GMC 3.42 final drive and Monteagle Mounta

mr.c

New member
Jul 11, 1998
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could you describe what you mean by a 4" cold air hose to the air clearner,
and also an K&N air filter. thanks
Al Chernoff

> Phil,
>
> I lose a couple of mph, but the truckers called me a 'Hot-Rod Motorhome'
> when I passed them. My mpg average is between 10 and 10.5, with a best
> of 13.3 (when not exceeding 50 while escorting a friend's wounded SOB),
> and a worst of 6 while fighting a 40 mph headwind and using
> re-formulated gas. My brother has a '76 Palm Beach, and he averages
> about 8 mpg, but he runs 70+ almost all the time. I have a vibration
> (maybe a bent shaft) and I don't like to go that fast most of the
> time. I generally cruise at about 60 -62 mph as the coach seems to be
> smoothest there As long as the speed stays above 55, I have no problems
> staying on cruise up any hill I found so far. I am running a K&N air
> filter as well as a 4" cold air hose to the air cleaner, but I still
> have standard mufflers and 2 1/2" exhaust pipe. When I first got the
> coach, I lost a lot of speed on long hills, but not since the air intake
> improvements as well as a complete tuneup.
>
> Hope this helps,
>
> Bill
 
Al,

I replaced the stock paper air filter with a K&N Oiled Air Filter. As
far as the 4" cold air intake, I attached a 4" hose to the air cleaner
intake nozzle and ran it to the front side of the radiator. That way the
carb gets cooler air.

Bill
'73 230