If you take a look at the two, you'll notice the 3800 has the extra balance shaft above the cam shaft. The top half of the housing's different. The bottom halves are similar, which is why the guys that have takled this issue use the top half from a 3.8, and weld the bottom half of a 3800 to it.I`ve been looking at the buick 3.8 and 3800 timing cover bolt pattern and it looks the same to me. was wondering if anybody try bolting a 3800 timing cover to the 3.8 (109) block?.
Here is what am looking at:
here is the snout.
94-99 Rover V8 engines, check the salvage yards. Cost, probably in the $50-75 range.
That is not true. The Series I FWD engine cover bolt holes are a perfect match to a 109 engine. On my gerotor front cover I made, I use a stock FWD timing cover gasket without any modifications. I didn't have to drill and tap any other holes in the block or cover to make it work properly. Using a Series II cover (like CTX-SLPR) the bolt holes do not match.I can tell you the 86-88 NA 3800 doesn't bolt onto a 109 style block.And neither do the Series I and II covers.