As with the PORSCHE 924 and 928, these cams must be nitrided to
avoid premature wear.The factory used the same casting numbers for defferent
grinds.The numbers below
refer to the grind not the casting.
GRIND
NO.
SEAT
DURATION
CAM
LIFT
LASH
APPLICATION
STOCK
173/174
or
246
241
.396
.350
I
HYD.
E
HYD
1980-2
MODEL.
STOCK
203/204
or
242
235
.435
.395
I
HYD.
E
HYD
1983-84
US “S”
STOCK
155/156
or
254
246
.435
.395
I
HYD.
E
HYD
1978-9
MODEL
STOCK
187/188
or
268
255
.472
.432
I
HYD.
E
HYD
1980-83
EUROPEAN “S”
STOCK
211/212
or
255
247
.472
.432
I
HYD.
E
HYD
1984-86
EUROPEAN “S”
IMPRVD.
STOCK
256
246
.435
.395
I
HYD.
E
HYD
IMPROVED
STOCK FOR 173/174 & 203/204.MORE LOBE AREA
IMPRVD.
STOCK
256
246
.472
.432
I
HYD.
E
HYD
IMPROVED
STOCK FOR 186/187 OR 211/212. MORE LOBE AREA
4
VALVE STOCK
235
223
.354
.315
I
HYD.
E
HYD
291,
292 6R
293,
294 5R
4
VALVE STOCK
253
236
.392
.354
I
HYD.
E
HYD
291,
292 3R
293,
294 1R
IMPRVD.
4 VALVE
236
223
.354
.315
I
HYD.
E
HYD
IMRPOVED
STOCK FOR 291-294 5R AND 6R. MORE LOBE AREA
IMPRVD.
4 VALVE
253
236
.392
.354
I
HYD.
E
HYD
IMPROVED
STOCK FOR 291-294 1R AND 3R. MORE LOBE AREA
MANY
OTHER ELGIN PERFORMANCE GRINDS FROM 256-288 DURATION AVAILABLE FOR BOTH
2 AND 4 VALVE ENGINES.CALL
FOR SPECIFICS.WELDING IS
OFTEN REQUIRED.
If you have a car in mind, which is not listed, please call us!
