George...

[69gmcc10]

It has been a few weeks since I last updated this because I have been trying to get some miles on the truck before it snows here and I park it for the winter. I got timing adjusted properly, Vortec heads take less timing advance than other heads so in order to get the proper mechanical plus initial timing of 30 degrees I set it up with 10 initial, 8 vacuum and 20 mechanical. After I get the carb rebuilt I will be making the fine tuning to get it just right.

I have 100 miles on the engine now and I still have 1 lifter that is knocking just a little intermittently after the engine has warmed up. I have adjusted the valves again just to make sure that something wasn't overlooked and that didn't help much and neither did running a quart of ATF in the oil for 50 miles, but it is getting better slowly. Does anyone have any suggestions on how to free up that lifter?

Thanks to HEI451 and the email he sent me that demonstrates how to modified my vacuum can to work better and give it a solid stop and allow it to be dialed in almost perfect.

Next project is to rebuild the old quadrajet.