Re: 4/7 Cam Swap

[Bill <Y1TopBanana73@xxxxxxxxx>]

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If it gave you any advantage @ all, I would think it would be HUGE
with the F.A.S.T. series guys, but this is the first time I've heard
of it...god knows they will do almost anything for 1HP.

-- 
Bill M
65 Coronet 500 'vert http://1962to1965mopar.ornocar.com/mmo62008.html
http://www.marylandmopars.net/membersrides/Bill-MelissaCoronet/Bill-MelissaCoronet.htm
73 Dart Sport, 00 Cherokee Sport, 01 Dakota SLT
21 Model T Depot Hack, 92 Accord, 06 Mazda 3

On Fri, Oct 23, 2009 at 8:51 AM, Gary H. <spigot2039@xxxxxxxxxxx> wrote:
>
> If you get a chance, read through the "Hot Rod" article I put a link to; it reports that there is disagreement even among the top motor builders as to the benefit of such a technique. Of course, in the high dollar, highly competitive top ranks of racing *any* small advantage is sought. I don't think it is worth the effort for weekend warrior racers.
>
> Thanks,
> Gary H.
>
> -----Original Message-----
>
>>Does it really give you anything extra? I was looking around for some
>>definitive numbers and I can't seem to find any. That would be a
>>nightmare for anyone working on the car besides the person that did it
>>though! Could you imagine the cursing while trying to get the firing
>>order correct if you didn't know it was messed with?
>>
>>--
>>Bill M
>>On Thu, Oct 22, 2009 at 9:03 PM, Tom Watters <tomwatters@ > wrote:
>>>
>>> There are 4/7 swaps for mopars as well.  I remember hearing from a friend in
>>> colorado saying he was thinking of putting one in his '65 when he put it
>>> together.
>>>
>>> I also saw a thread on Moparts about it some time ago.  Found the thread in
>>> the Race Section ->
>>> http://board.moparts.org/ubbthreads/showflat.php?Number=4787668
>>>
>>> I've personally never seen one on a mopar that I know of, but, there are
>>> some tricks to getting that extra little umph from a setup.
>>>
>>> --Tom
>>>
>>> Gary H. wrote:
>>>>
>>>> A 4/7-swap cam changes the engine's firing order, moving the power stroke
>>>> for cylinder 4 to where 7 used to be, and vice versa. Seems to be from a
>>>> Chebby perspective.
>>>> http://www.hotrod.com/techfaq/113_0701_lunati_cams/index.html
>>>>
>>>> Thanks,
>>>> Gary H.
>>>> -----Original Message-----
>>>>
>>>>>
>>>>> What's a "4-7" cam?
>>>>>
>>>>> --
>>>>> Bill M
>

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