[GTO-relic]

I have this solid mechanical lifter cam, have a rough idea what it is, but not exactly.
box says:
Crane CC-290
with Crane part # 284691
(see pic attached below)
cam is stamped CC-290 on front face as well.
does anyone have an old Crane catalog that has it listed ?
I've found listings for BBC, SBC using the -4691 suffix, but they differ for every engine.
It's a used cam. I can measure .313" intake lobe lift, .329" exhaust lobe lift,
that would be .470" intake lift, .494" exhaust lift, with zero lash.
I'm assuming it's 290 degrees duration seat to seat, but may be slightly more.
it has a little wear on it, on the tips of lobes. but not a lot. good usable cam yet.
please post if you can, thanks.

[Joe's Garage]

Copied this page from a Crane catalog from somewhere.....

Part #284691
intake / exhaust
246* / 256* @ .050
.483" / .506" lift w/ 1.5s
.531" / .556" lift w/ 1.65s
lash .020" / .022"
112 centerline

[PAUL K]

They had a CC290A-NC "Commander" listed in the 1984 catalog

290/300 adv

248/258 .050

.500/.525

112 LSA

.022/ .022 Lash

[Jay S]

Originally Posted by PAUL K

They had a CC290A-NC "Commander" listed in the 1984 catalog

290/300 adv

248/258 .050

.500/.525

112 LSA

.022/ .022 Lash

LOL. That is the same cam I just mentioned in the Howard thread that was symmetrical. I have have a lot of measurements for that profile.

[GTO-relic]

Originally Posted by Joe's Garage

Copied this page from a Crane catalog from somewhere.....

Part #284691
intake / exhaust
246* / 256* @ .050
.483" / .506" lift w/ 1.5s
.531" / .556" lift w/ 1.65s
lash .020" / .022"
112 centerline

thanks guys, I owe ya's all one...

[Jay S]

I believe that was the forerunner to the cam Paul listed. The next series was a couple degrees bigger with a little more intensity over the nose. I’ve had this in several engines. This is from the intake. Looked like new yet, and I know it had a second set of lifters broken in on it. Probably had 7000 miles on it a 600 1/4 mile passes. Tough cam.

Crane 248/258 SFT
.001 111
.002. 104.6
.003 99.6
.004. 95
.005. 89.6
.006. 84.8
.007. 79.8
.008. 74.8
.009. 70
.010. 65.2
.011. 60.6
.012. 56
.013. 52
.014. 48.2
.015. 45.6
.016. 43.2
.017 41.2
.018. 39.8
.019. 38.2
.020. 37.2
.021. 36.2
.025. 32.2
.030. 29.2
.040. 23.6
.050. 19
.060. 15
.070. 11.4
.080. 8
.090 5
.1. 1.6. Coming up on zero
.110. 1.4 past zero now
.120. 4.6
.130. 7.6
.14. 11.4
.15. 13.4
.2. 28.8
.25. 46
.3. 69.4
.31 76.4
.32. 83.6
.330. 95.6
.3334 max lift
.330. 120.6
.32. 132.8
.31. 140.2
.3. 146.5
.25. 168.8
.2. Passed 180. Going down 174.6
.15. 160
.10. 146
.090. 142.8
.080 139.4
.070. 136.4
.060. 132.8
.050. 129
.040. 124.4
.030. 118.8
.025. 114.8
.021. 110.6
.020. 109.6
.019 107.6
.018. 105.4
.017. 103
.016. 100
.015. 96
.014. 92.4
.013. 88.4
.012. 84
.011. 79.8
.010. 75.6
.009. 71.2
.008. 67
.007. 62.8
.006. 58.6
.005. 54
.004. 49.2
.003. 45
.002. 36
.001. 33
.0005 went to zero

[Stan Weiss]

That cam has some huge lash ramps. Reminds me of the Chevy 30 30 cam.

Stan

[GTO-relic]

this Crane is on a relatively wide LSA 112 degrees, more like the stock GM Pontiac cams, RA III, RA IV, RA V.
whereas today most everything new is cut on a 110 LSA or tighter.

[STEELCITYFIREBIRD]

Originally Posted by PAUL K

They had a CC290A-NC "Commander" listed in the 1984 catalog

290/300 adv

248/258 .050

.500/.525

112 LSA

.022/ .022 Lash

Not sure of year of this catalog page, but it’s listed here.