How do you time a454 vortek

William Moss

Asked by May 07, 2015 at 07:17 PM about the 1999 Chevrolet Suburban

Question type: Maintenance & Repair

4 Answers


Timing is computer controlled so timing is not set the normal way. Why do you need to do this?

Kelly Mayo

hi TS...maybe this will help the guy.....


Yes that is good information, but I never found setting it to be as critical as they make it sound. TDC is TDC on the crank as well as the cam sync setting, if have seen these out 30 degrees on the offset and still run normal.

Kelly Mayo

yea.. But TDC is TDC and is still TDC looking at it but inside its set advance /retard of the cam to crank degrees... before a lot of racers were moving there tq curve around i was..advance or retard the cam... if you have to much bottom end( retard) and/or not enough top end (advance).. but im talking 2-4-6 deg max..anything more and it was the wrong cam..also..over lap we should not forget, but thats for another day..the info i sent was for answering his question.. hanks ts..

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