Stock camshaft specifications for a 1971 auto. non w-30 442(455)
#1
Stock camshaft specifications for a 1971 auto. non w-30 442(455)
Does anybody know what the 0.050 duration, lift, etc was for a 1970-72 auto. non w-30 442(455)?? I know the "308 cam had 232 duration and .475 valve lift at .050
thanks
joepenoso
thanks
joepenoso
#2
Factory specs are found here. http://www.442.com/oldsfaq/ofcam.htm#Cams
#3
How can you translate subjective 286 -287 advertised duration and .472 lift from the advertised numbers to objective 0.050 numbers.
1970 393859 58 286/286 .472/.472 350 4BC ex. AT, OAI, hi-perf
400084 36 250/264 .400/.400 350 2BC, 4BC AT
400117 44 258/272 .435/.435 455 ex. Pol., Toro
400165 57 285/287 .472/.472 4257, 67, 4400 AT, Toro W-34
402486 8 262/274 .440/.440 455 Toro ex. W-34
402569 108 328/328 .475/.475 455 4400 ST OAI (W-30)
406768 68 294/296 .472/.472 455 4400 ST ex. OAI
402194 82 308/308 .474/.474 350 W-31 OAI
1971 400084 36 250/264 .400/.400 350 2BC, 4BC AT
400117 44 258/272 .435/.435 455 Toro w/2.73 axle, 455 ex 400 or
Perf. Eng.
400165 57 285/287 .472/.472 455 4400 OAI w/AC, 4400 AT
402486 48 262/274 .440/.440 350 4BC ST,455 Toro w/3.07
409691 61 286/287 .474/.472 455 4400 ST, AT OAI ex AC
409717 32 250/264 .400/.400 350 5400
409759 68 294/296 .472/.472 455 4400 ST OAI (W-30)
1972 400084 36 250/264 .400/.400 350 L34, 350 AT L32, 33 All
400117 44 258/272 .435/.435 455 All 4BC AT, Marine LC
402486 48 262/274 .440/.440 350 F-85 4BC ST (L34), Marine
409691 61 286/287 .474/.472 455 L75 ST,L77 AT, Marine HC
409759 68 294/296 .472/.472 455 F-85, 455 ST OAI (W-30)
Thanks
joepenoso
1970 393859 58 286/286 .472/.472 350 4BC ex. AT, OAI, hi-perf
400084 36 250/264 .400/.400 350 2BC, 4BC AT
400117 44 258/272 .435/.435 455 ex. Pol., Toro
400165 57 285/287 .472/.472 4257, 67, 4400 AT, Toro W-34
402486 8 262/274 .440/.440 455 Toro ex. W-34
402569 108 328/328 .475/.475 455 4400 ST OAI (W-30)
406768 68 294/296 .472/.472 455 4400 ST ex. OAI
402194 82 308/308 .474/.474 350 W-31 OAI
1971 400084 36 250/264 .400/.400 350 2BC, 4BC AT
400117 44 258/272 .435/.435 455 Toro w/2.73 axle, 455 ex 400 or
Perf. Eng.
400165 57 285/287 .472/.472 455 4400 OAI w/AC, 4400 AT
402486 48 262/274 .440/.440 350 4BC ST,455 Toro w/3.07
409691 61 286/287 .474/.472 455 4400 ST, AT OAI ex AC
409717 32 250/264 .400/.400 350 5400
409759 68 294/296 .472/.472 455 4400 ST OAI (W-30)
1972 400084 36 250/264 .400/.400 350 L34, 350 AT L32, 33 All
400117 44 258/272 .435/.435 455 All 4BC AT, Marine LC
402486 48 262/274 .440/.440 350 F-85 4BC ST (L34), Marine
409691 61 286/287 .474/.472 455 L75 ST,L77 AT, Marine HC
409759 68 294/296 .472/.472 455 F-85, 455 ST OAI (W-30)
Thanks
joepenoso
#7
Actually, many years ago i got some "duration at .050" information on two of the smaller cams on that list:
The 400117 258/272 455 4v cam was 194/207 at .050
The 402486 262/274 350 4v cam was 196/208 at .050
With the 328 cam at 244 or so and the 308 cam at 232, maybe the 409691 286/287 cam is somewhere around 220 at .050 (?). Obviously, just a wild guess on my part.
#8
Thanks for the advice ....I was aware of the 308 and 328 cams being 234 and 244 at 0.050 repectively. I think the non 442 had timing like 215 at 0.050 but that;s a wild guess because the rest of the Olds line was Luxury and not "Sporty" like 442's. I am just curious what the stock specs were and how much they changed with the reduction of compression in 1971-72
Thanks
joepenoso
Thanks
joepenoso
#9
For whatever it's worth, I decided to expand on Joe's post, and post the entire cam spec list from the tech section, for easy reference.
I cleaned up some of the abbreviations a bit.
There are typos in 1969 and 1970 which I could not fix with certainty - if anyone can tell me how to fix them, I will.
- Eric
I cleaned up some of the abbreviations a bit.
There are typos in 1969 and 1970 which I could not fix with certainty - if anyone can tell me how to fix them, I will.
HTML Code:
Over- Duration Lift Year Part # lap Int./Exh. Int./Exh. Application 1964 387484 52 278/282 .430/.432 330 Police Pursuit 577994 36 250/264 .380/.390 330 2bbl, D88 2bbl 1965 387484 52 278/282 .430/.432 400, 330 4bbl ST,425 except Starfire 388992 47 278/282 .430/.432 J88 4bbl, 330 4BC AT 558528 36 250/264 .387/.388 330 2bbl 388828 50 286/280 .427/.461 425 Starfire 1966 588528 36 250/264 .387/.388 330 2bbl 388992 47 278/282 .430/.432 330 4bbl AT 387484 52 278/282 .430/.432 425 except Starfire 388828 50 286/280 .427/.461 425 Starfire 393964 52 278/282 .430/.432 400 AT except OAI 393859 58 286/286 .472/.472 400 ST except OAI 390961 55 281/282 .472/.472 Toro 397328 82 308/308 .474/.474 400 OAI (W-30) 1967 396188 36 250/264 .387/.388 330 2bbl lo-comp 396192 47 278/282 .430/.432 330 4bbl AT,400 4BC AT x OAI 397744 36 250/264 .435/.435 400 2bbl 393964 52 278/282 .430/.432 330 4bbl ST, 425 except S/F, Toro 396190 50 286/280 .472/.461 425 Starfire, Police 396961 55 281/282 .472/.472 Toro 393859 58 286/286 .472/.472 400 ST except OAI 397328 82 308/308 .474/.474 400 OAI (W-30) 230328 82 308/308 .474/.474 400 OAI w/ 16 valve springs 1968 393859 58 286/286 .472/.472 400 ST except OAI 402486 48 262/274 .440/.440 400 AT except OAI, 350 w/ 269 Pol. 400117 44 258/272 .435/.435 455 Irrig, Mar, hi-comp except Police, Toro, hi-perf. 400084 36 250/264 .400/.400 350 except OAI 402194 82 308/308 .474/.474 350 W-31, Hurst except A/C Casting #389410 400165 57 285/287 .472/.472 455 Police, Toro W-34, Hurst A/C 402569 108 328/328 .475/.475 400 OAI after 1-1-68 1969 393859 58 286/286 .472/.472 400 AT, W-32 OAI 400165 57 285/287 .472/.472 455 Police, Toro W-34, F-85, Hurst, 455 Marine 4bbl hi-perf 402486 48 262/274 .440/.440 3269 AT, 350 Police 402194 82 308/308 .474/.474 350 W-31 OAI 400117 44 258/272 .435/.435 455 except Police, Toro, hi-perf. 402569 108 328/328 .475/.475 400 OAI except W-32 400084 36 250/264 .400/.400 350 except OAI 1970 393859 58 286/286 .472/.472 350 4bbl except AT, OAI, hi-perf 400084 36 250/264 .400/.400 350 2bbl, 4bbl AT 400117 44 258/272 .435/.435 455 except Police, Toro 400165 57 285/287 .472/.472 4257, 67, 4400 AT, Toro W-34 402486 8 262/274 .440/.440 455 Toro except W-34 402569 108 328/328 .475/.475 455 4400 ST OAI (W-30) 406768 68 294/296 .472/.472 455 4400 ST except OAI 402194 82 308/308 .474/.474 350 W-31 OAI 1971 400084 36 250/264 .400/.400 350 2bbl, 4bbl AT 400117 44 258/272 .435/.435 455 Toro w 2.73 axle, 455 except 400 or Performance Engine 400165 57 285/287 .472/.472 455 4400 OAI w A/C, 4400 AT 402486 48 262/274 .440/.440 350 4BC ST, 455 Toro w 3.07 409691 61 286/287 .474/.472 455 4400 ST, AT OAI except A/C 409717 32 250/264 .400/.400 350 5400 409759 68 294/296 .472/.472 455 4400 ST OAI (W-30) 1972 400084 36 250/264 .400/.400 350 L34, 350 AT L32, 33 All 400117 44 258/272 .435/.435 455 All 4bbl AT, Marine Low Comp. 402486 48 262/274 .440/.440 350 F-85 4bbl ST (L34), Marine 409691 61 286/287 .474/.472 455 L75 ST,L77 AT, Marine Hi Comp. 409759 68 294/296 .472/.472 455 F-85, 455 ST OAI (W-30) 1973 400084 36 250/264 .400/.400 350 L32, L33, L34 400117 44 258/272 .435/.435 455 AT, Marine, 455 Low Comp. 402486 48 262/274 .440/.440 350 ST M15, M20 409691 61 286/287 .474/.472 455 4bbl, L77, Marine 1974 409691 61 286/287 .474/.472 455 AG37, 455 W-30, Marine 455 (also #562302) 400117 44 258/272 .435/.435 455 ex W-30, Marine, 455 Low Comp. (Also #562303) 400084 36 250/264 .400/.400 350 (Also #562299) 1975 550638 28 242/250 .396/.400 260 400084 36 250/264 .400/.400 350 (Also #562299) 400117 44 258/272 .435/.435 455 (Also #562303) 409691 61 286/287 .474/.472 455 Marine (Regular) 402486 48 262/274 .440/.440 350 Marine 409759 68 294/296 .472/.472 455 Marine (Hi-perf.) 1976 550638 28 242/250 .396/.400 260 400084 36 250/264 .400/.400 350 402194 82 308/308 .474/.474 455 Marine Hi-perf. F.P. 409759 68 294/296 .472/.472 455 Marine Hi-perf. 409691 61 286/287 .474/.472 350 and 455 Reg. Perf. Marine 400117 44 258/272 .435/.435 455 All, Irr., except Marine 1977 562298 52 256/277 .247/.250 260 (thru 1982) 562299 36 250/264 .400/.400 350, 403 (thru 1980) 562301 68 294/296 .474/.472 403 Hi-perf. Marine thru 1979 562302 61 286/287 .472/.472 350, 403 Reguar Perf Marine, ST thru 79
#13
I think Joe paid to have that cam read on the cam doctor...I don't know if that information is going to be had for nothing. On the other hand, doesn't the Mondello technical manual have cam specs for those years? I don't have mine handy at the moment or I'd know for sure.
#14
The cam specs given are advertised. I wonder what the actual cams measure at 0.050. I know the 328 and 308 cams are 248 and 232 intake/exhaust degrees respectively. I wonder what the less famous cams duration was?
Thanks
joepenoso
Thanks
joepenoso
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