[DeTomaso] Crane cam 520341

[Charles Engles]

Dear Dan,


              I am dazzled by your comments and recommendations for exhaust 
systems and cams in relation to each other.    Based on your 
recommendations, then the more stock or restrictive the exhaust system, the 
more the LSA should tend toward 110.   Conversely, the more the exhaust 
system approaches open headers, then an LSA close to 105 is better.

             Dumb question:  is there a reference for this?   It is very 
interesting.



                           Warmest regards,  Chuck Engles





----- Original Message ----- 
From: "Daniel C Jones" <daniel.c.jones2 at gmail.com>
To: "DeTomaso Forum" <detomaso at realbig.com>
Sent: Tuesday, November 18, 2008 12:33 PM
Subject: Re: [DeTomaso] Crane cam 520341


> If you stay with restrictive exhaust, don't run 106 LSA.
> 108 or 109 would be better.
>
> Dan Jones
>
>
> On Mon, Nov 17, 2008 at 8:19 PM, Barry Seib <oldwheel at mts.net> wrote:
>> Daniel C Jones wrote:
>> What is your compression ratio?
>>> 10.5 :1
>> What sort of exhaust do you have?
>>> Stock at present. Considering changes.
>> With 106 degrees LSA, you need a really efficient exhaust.  The
>> mufflers in particular need to have very little backpressure.
>>> I 'd be a little reluctant to get too loud with the mufflers (for long
>> trips).
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