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Camshaft selection
https://slantsix.org/forum/viewtopic.php?t=3210
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Author:  Craig O'Connor [ Wed Feb 06, 2002 8:02 pm ]
Post subject:  Camshaft selection

I'm not sure what cam I should go with on my 225 slant six. Basically I have a stock bottom end I've polished my head decked it .060" and done a competition valve grind. I drive this car as a daily driver any suggestions

craig_o_connor88@hotmail.com

Author:  Doc. [ Thu Feb 07, 2002 12:37 pm ]
Post subject:  Re: Camshaft Selection Questions

Quote:
: I'm not sure what cam I should go with on my
: 225 slant six. Basically I have a stock
: bottom end I've polished my head decked it
: .060" and done a competition valve
: grind. I drive this car as a daily driver
: any suggestions.


We need a little more info. here:
What carb.?
What exhaust?
What is the trans, if an automatic, what converter stall speed.
What rear end gear ratio.

Sounds like you want a "street performance" cam that gives a little more RPM while not giving-up idle quality and low speed torque.
DD

Author:  Tim_K [ Thu Feb 07, 2002 8:51 pm ]
Post subject:  Re: Camshaft selection

Quote:
: I'm not sure what cam I should go with on my
: 225 slant six. Basically I have a stock
: bottom end I've polished my head decked it
: .060" and done a competition valve
: grind. I drive this car as a daily driver
: any suggestions


That #3 crane cam looks pretty weak to me. 280* duration with ONLY 218*@50? Shivvy lobe! I thought a 268 Purple Shaft would be a nice size cam in my /6, but you can hardly tell it's there unless you wind it up at WOT. If you want a decent cam, I'd suggest a 268 Purple Shaft if you can find one, or maybe an isky cam like other people have used. You say you polished the head and did a valve job, but did you port it or get someone else to? How about gasket matching? A LOT needs to come out of the exhaust ports just to match the factory manifold.

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