Quote:
Originally Posted by Ant
this theory might not work with my KC Nascar based engine being a bit bigger in the ports and camshaft, I dont envisage it will have much below 4000rpm, however I have been told KC does a good job of producing engines that pull quite well from 2500rpm up. Is there a tendency to have it coming in higher up on less streetable engines, as a 427 which I have owned pull better down low?
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Actually with a lot of valve overlap you are in effect bleeding off the compression at lower RPM, so you could get away with more advance down low. You might even be able to get away with a locked out advance if you use a start retard... It is the stock engines that make peak torque at low RPMs that can't take the quick advance curves.
If you are nervous about detonation...
The guys who build 1,000 HP Honda Turbo engines use a "can" to listen for knock. A "can" is simply a copper tube bolted onto the engine block hooked to a rubber tube going to the drivers ear. In other words a low tech stethoscope.