on page 23 of the Corvette Restorer, Volume 36, Number 3, Winter 2010:

GM 3829387 (alternator pulley for L79 + N40)
GM 3858533 (crankshaft pulley for L79 + N40)
GM 3770245 (water pump pulley for L79 + N40)

If I have it right this time, the addition of the cast iron GM 3834720 PS pump pulley should complete the pulley set for L79 + N40.

Mark Gorney's pulley chart was published in the Spring 2009 issue of Corvette Restorer (Volume 35, number 4). I think he has posted an updated/corrected pulley chart here on the TDB since that time, but page 19 of the Spring 2009 Restorer shows the same pulley set up for the L79 + N40 option combo as shown on his updated pulley chart.

Scott and Dennis-----


These are the correct pullies for 1967 L-79 with N-40. The GM #3858533 is still available from GM. The 3829387 alternator pulley, 3770245 waterpump pulley, and 3834720 power steering pump pulley will have to be obtained in reproduction, NOS, or used.

Obtain the above pullies + 2 belts and there will be everything needed to make it right.