General kinetics cam Id.

Lyn Smith · 02-05-2016, 02:45 PM

I have run across a Gk cam Cic 431-f for a sbc.Can someone come up with the specs for it? Thanks

FED 387 · 02-05-2016, 04:23 PM

Try nastyz28.com website he had some old GK catalogs. Fed387

ss wannabee · 02-07-2016, 11:59 AM

Don't think you'll find it in a catalog...Believe you have a "431" Stocker cam for the
early 283-327 engines...I had a GK catalog back in the day and the Stocker grinds
weren't listed...They DID have page saying that they did make Stock "cheater" cams
and that you had to call for info...The other major companies did the same....

This is probably because there was a lot of R & D going on and many changes...
hence the "f" connotation...in your case...betcha there was a "431-plain"..then
an "A".."B"..."C"...etc...all pretty much "different"...even though ALL met "lift-duration
and overlap as per the rules at that time...

MAYBE there's some veteran enthusiasts on here that might be familiar with these
cams...NOT sure if you can tell the AGE of the cam...whether it was ground in the
pre-1972 "hey-day"...or later...for real specifics I would try to contact whomever
bought GK's data...when they eventually closed...but it might be too much trouble...

For starters...I would try to confirm the approx. .266" lobe lift it should have...oh
BTW, I think the cam had .399" lift at the valve...and 300?-degrees advertised
duration..and of course...it was hydraulic lifter as an OEM...

Think GK favored "dwell-type" lobes...I remember when Cam Dynamics came on
the scene and offered the "7000-series" Stocker cam as an alternative...

Hope this he

Dwight Southerland · 02-07-2016, 04:57 PM

Lyn -
If it helps, I had a GK 431-D camshaft that was 248 degrees duration @ .050" for both intake and exhaust, 110 lobe separation and .265" lobe lift. It was for 57-66 SBCs with the NHRA specs of 300 degrees duration intake and exhaust, 78 degrees overlap and the .398" valve lift. It was the first "cheater" cam I ran in the 283 Chevelles.

Lyn Smith · 02-07-2016, 10:22 PM

Thanks for the info guys.I got it from a old stock racer that ran a 283 stocker.The lobes are the "dwell type" flat top.

02-05-2016, 02:45 PM	#1
Lyn Smith VIP Member Join Date: Dec 2001 Location: Pontiac,il. Posts: 1,121 Likes: 217 Liked 841 Times in 156 Posts	General kinetics cam Id. I have run across a Gk cam Cic 431-f for a sbc.Can someone come up with the specs for it? Thanks

02-05-2016, 04:23 PM	#2
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,349 Likes: 328 Liked 280 Times in 150 Posts	Re: General kinetics cam Id. Try nastyz28.com website he had some old GK catalogs. Fed387

02-07-2016, 11:59 AM	#3
ss wannabee Senior Member Join Date: Jun 2005 Posts: 663 Likes: 0 Liked 5 Times in 5 Posts	Re: General kinetics cam Id. Don't think you'll find it in a catalog...Believe you have a "431" Stocker cam for the early 283-327 engines...I had a GK catalog back in the day and the Stocker grinds weren't listed...They DID have page saying that they did make Stock "cheater" cams and that you had to call for info...The other major companies did the same.... This is probably because there was a lot of R & D going on and many changes... hence the "f" connotation...in your case...betcha there was a "431-plain"..then an "A".."B"..."C"...etc...all pretty much "different"...even though ALL met "lift-duration and overlap as per the rules at that time... MAYBE there's some veteran enthusiasts on here that might be familiar with these cams...NOT sure if you can tell the AGE of the cam...whether it was ground in the pre-1972 "hey-day"...or later...for real specifics I would try to contact whomever bought GK's data...when they eventually closed...but it might be too much trouble... For starters...I would try to confirm the approx. .266" lobe lift it should have...oh BTW, I think the cam had .399" lift at the valve...and 300?-degrees advertised duration..and of course...it was hydraulic lifter as an OEM... Think GK favored "dwell-type" lobes...I remember when Cam Dynamics came on the scene and offered the "7000-series" Stocker cam as an alternative... Hope this he

02-07-2016, 04:57 PM	#4
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 1,980 Likes: 53 Liked 724 Times in 177 Posts	Re: General kinetics cam Id. Lyn - If it helps, I had a GK 431-D camshaft that was 248 degrees duration @ .050" for both intake and exhaust, 110 lobe separation and .265" lobe lift. It was for 57-66 SBCs with the NHRA specs of 300 degrees duration intake and exhaust, 78 degrees overlap and the .398" valve lift. It was the first "cheater" cam I ran in the 283 Chevelles. __________________

02-07-2016, 10:22 PM	#5
Lyn Smith VIP Member Join Date: Dec 2001 Location: Pontiac,il. Posts: 1,121 Likes: 217 Liked 841 Times in 156 Posts	Re: General kinetics cam Id. Thanks for the info guys.I got it from a old stock racer that ran a 283 stocker.The lobes are the "dwell type" flat top.