>A performance CAT would enhance the exhaust backpressure greatly to let
out gasses. I would say also,do put in a balancing pipe to help with
balancing out the exhaust rumbles and giving an other pipe to get rid of
gasses for the cylinders that are firing--just make sure to put the balance
pipe before the CAT (this way you only need 1 oxygen sensor on the crossover
pipe.)
>As to the 318 and the R/T 360 looking the same on the outside, there are
subtle differences to the trained eye. The biggest differences are that the
318 is INTERNALLY balanced and the 360 is EXTERNALLY balanced and a lot of
the parts will interchange you just have to be aware of which parts will
have to be given special balancing depending on what's changed. The exhaust
will interchange with each other,so will the heads. Which makes me think,
considering the 360 has the big valves- that would sure wake-up the 318,
unless the MAGNUM engines already have the big valves??
-----Original Message-----
From: jim miller <jmiller@eramp.net>
To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
Date: Tuesday, February 17, 1998 8:57 PM
Subject: Re: DML: Cat question
>
>David A DiSanti wrote:
>
>> How much more would installing a Performance Cat converter improve
>> performance? or is the stock Cat not a real drain on power.
>>
>> Dave
>
>Also if you were to convert your exhaust system to the one that must be
>on the r/t whichmust have dual cats and no crossover pipe how much
>backpressure would that relieve.
>I am sure it would be possable to put an r/t exhaust system on a 318
>because I bet they
>use the same manifold/headers on both engines. Both engines look the
>same on the outside!
>I am told they are the same except for bore and stroke.
>
>
>
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