'7747 & two A.I.R. valves - CrossFire retrofit

[don.broadus at exeloncorp.com]

I have noticed that the 305 engines didn't use the AIR pump but the 350's
did.
My 88 GMC 1500  305 TBI 747 ADTZ 3466 did not have the pump or manifold
fittings but my friends
88 Chevy 1500 350 TBI did have the pump and manifolds, If I remember
correctly, AIR was only
injected on the Passenger side exhaust manifold  

> -----Original Message-----
> From:	steve ravet [SMTP:sravet at arm.com]
> Sent:	Friday, May 11, 2001 9:15 AM
> To:	gmecm at diy-efi.org
> Subject:	Re: '7747 & two A.I.R. valves - CrossFire retrofit
> 
> I thought I remembered from the JTR book that truck engines didn't have
> AIR.  Looking at the book now I don't know what gave me that idea.  I'd
> like to remove the AIR pump from the 350 in my S-10, the engine bay is
> extremely crowded on that side, and the pump pulley is close enough to
> nick the lower radiator hose.  I thought converting to a 747 and using
> truck style accessory mounting brackets would do it.  Is there a
> truck/747 application that doesn't use AIR?  I've been browsing
> carparts.com (good idea BTW) starting with the older HD trucks but
> haven't found one yet.
> 
> --steve
> 
> Shannen Durphey wrote:
> > Hopefully someone else can be more help with the air valves.  I'd need
> to see more
> > than an electrical diagram to understand which valve does what.
> Sometimes one valve
> > performs multiple functions.  There have been too many variations over
> the years.
> > I don't remember them on a year by year basis, and I definitely don't
> remember the
> > name changes GM has applied to the different valves through the years.
> 
> -- 
> Steve Ravet
> steve.ravet at arm.com
> ARM,Inc.
> www.arm.com
> --------------------------------------------------------------------------
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