I have been running the stock timing chain for 5 years now and when I pulled my engine apart...not surprisingly, the chain was rather loose, to put it mildly.

So now I am looking in to a new timing chain. I would like to go double roller, but will it work with ODB II and the crank sensor?

So what are you guys with ODB II running for timing chains?

 

id like to get the timing gears, will they work with all sensors?

 

About the gears, everyone I know that ran one within a year or two were back to the traditional timing chain....

 

I got rid of the CPS and went with a comp cam adjustable double roller. Your only other option if you want to retain the stock water pump and CPS is the LT4 chain.

 

Depending on your needs...LT4 stock or LT4 Extreme Duty.

 

I just swapped cams and used the GMPP LT1/LT4 Extreme Duty Timing Set for about $300. Not cheap but it works with OBDII. They even provide a W/P gear, but I didn't use it as I chose to replace the entire W/P bearing/shaft assemby and it comes with the gear already press fit.

I also decided to use a keyed hub on the crank although it probably wasn't necessary.

 

I am thinking the stock LT4 timing chain should do fine.

I don't need a special waterpump gear since I long ago had the part that drove the waterpump removed.

 

If you no longer need the waterpump gear you should get an aftermarket chain such as a cloyes, etc. You can just delete out the CPS with LT1 edit.....especially if you dont have strict OBDII emission testing.

 

Isn't Summit County strict on emissions testing? I was raised in Stark County and they were fairly tough. If you need to be emissions compliant then the LT4 set or the ED is your only choice. BTW, for the slight price premium of the ED set, it is much better than the LT4 chain...or so I am told.

 

I work around that unfair and unjust law....

 

Lucky dog!


Give me a call, i'm at home sick today. Got one of the board members coming over tonight to help me scan my car.