[97Formula]

Originally Posted by Pampered-Z

LT1s have lots of ticks, even the injectors can tick. How is the oil pressure? LT1 historically have low oil pressure, and some filters can actually cause a tick. If you not using a GM filter, switch to one next oil change.

Oil pressure is above 40 on cold startup and stays that way until warm. Once warm, it is 20-25 at idle, and at least 40 while driving. By GM filter, do you mean oil filter? If so, I'm using a K&N since the new GM filters are now half the size as they used to be.

Originally Posted by Pampered-Z

Also check the exhaust, could be a leak at the join, and the 97s have that odd cat placement on the drivers side.

Also check under the hood in the dark, a bad wire can arc and tick and still not cause the car to run bad. I've seen this 2-3 times. The #3+5 and #6 cylinders like to burn wires over time.

I'll have to check that....still no SES, and still no ticking until warmed up to operating temps.

Originally Posted by JL8Jeff

What oil filter are you using?

K&N HP2002