Well, not sure why you'd set it at Zero when the spec is 10 deg BTDC !! <img src="/forums/images/graemlins/pfft.gif" alt="" />

You'll find that it'll run pretty good with about 13-15 deg of advance vice the stock 10. How much it'll tolerate is dependant on the quality of fuel in your area. The knock sensor circuit should allow a trace amount of pinging under initial throttle tip-in with light loads and also when lugging the motor but you shouldn't get a lot of pinging. If you do, back off a few degrees and see how that works.

I wouldn't think that the marks on the 3.4 balancer would be any different from the 2.8's but I can't recall without looking at one. You'd have to compare the relation of the dampers' marks to the crankshaft keyway slot in the damper. I'm assuming you used the 2.8 timing cover in order to have a useable timing scale.

To be able to see the timing marks and accurately adjust spark advance you'll need to disconnect the Electronic Spark Control (ESC) wire in the middle console. Just pull out the little tray in the front of the console and you should see a white wire with black stripe. If the color differs, no matter, the ESC is the only wire in the console area that has an inline bullet connector. To disable the ESC circuit you'll unplug the wire from itself. This will remove any 'artificial' timing advance which the ESC circuit imposes at idle.

Disconnecting the ESC wire will also cause the 'check engine' lite to come on, but it'll clear once the wire is reconnected.

So, unplug the ESC wire, check and adjust your timing, (have fun with the distributor holddown bolt!!), reconnect the wire, and I expect she'll run a lot better.

BTW your computer will adjust to the new motor so it may take a while before it runs real sharp. But you should immediately notice the improvement over a stock 2.8!

Let us know how it runs...........ed