For those of you that want to run a factory 68 340 4-speed cam...

I worked with another member here and we sent one of my cams that was custom ground to be a clone of the 68 340 4-speed cam to Ken Heard at Oregon Cams and they measured it so they can duplicate it and now have it available for sale.

Here are the Oregon Cam specs/details:

#2120

221/227 @ .050”, 276/286 adv, .438”/.456” lift, 114 sep


Per the 68 Plymouth service manual, the factory specs are:

276/284 dur, .444"/.453" lift

Int op = 26° BTC
Int cl = 70° ABC
Exh op = 78° BBC
Exh cl = 26° ATC

From calculations:

Intake centerline = 112° ATC
Exhaust centerline = 116 BTC
Lobe separation = 114°



This is the grind we have been using that is supposed to be the cam you are inquiring about. We made this master from a cam that a customer supplied us that was supposed to be the factory Mopar cam. We have made quite a lot of them. We can do a regrind for $79 on your core or make a new one for $179.

Thanks

Ken
1-800-539-9165




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I have added this for documentation on the cams that were used for this project... I bought them from another FABO member who had them custom ground, they are not factory original or Mopar Performance cams but were ground to the factory specifications....

Here is the PM info that I got from the Member who sold then to me, he was in Washington...


340 Cam Email Info A02a.jpg



340 Cam Email Info A02b.jpg



Here is the cam that was ground to the stock 340 automatic cam specs...

Per the 68 Plymouth service manual, the factory specs are:

268/276 dur, .429"/.444" lift 44° overlap


340 Cam A13.JPG



Here is my tag with the info that I did when I degreed them myself....

340 Cam A15.JPG



Here are the markings that were on the end of the cam...

340 Cam A16.JPG



Here is the layout data from Ken when he put them on his cam inspection machine....

340 Cam A10b.jpg



Here is the cam that was ground to the stock 68 340 4-speed cam specs...

Per the 68 Plymouth service manual, the factory specs are:

276/284 dur, .444"/.453" lift 52° overlap


340 Cam A01.JPG



Here is my tag with the info that I did when I degreed them myself....

340 Cam A03.JPG




340 Cam A02.JPG



Here are the markings that were on the end of the cam...

340 Cam A05.JPG



Here is the layout data from Ken when he put them on his cam inspection machine....

340 Cam A09b.jpg