Breaking in roller cam motor - The 1947 - Present Chevrolet & GMC Truck Message Board Network

slow69 · 07-14-2003, 02:54 PM

I will be helping break-in a 383 crate motor will a roller cam. I have heard several conflicting suggestions about it. So I would like some more about how long to break it in and what rpm to run it at.
I was planning to start it off at 2000 rpm and then vary it from 1600 to 2400 for 15 minutes. Is this what you would do?
Secondly, what about timing. How can I estimate initial timing without turning it on?
Thirdly, it has vortec heads and there is a spot for a water temp sensor on the head. Should I buy a sensor for this or use the normal one on the water inlet neck (on the manifold0?
Thanks guys,
Slow69

07-14-2003, 02:54 PM	#1
slow69 Registered User Join Date: Dec 2000 Location: Flagstaff, AZ Posts: 140	Breaking in roller cam motor I will be helping break-in a 383 crate motor will a roller cam. I have heard several conflicting suggestions about it. So I would like some more about how long to break it in and what rpm to run it at. I was planning to start it off at 2000 rpm and then vary it from 1600 to 2400 for 15 minutes. Is this what you would do? Secondly, what about timing. How can I estimate initial timing without turning it on? Thirdly, it has vortec heads and there is a spot for a water temp sensor on the head. Should I buy a sensor for this or use the normal one on the water inlet neck (on the manifold0? Thanks guys, Slow69



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