I recently bought a 1985 G-20 Conversion van that is in dire need of a tune
up, but I don't have any info on the truck itself. I need to know what the
timing (At the balancer) marks are and where ZERO is on the indicator. Also
I think (if I am correct about normal GMs) the first cylinder in the "H" 307
should be on the drivers side, but I am not sure if that is correct. One
other thing on the whole "H" thing is it the eighth digit in the VIN as
there is another 307 for this truck as far as I know and the sticker tells
that it is a 5.0L. Further what should the firing order be on this motor if
my homework is correct with the "H" VIN code.
Also is there anybody that has a "real" wiring diagram for the thing, and
not the Hanyes manual style (meaning the Motor Manual type) I and trying to
rewire a small annoyance that the former owner wired. It seems when ever the
horn is blown or the power locks are used (in either lock or unlock) the
wipers make a single stroke across the windshield.
Thanks for any help