Napa Racing 1060R made by Wix Racing. I'll delve into it on my spare time next week.

Save yourself the headache and use a large pipe cutter or if you plan to cut the filter open every time, then buy a filter cutter from your local race car shop, they are not that pricey and they make the job very easy.

Dave

FYI

The 1060R has a 61 micron rating and the 1060 gold has 26 or 28 micron rating the 1060 gold has 8 holes for oil to go through and the 1060R has only 6 holes at the top. The NAPA 1060 gold is a better filter

An A/C Duraguard made by GM is a 25 micron filter and it goes for about 5-6 bucks. It flows extremely well and traps like the best. It has fewer but larger holes which make a big difference. I think you had a flow problem and the bypass valve was sticking. I would switch to the A/C personally. All the Corvette guys I know of stick to this filter.

Fram: PH5, DG5
Purolator: L34631
Purolator Pure Oine: PL34631
AC: PF1218
Motorcraft: FL-12A
Napa: 1060 1060GOLD
Wix: 51060
Baldwin: B1428 (top rated)
K&N: HP3002
Amsoil: SDF-24
Hastings: LF279
Fleetguard: LF3679
Mercruiser: 35-802885Q
Mobile 1: M1-302
Kendall: K31
Penzoil: PZ45
Quaker State: QS5
Shell: S63, SH38
Texaco: T38, T38B
Warner: PH1218
STP: S01218
Valvoline: V056

Thread a pipe thread hydraulic fitting in the filter then chuck it in the lathe by the fitting and part it off with a threading bit.Nice clean cut if you have machine shop acces.

come on you guys, just use a fricken can opener. cut like a can of noodles and view like a pro. B3