Does any one out there have any old stock merc #881666

is this a specific requirement?

The sensor is the same on a 2000 chevy 2500 with the 8100 vortech.

I know but no dealer around here has one

I'm pretty sure I've got a couple of them Dennis. I'll take a look in the morning.

That would be great thank you

Rockauto.com

Should be off the same vehicle mentioned before and you will have it in a couple days. Usually great prices.

They are all gone GM done away with them and there is a post about it. There is only one place left that has them. I have not tested them. All the new cam sensors will not work for 2001 thru 2004 or 2005 GM autos, trucks, RV's and so on , Along with none for the marine side as well, it was the same sensor that the auto / truck side used. Mercruiser, Volvo, PCM, Indmar. None If you have one for the 2001 thru 2005 496, it is an old one left on the shelf.

Read page 4 and 5 from the link below it will explain what is needed to use the new cam sensor.

http://www.offshoreonly.com/forums/g...0-400-rpm.html


496HO: would IAC cause this? 1 engine lagging intermittently lagging 100-400 RPM

I've got one if you still need it. give me a call, 604-315-0570

I had a issue with the cam sensor 05 496, you can use a newer style; if you cut the mounting boss down on timing cover. You will have to measure with depth mic and subtract difference from pick-up .040- .060 air gap, if I recall. my original air-gap was about .120. this created a night-mare. Engine was a 8.1 modified and a Whipple 3.3. No fault codes, tach would jump with engine miss only at certain rpms. Engine would temporarily lose sequence of TDC, then pick it up next 360 degrees, chased my ass thinking I was losing crank signal. Brought air-gap with-in spec. ran perfect.