Bob: Turning the revs you do, you will probably benefit from a K&N
"filtercharger" air cleaner. These are about $50 at any auto supply store.
They really do give you a performance kick at high revs, and improve milage,
too. I've got them on both my cars. You should flip over the Aircleaner
cover on your puller to let it breathe more freely, too. The K&N filters can
be cleaned, and never need replacing.
Dan
75 Argosy 26
> From: Bob Kiger <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> Date: Thu, 14 Jun 2001 08:13:27 -0700
> To: Multiple recipients of VACList <[EMAIL PROTECTED]>
> Subject: [VAC] Re: Vintage Puller
>
> My approach is going to be to put on the exhaust and then take the puller
> into the carb guy with one mandate. Do everything to fuel flow and vacuum
> to increase gas mileage. He is a wiz and has already told me that he will
> set the carb on the margin to get a couple of miles more per gallon. That
> might reduce performance a bit, but as I mentioned the truck is so hot at
> the low end that I could sacrifice a little performance.
>
> The numbers are staggering in terms of operating costs. Even 1mpg is 10%
> increase in fuel economy. I would not be pursuing this if I had a modern
> puller that was getting 20mpg or just a regular passenger car with
> 25+mpg. I am still aiming for 14-15mpg and will know by next week.
>
> Thanks for all your advice.
> Bob
> At 04:54 AM 6/14/01 -0500, you wrote:
>> Bob,
>>> ----- Original Message -----
>>> From: <mailto:[EMAIL PROTECTED]>Bob Kiger
>>> At 05:59 PM 6/13/01 -0500, you wrote:
>>>
>>>> Dual exhaust systems will improve high rpm horsepower, but in some
>>>> cases, will reduce low speed torque.
>>>> Why is this Harvey?<
>>>
>>> I can't remember the details sufficiently to provide a convincing
>>> explanation; the thought comes from books and magazine articles I have
>>> read on building and dyno testing performance engines. I think it is
>>> because of the scavenging effect of increasing exhaust flow that leans
>>> the incoming fuel air mixture because of more complete removal of the
>>> exhaust gasses from the prior power stroke. It is a known fact that
>>> gasoline engines such as small block Chevys used in pickup truck engines
>>> have smaller intake and exhaust valves than high rpm horsepower engines
>>> used in Corvettes, Camaros, etc. for the same reason.
>>>
>>>> Hope I can prove you wrong on the gas mileage thing. Only time will tell.>
>>>
>>> I hope you can also but I must have read 100 test articles on those old
>>> trucks back in the '60s and '70s, some factory stock and others testing
>>> aftermarket products advertised to improve performance and efficiency. I
>>> have never read of one that attained much more than 10 mpg in documented
>>> testing.
>>>
>>> Harvey
>>
>> 1966 Airstream "Safari" WBCCI #2857
>> 1966 Ford F-250 "Camper Special"
>> Mira Mar Mobile Community
>> Oceanside, California
>
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