I pulled the timing gears and chain to replace them. The old ones have a part number of S619 for the crankshaft gear and S620 camshaft gear. The new ones are a little thicker and have part numbers S511 for the crankshaft gear and S506 for the camshaft gear. Heavier duty gears and chain but don't know if they will fit ok in the timing chain cover. I got them from NAPA. Anybody know if the new ones will work ok???

 

Ok, so I did a little more research. Thanks to Autozone, they list the old part (S620) for every GM V6 except the Camaro. All part dealers seem to list the new part as S506 for Camaro only. Hmmm, I think I got screwed over by the Chevy dealer when they put in this crate rebuild. My concern is whether the gear and chain will hit the timing cover. I will get the number off it tonight but does anyone have the correct part number for the Camaro timing cover???

 

The thicker gear should fit as you can install a double roller on a rwd w/o issues. The thinner gearsets were mainly used on the FWD applications.

 

Thanks, I was concerned with the depth of the cover since I see what looks like a scrape mark from one of the cam timing gear bolts on the domed area right in front of the gear (back of the water pump recess).