For the carb guys and/or the part fitment gooroos

[jerry burt]

6cuda6 - Here is a PDF by Bob Drewes that gives you a complete breakdown of all the GMC quadrajets and changes through the years.
http://www.bdub.net/Quadrajets_in_GMCs.pdf
Probably more info than you want but...

This and many more links can be found at:
http://www.bdub.net/oddsnends.html
This is a handy page to bookmark as it has many links, in one place, that we normally have to hunt for on the various club pages.
I don't know who put the page together ?Billy? but thanks.
--
Patti & Jerry Burt Fresno, CA.
73 Gmc 26' Canyon Lands
77 Palm Beach - Parts Coach - SOLD
Members: FMCA - GMCMI - GMCWS
A truly happy person is one who can enjoy the scenery on a detour.

 

[charles boyd]

Sir, after re-reading my reply it looks like I was taking credit for repairing Jim’s carb at Tallahassee. I did take it off and chase tools and
parts but it was Hubert Rowell that did his carburetor magic that he does so well..

note.. the last 403 I worked on with a flat spot off idle ended up being a bad carb gasket under the top plate. I took it off to inspect and replace
accelerator pump. It was at the GMCMI rally in Tallahassee. Jim Bounds had a used carb he gave me for parts and I salvaged the pump and gasket.
Most people remove that idle pusher and the vacuum valve on the front of the pass head and the solenoid on the front of the drivers head, but being
OCD ( old, cranky, dyslexics ) I put it back on.

> I think the best ever was Cadillac's 1986 4-6-8 engine.... one of the few cars i never wanted to work on and didnt care what they wanted to pay
> us...i know a few techs that would have liked to hang the engineers that designed that thing.....lol.
>

> > I can (unfortunately) tell you how it ended up like that..
> >
> > After some poor dyno jock finished doing a map of spark and fuel loops, somebody looked at the data and said "we can't have this - fix it."
> > That meant push off the performance part of the map into a better emissions part of the map. That was a what ever it took effort. You would not
> > believe some of the cheap tricks that were tried. The one I always admired was holding the advance curve back in the lower gears so the extra
> > heat would get the catalyst lit. Another good one used to be keeping the engine near stoch (stoichiometric - ideal) but making alternate between
> > rich and lean to keep the cat hot.
> >
> > Great times they were - NOT
> >
> > Matt - the refugee from dynoland

[/quote]

--
C. Boyd
76 Crestmont
East Tennessee