Interesting, never thought of this. Ok, I will try the PF454 - its small and should screw in just like the Fram PH5 that came with the truck, but be much shorter. Both filters have a Thread Size of 13-16" -16, and outside diameter is roughly 93 mm for anyone curious. Thanks!
1997 GMC K1500 Z71 Oil filter
- Thread starter aj_08
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454cid
Sooper Pooper
You're welcome
I little more info, just for the sake of info. The PF454 is what GM switched to putting on the 454 part way through the 99 model year, and then continued on with the 8.1L. I've run a few of the short filters, but typically run the longer one, since I still have the angle adapter. I had no idea 4x4 small blocks used a different filter until recently.
Love the education - thanks for the info. So it appears that big blocks used smaller filters than small blocks if I understand this correctly?
So the the four wheel drives with oil cooler take the shorter, smaller diameter filter, I use wix 51036.
There is also a cooler / filter adapter horizontal ( sideways) that uses a regular small block fullsize filter. Like PF 25.
In large truck applications the oil cooler/ filter adapter is vertical, normal position, takes full size filter. PF 25, 35, 45. Same diameter just big and bigger.
When I worked at parts store high school , rural agriculture city. Trucks and farm equipment wanted the PF-45 Chevy small block but more filter, that's a long time ago.
There is also a cooler / filter adapter horizontal ( sideways) that uses a regular small block fullsize filter. Like PF 25.
In large truck applications the oil cooler/ filter adapter is vertical, normal position, takes full size filter. PF 25, 35, 45. Same diameter just big and bigger.
When I worked at parts store high school , rural agriculture city. Trucks and farm equipment wanted the PF-45 Chevy small block but more filter, that's a long time ago.
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454cid
Sooper Pooper
I guess it would depend on what years you're comparing. By the time GM switched the 454 to the small PF454, most GMT-400s were 3/4 and 1-tons. I guess the few 350's being installed in vehicles may have had a larger filter, but the majority of light duty trucks were the new GMT-800s with LS engines that also use a pretty small filter.
99xcss4
frank'n (truburban) K-2500
this is very important but I must say to any one that sees do your homework on oil filters they are all not the same I do not know about the ac delco filters but here is a nice group of them note the filters in this video are not for our trucks they are for some thing else
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