Thread: Removing carbon deposits with water???

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streeter, be real careful with your cam selection because at 9.1:1, I suspect the cam that's in the motor now is pretty close to optimum. With a longer cam, you may find that you've spent a lot of money to slow down due to a much lower dynamic compression ratio.
http://www.kennedysdynotune.com/Dyna...ion%20Tech.htm

Originally Posted by techinspector1

streeter, be real careful with your cam selection because at 9.1:1, I suspect the cam that's in the motor now is pretty close to optimum. With a longer cam, you may find that you've spent a lot of money to slow down due to a much lower dynamic compression ratio.
http://www.kennedysdynotune.com/Dyna...ion%20Tech.htm

Thanks for the reality check Techinspector,

I chose this particular cam with influence from ryans small block combo page: http://ryanscarpage.50megs.com/combos1.html

I decided on the cam in Combo 2 because the application best fit my needs and wants. Although there was a note that the torque may be decreased, I interpreted it as minimal which I was willing to accept for the upper rpm power increase . The engine at time of manufacture was rated 300hp/369ftlbs. It has not had any internal changes since installlation.

The compression ratio for combo 2 is 9.5:1. Could I effectively increase the ratio here by installing a thinner head gasket? The compressed thickness of the stock gasket is supposed to be .35. Could I go thinner and not risk piston to valve clearance issues??


I did some research before choosing this setup. I referenced Comps website that recommended this cam as the largest cam for stock convertors(2000 stall recommended), with no reference to compression ratio. The tech line at Comp said there should be no clearance issues with this cam.

With the kit already laying on the workbench, the anxiety is tremendous . But I guess I need to step away and back up and scratch my head once more .

Would any other specific information about the engine give any of you guys more to work with?? It you need something more let me know and I'll try my darndest to provide it.

Also, while I'm thinking about it, Comp recommends degreeing the cam to 106 intake centerline. They say that it is not imperative, and alot of times the general installation proceedure turns out to be 106 centerline, it is best to know for sure. The point I am getting at is seems like alot of time and measuring just to end up not having to retard or advance the cam?? Not to mention the degree wheel and dial indicator.


OK, is anyone confused yet, if so, come on aboard, the water's fine!