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Pontiac Camshaft Specs
| |
|
Int.
|
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Exh.
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|
|
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|
Application
|
Stamp
|
Dur.
|
CL
|
1.50:1
|
1.65:1
|
O.L.
|
Dur.
|
CL
|
1.50:1
|
1.65:1
|
Part #
|
| 1956 |
|
289 |
110.5 |
.406" |
.446" |
71 |
298 |
112 |
.406" |
.446" |
522869 |
| 1959-64 2bbl |
A |
252 |
112 |
.324" |
.356" |
38 |
252 |
112 |
.324" |
.356" |
518111 |
| 1959-62 4bbl |
4 |
273 |
106 |
.407" |
.447" |
55 |
282 |
116 |
.411" |
.452" |
529472 |
| 1963 389 |
0 (zero) |
? |
? |
?" |
? |
? |
? |
? |
? |
" |
? 389 Economy & RotoHydramatic |
| 1963 389 |
(none) |
? |
? |
?" |
? |
? |
? |
? |
? |
" |
Synchro-mesh Camshaft |
| 1963 Tempest |
H |
? |
? |
?" |
?" |
? |
? |
? |
?" |
?" |
537995 |
| 1963 Tempest |
J |
? |
? |
?" |
?" |
? |
? |
? |
?" |
?" |
539099 |
| 1963 421 HO |
7H |
? |
? |
?" |
? |
? |
? |
? |
? |
" |
? 421 HO Camshaft |
| 1964 389 |
B |
? |
? |
?" |
? |
? |
? |
? |
? |
" |
519640 |
| 1963-64 4bbl |
D |
273 |
106 |
.407" |
.447" |
55 |
282 |
116 |
.411" |
.452" |
529472 |
| 1963-70 F8/T8/P8 exc GTO |
E |
269 |
112.5 |
.374" |
.411" |
47 |
277 |
113.5 |
.410" |
.451" |
537441 |
| 1965-76 V8 |
N |
273 |
107 |
.407" |
.447" |
55 |
283 |
116 |
.407" |
.447" |
9779066 |
| 1973-74 2bbl |
5 |
269 |
108.5 |
.374" |
.411" |
55 |
277 |
109.5 |
.407" |
.447" |
491255 |
| 1974-75 2bbl |
Z |
269 |
108 |
.374" |
.411" |
59 |
282 |
108 |
.408" |
.447" |
491266 |
| 1974 4bbl |
(?) |
264 |
- |
.364" |
.400" |
51 |
273 |
- |
.403" |
.443" |
494957 |
| 1971-76 |
W |
269 |
108.5 |
.374" |
.411" |
51 |
277 |
113.5 |
.407" |
.447" |
483555 |
| 1967-69 2bbl V8 |
U |
269 |
112.5 |
.375" |
.413" |
47 |
277 |
113.5 |
.410" |
.454" |
9777254 |
| 1965-76 4bbl |
P |
273 |
112 |
.407" |
.447" |
54 |
289 |
113 |
.407" |
.447" |
9779067 |
| 1964 GTO or 421 |
C |
273 |
113 |
.407" |
.447" |
54 |
289 |
113 |
.407" |
.447" |
524009 |
| 1978-79 TA 6.6 |
@ (circled A) |
274 |
118.5 |
.395" |
.434" |
54 |
298 |
108.5 |
.401" |
.440" |
10003402 |
| 1977 Manual T/A 6.6 (WA) |
❑ (square) |
274 |
116 |
.364" |
.400" |
62 |
298 |
108 |
.404" |
.445" |
549431 |
| 1977 Auto TA 6.6 (Y6) |
O |
274 |
121 |
.364" |
.401" |
55 |
298 |
110 |
.405" |
.440" |
549112 |
| 1978 std engine |
- |
274 |
- |
.374" |
.410" |
- |
274 |
- |
.374" |
.410" |
527471 |
| 1956-62 3/2bbl |
6 |
283 |
112 |
.407" |
.447" |
60 |
293 |
116 |
.407" |
.447" |
524886 |
| 1963-64 421 HO |
L |
293 |
113 |
.407" |
.447" |
63 |
301 |
119 |
.407" |
.447" |
9770543 |
| 1965-72 HO |
S |
288 |
113 |
.407" |
.447" |
63 |
302 |
119 |
.407" |
.447" |
9779068 |
| 1966-69 RA |
H |
301 |
113 |
.407" |
.447" |
76 |
313 |
118 |
.407" |
.447" |
9785744 |
| 1973-74 455SD |
Y |
301 |
113 |
.407" |
.447" |
76 |
313 |
118 |
.407" |
.447" |
493323 |
| 1968L-70 RAIV |
T |
308 |
112 |
.470" |
.516" |
87 |
320 |
115 |
.470" |
.516" |
9794041 |
| (1973 455 SD) |
K |
308 |
112 |
.470" |
.516" |
87 |
320 |
115 |
.470" |
.516" |
480737 |
Mechanical Cams
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|
|
| 1969 RAV |
V |
308 |
112 |
.453" |
.498" |
87 |
320 |
115 |
.447" |
.492" |
545713 |
| 1960 389 SD |
7 |
300 |
112 |
.405" |
.447" |
75 |
304 |
115 |
.404" |
.446" |
535480 |
| 1961-62 389 SD |
8 |
308 |
112 |
.405" |
.447" |
83 |
312 |
115 |
.404" |
.446" |
540233 |
| 1962-63 421 SD |
10 |
308 |
112 |
.405" |
.447" |
87 |
320 |
115 |
.404" |
.446" |
541596 |
| 1963 421 SD |
11 |
312 |
112 |
.405" |
.447" |
91 |
324 |
115 |
.404" |
.446" |
542992 |
| 1963 421 SD |
12 |
308 |
112 |
.405" |
.447" |
89 |
324 |
115 |
.404" |
.446" |
545319 |
Roller Cams
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Application
|
Stamp
|
Int
Dur.
|
CL
|
1.50:1
|
1.65:1
|
O.L.
|
Exh
Dur.
|
CL
|
1.50:1
|
1.65:1
|
Part #
|
1969 RA VI
(and VII?) |
|
308 |
110 |
.531" |
.586" |
91 ? |
320 |
110 |
.536" |
.590" |
P1M310C |
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