Doing the clutch(literaly), how hard is it to change the rear main seal? Any pics, tutorials would be helpful.

 

Very easy. Also a good idea to change the pilot bearing while you're there.

Pop the old seal out witha screwdriver or something. Be careful not to scar/scrape the crank/block. Install the new by carefully and evenly tapping it in with a rubber hammer or PVC pipe if you have the right size.

Ryan

 

From summit:

FEL-BS40520 Chevrolet: 4.3L/5.0L/5.7L, one piece, rear main seal $22.39

FPP-2900 Rear Main Bearing Seal, Chevrolet V6 & V8, Each $9.50


Which one do I need? Im guessing its the more expensive one.

EDIT:
Looks like the more expensive one has a couple pieces to it:

http://store.summitracing.com/partde...57#largerimage

 

Can anyone confirm what the right one is?

 

It's the one piece one. I got mine at Advance Auto for $20 and change. It was a National (the Fel Pros I've bought in the past were repackaged Nationals).

 

is the seal easier to do on a auto?