Cam housing on an 87

[ganun]

While doing a valve adjustment today I noticed the cam housing part numbers start with 964, is this correct for an 87 3.2????
Thanks

[bigel]

Not on my '87...starts with '930'.

[Flat6pac]

Yes the change was in about that time. The only difference in 88 and 90 is the drill for the studs from 8mm to 6 mm.
In the SC there was a 901 carrier with 4 bearing for the first couple years.
There was Carrera cases used in the late SC s'
Bruce

[Flat6pac]

Yes the change was in about that time. The only difference in 88 and 90 is the drill for the studs from 8mm to 6 mm.
In the SC there was a 901 carrier with 4 bearing for the first couple years.
There was Carrera cases used in the late SC s'
Bruce

[ganun]

Thanks, what's the difference between the two, 930 and 964 housings.

[Flat6pac]

The size of the cover studs.
Bruce

[DSPTurtle]

6mm or 8mm studs in the cam carrier. Your valve covers should have the correct size hole. Only matters when you're ordering washers and locknuts. Lol

[KTL]

Porsche started using the 964 casting in '89 when they were producing both the '89 C4 (964 chassis) and the '89 Carrera 3.2

You can use 964 housings from a later model. It's the 930 (aka 965) cam housing for the 3.3 and 3.6 turbo engines. These cam housings are basically the same as the 3.2 cam housing. I have a pair of 964 turbo castings I bought used to replace the wasted housings on my '79 engine.

[Flat6pac]

I just did an 88 this year with 964 part number.
8mm studs for the Carrera
Bruce