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RE: Cams

To: "'GLCurley@aol.com'" <GLCurley@aol.com>
Subject: RE: Cams
From: Jim Pivirotto <jimp@CORP.FirstIndustrial.com>
Date: Wed, 16 Oct 2002 13:50:14 -0500
George
Do you have emissions where you live and did this make a difference? Did you
keep the stock manifold? Doesn't sound like it would necessarily changes
things that much as far as emissions go. Pugs 756

-----Original Message-----
From: GLCurley@aol.com [mailto:GLCurley@aol.com]
Sent: Wednesday, October 16, 2002 9:43 AM
To: dcp125@juno.com
Cc: bricklin@autox.team.net
Subject: Re: Cams


Terry replaced my cam when I had the engine (AMC 360) rebuilt last winter.  
This car is mainly for show, not racing or high perf driving.  I went along 
with his recommendation to swap cams since I do drive the car to meets and 
generally try not to waste any time getting there :-)  Here are the specs:
Competition Cams part # 10-200-4  grind number A 252H-10
at 106 intake center line
206 duration at .050 
.2706 lobe lift
110 lobe separation

According to Motion Software Desktop Dyno, the calculated horsepower/torque 
with stock vs replacement cam with 600 cfm single plane intake, stock 
manifolds and mufflers is:
rpm           stock     replacement
2000 rpm  113/296  120/315
2500 rpm  146/307  158/333
3000 rpm  184/322  201/352
3500 rpm  211/317  233/349
4000 rpm  225/296  256/337
4500 rpm  222/259  266/310
5000 rpm  202/212  256/268
5500 rpm  174/166  232/222
6000 rpm  132/115  198/173
....etc...
These are calculated not actual dyno numbers.  However, they illustrate a 
rough comparison of the two different cams (c.p.).  The exhaust is stock and

there are no major modifications to the engine other than a Holley 600cfm 
4-bbl carburettor.  The new cam does make a noticeable difference, and I
have 
been satisfied with it.  The cam and lifter set was was relatively cheap, 
about $225 from Summit.

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