Originally Posted By: rayh698
I will take pictures tomorrow and post.
tomorrow never came! pics please!!
Quote:
When I think about it, this filter could be VERY specific to the LS7/LSA/LS9 engines, since there could be special circumstances involved with their dry sump systems, oil tanks, and oil coolers.
GM Boy, or others???
we discussed this in the other related thread, they're fully interchangeable. The orginal filters did not have a pressure release valve, the new ones do. There's the chance that the valve is set to a different pressure but I haven't researched this yet, or seen any data regarding it. All that can be said for certian is in the techlink I linked in the other thread, GM (or a source claimaing to be GM) is saying it's fully interchangeable with the PF48 and that the internals are identical to the PF48.
I have the OE break-in PF48 filter still, and I plan on cutting a UPF48R open if the OP doesn't deliver; oil filter cutter ORDERED.