Popular Piston/Cylinder Sets for 3.0L SC & 3.2L Carrera Motors

3.0L SC Displacement Options
Bore	Displacement	Piston Type	CR	Stroke	Wrist Pin	Case Bore	Machine Case?	Notes
95mm	3.0L	CIS/Motronic	8.5:1	70.4mm	22mm	103mm		1978-1979 U.S. spec SC
95mm	3.0L	CIS/Motronic	9.3:1	70.4mm	22mm	103mm		1980-1983 U.S. spec SC
95mm	3.0L	CIS/Motronic	9.8:1	70.4mm	22mm	103mm		1981-1983 Euro spec SC
98mm	3.2L	CIS/Motronic	9.8:1	70.4mm	22mm	103mm	No	3.2L "Short Stroke", Twin Ignition optional
98mm	3.2L	Carb/MFI/EFI	10.3:1	70.4mm	22mm	103mm	No	same as above, Twin Ignition required
100mm	3.3L	Carb/MFI/EFI	9.5:1	70.4mm	22mm	105mm	Yes	Twin Ignition required, rarely built
98mm	3.4L	Motronic/CIS	9.8:1	74.4mm	23mm	103mm	No	3.2L Carrera crank & rods. Twin Ignition optional
98mm	3.4L	Carb/MFI/EFI	10.3:1	74.4mm	23mm	103mm	No	same as above, Twin Ignition required
100mm	3.5L	Motronic/CIS	9.8:1	74.4mm	23mm	105mm	Yes	same as above, Twin Ignition required	100mm	3.5L	Carb/MFI/EFI	10.3:1	74.4mm	23mm	105mm	Yes	same as above
100mm	3.6L	Motronic/CIS	9.8:1	76.4mm	23mm	105mm	Yes	964 3.6L crank w/ 3.2L rods.Piston mods & Twin Ignition required
102mm	3.7L	Motronic/CIS	9.8:1	74.4mm	23mm	107mm	Yes	3.2L crank, aftermarket rods
& Twin Ignition required
3.2L Carrera Displacement Options
Bore	Displacement	Piston Type	CR	Stroke	Wrist Pin	Case Bore	Machine Case?	Notes
95mm	3.2L	Motronic/CIS	9.5:1	74.4mm	23mm	103mm		1984-1989 U.S. spec Carrera
95mm	3.2L	Motronic/CIS	10.3:1	74.4mm	23mm	103mm		1984-1989 Euro spec Carrera
98mm	3.4L	Motronic/CIS	9.8:1	74.4mm	23mm	103mm	No	Twin Ignition optional
98mm	3.4L	Carb/MFI/EFI	10.3:1	74.4mm	23mm	103mm	No	Twin Ignition required
100mm	3.5L	Motronic/CIS	9.8:1	74.4mm	23mm	105mm	Yes	Twin Ignition required
100mm	3.5L	Carb/MFI/EFI	10.3:1	74.4mm	23mm	105mm	Yes	same as above
100mm	3.6L	Motronic/CIS	9.8:1	76.4mm	23mm	105mm	Yes	964 3.6L crank, Piston mods
& Twin Ignition required
102mm	3.7L	Motronic/CIS	9.8:1	74.4mm	23mm	107mm	Yes	3.2L crank, aftermarket rods
& Twin Ignition required


Read more: http://www.superstreetonline.com/how-to/project-car/0505ec-porsche-911-sc-carrera-machine-work/#ixzz3QDm1Y8UE