PORSCHE 356/912 PROFILES

            Always recondition the valve lifters or replace them.  The early 356’s used cast iron lifters which cracked and broke under normal use, completely destroying the engine.  We prefer to grind your steel lifters with the proper radius to match the taper on your cams.    

ROCKER RATIO: 3 BOLT STANDS = INTAKE 1.3:1, EXHAUST 1.13:1

                                            2 BOLT STANDS = INTAKE 1.13:1, EXHAUST 1.13:1

GRIND NO.

SEAT DURATION

CAM LIFT

LASH

APPLICATION

103N

255

255

.282

.282

I .004

E .006

STOCK 356 A & B

CORE # NORMAL 103

102-15

256

256

.296

.296

I .004

E .006

STOCK 356 C

CORE # 102-15

102-16

270

270

.320

.320

I .004

E .006

STOCK 256 S, SC & 912

CORE # 102-16

66509-19

266

266

.303

.303

I .004

E .006

EXCELLENT POWER FROM 1000-5000 RPM

M6708-18

268

268

.320

.320

I .004

E .006

MORE LOBE AREA THAN 102-16 OR 105.  POWER 1500-5000 RPM.

7008-17

280

280

.333

.333

I .004

E .006

BROAD POWER, 9.5:1, 2000-5500 RPM.

7010-17

280

280

.333

.333

I .004

E .006

10:1, SOLEX’S, 1720 KIT.

3000-6000 RPM

7208-17

288

288

.333

.333

I .004

E .006

HOT STREET. 10:1, BIG CARBS, H.P. SPRINGS, 3400-6700 RPM.

7208-19

288

288

.369

.369

I .004

E .006

AUTOCROSS. 10:1, CARBS, H.P. SPRINGS

7508-18

300

300

.349

.349

I .004

E .006

VINTAGE RACE. 10.5:1, 1 5/8” HEADER, 3400-6700 RPM.

7606-17

304

304

.380

.380

I .004

E .006

VINTAGE RACE. 10.5:1, 1 5/8” HEADER, 3500, 6800 RPM.

7706-17

308

308

.369

.369

I .004

E .006

VINTAGE RACE. 11:1, 1 5/8” HEADER, 3800-7200 RPM.

M7805-15

312

312

.412

.412

I .006

E .008

ROAD RACE.  11.5+:1, 1 3/4” LONG TRACK, 1 5/8” ON SHORT TRACKS.  4800-7300 RPM.

 

WILDER CAMS AVAILABLE FOR ALL OUT “E” PRODUCTION RACING.  DYNO TUNING NECESSARY.  FULL LIST ON ENGINE SPECIFICATIONS REQUIRED.

 

If you have a car in mind, which is not listed, please call us!