I ordered a slp PP because i had read so many times on this board that the SLP PP is the LT4. I pulled my motor and was looking at the pressure plate in the car and the part number is the same on the old PP as the SLP PP and that number is 382109-DO that is the only number i can find. I have looked on brents page and my SLP doesn't have the square throw out bearing but it does have the flat fingers on it like the LT4. The SLP has the round throwout bearing but doesn't have the ridges on the fingers like brents stock LT1 pp. My car had a clutch put in it by a previous owner but the car didn't have a single mod done to it so i doubt the clutch and pressure are anything but stock. I haven't removed them from the old motor yet to see if by chance the old PP is a SLP. The part number on both my SLP and my old PP aren't the same part number i see for stock LT1's which is 10207027. The part number i did find didn't match up with the LT4 set up either. To everyone that says the SLP is the same as the LT4 what are you basing this on? Anyone have any proof if this isn't a LT4 i am going to have to rush ship a LT4 PP so i can have it this week for balancing.

 

For anybody wanting to comment, I believe these are the pics Z95m6 was referring to

http://www.bfranker.badz28.com/fbody/clutch.htm

 

If anyone needs pics of the SLP set up i can get it for them i don't have a way to host it so i would just have to email it to you. I need to get this sorted out. The LT4 PP might stand a chance in my new heads and cam car but the stocker probably doesn't have a prayer.

 

anyone else care to add some insight on this? ive seen the SLP and i have always been skeptial of the claims its the LT4 version of the pp that SLP modified.

 

Mine was the LT4 PP, I checked the part number. The design of the fingers was different, as was the PN on both pressure plates. I am positive my old clutch was OEM. Maybe I got lucky, or somebody put an LT4 in yours when the clutch was replaced?

 

TTT can anyone shed some light on this. The part numbers are just stamped on in ink aren't they? Thanks

 

There are only two PPs made for the LT1 T56. The LT1 and the LT4. Both are made by Valeo.
Aside from the McCleod street-twin, every aftermarket clutch manufacturer uses the LT4 PP in their LT1 clutch kits. They just paint them with their factory color.

 

Ok thanks case sesensitive. I am jw what does the street twin use? Thanks