That cam, same one I have. Would not mess up your cold start. What I'd do is replace your ECU temp sensor on the lower intake manifold as a replacement is cheap, check your cold start thermo timing switch and your cold start injector.
Hey Mudder,
What cam did you have before installing the 261C? So, you did not notice any change in cold starting?
"ECU temp sensor"... ? Do you mean the Water Temperature Sensor?
That sensor and the Start Injector Time Switch both passed the Ohm test while I was assembling the engine.
Thank you for your input.
Gnarls.