PORSCHE 914 PROFILES

            On the 7208 and wilder grinds we recommend having a slot cut down the middle of the timing gear to create two rows of teeth.  This helps reduce oil throw off and oil foaming at high rpms. 

            Lifters must always be reconditioned or replaced.  Beware of aftermarket 914 lifters, some of them are of very poor quality.

INTAKE ROCKER ARM RATIO = 1.3:1 EXHAUST ROCKER ARM RATIO = 1.25:1

 

GRIND NO.

SEAT DURATION

CAM LIFT

LASH

APPLICATION

64508-H

258

258

.294

.294

I HYD.

E HYD

HYDRAULIC LIFTER.

WILL WORK WITH F.I.

6508-H

260

260

.292

.292

I HYD.

E HYD

HYDRAULIC LIFTER STREET GRIND A LITTLE ROUGH WITH F.I.

68508-H

274

274

.302

.302

I HYD.

E HYD

PERFORMANCE HYDRAULIC, MORE COMP, & GOOD EXH. SYSTEM.

914

255

254

.296

.282

I STD.

E STD.

STOCK SOLID LIFTER GRIND.

330-1

256

255

.296

.296

I STD.

E STD.

IMPROVED STOCK. MORE LOBE AREA THAN STOCK. GOOD W/ F.I.

6408-18

256

256

.296

.296

I STD.

E STD.

WIDE TORQUE BAND. A LITTLE ROUGH WITH FUEL INJECTION.

66508-19

266

266

.305

.305

I STD.

E STD.

CARBS REQUIRED. SMOOTH IDLE, 1500-4500 RPM.

M6708-18

268

268

.314

.314

I STD.

E STD.

REQUIRES CARB AND A GOOD EXHAUST SYSTEM.

7008-17

280

280

.333

.333

I STD.

E STD.

 BIG BORE KIT, CARBS, 9:1 AND HEADER, 2000-6000 RPM

7208-17

288

288

.333

.333

I STD.

E STD.

BIG BORE KIT, 9.5:1, CARBS, AND HEADER 2500-6000 RPM

7207-19

288

288

.369

.369

I STD.

E STD.

HOT STREET - AUTOCROSS. 9.5+:1, 2500-7000 RPM.

7508-18

300

300

.350

.350

I STD.

E STD.

AUTOCROSS. 10.5:1, 3800-7300 RPM.

7708-17

308

308

.369

.369

I .008

E .010

FULL RACE.  11.5:1, 3800-7300 RPM.

 

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