Stocker Cylinder Heads....

Run to Rund · 06-22-2012, 11:44 AM

I read somewhere that early stocker "cheater" cams were made from cams with a lot more lift, cut down to allowable, and the sharp corners were rounded with a belt sander just enough that the engine could get the rpm it needed.

Harry 6674 · 06-22-2012, 03:27 PM

They sure were hard on stuff.

James L Miller · 06-22-2012, 04:07 PM

I seem to remember the Mopar 340 specs at 336/348 duration intake/exhaust respectively. I think the 383/440 HP combos had a similar duration way back when. I wasn't sure if it was zero to zero or maybe the first hint of movement to where it stops moving? I sort of remember a BB Chevy cam had 360 degrees of duration.

Tom keedle · 06-22-2012, 07:29 PM

Quote:

Originally Posted by Run to Rund

I read somewhere that early stocker "cheater" cams were made from cams with a lot more lift, cut down to allowable, and the sharp corners were rounded with a belt sander just enough that the engine could get the rpm it needed.

sounds like the cam i've got...

Greg Reimer 7376 · 06-22-2012, 07:55 PM

Dwight-- That was interesting. Nothing woke up those early SBC's more than good short block assembly and the right camshaft. Any more hisory lessons out there?

Dwight Southerland · 06-23-2012, 09:01 AM

Quote:

Originally Posted by Greg Reimer 7376

Dwight-- That was interesting. Nothing woke up those early SBC's more than good short block assembly and the right camshaft. Any more hisory lessons out there?

Yeah, Don't ever let anyone check your camshaft using a piece of masking tape wrapped around the balancer, a ball point pen to mark opening and closing and then measuring the distance between the marks to calculate duration.

Adger Smith · 06-23-2012, 09:28 AM

I was told that the "NEW" Legal valve job did away with the unshrouding rules (1/8 bigger than valve head) and the 1/4" (Seat) part of the rule.
Basically if you can do it "On center of the valve guide" it will pass. It doesn't matter if it is in the bowl area or chamber area as long as it is "On center of the valve guide Center Line. The only exception I got, if you want to call it that, was when I ask if anything could be "elliptical" The answer I got to that was a definition of "on center". I'm pretty sure that last line just gave away who was giving me the Vale Job information. I would bet quite a few of you know his "Style"... of giving answers.

Dean Feiock · 06-25-2012, 09:56 PM

I have added a poll in the member's area, just for fun.
http://classracer.com/classforum/showthread.php?t=41556

Bill Diehl · 11-01-2014, 10:57 AM

Bump, this is 2 years old now.....so how far down with the cutter can we go? on both ends of the job?

Are they going by looks, feelings, a measurement or who you are?

06-22-2012, 11:44 AM	#1
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 583 Likes: 8 Liked 54 Times in 27 Posts	Re: Stocker Cylinder Heads.... I read somewhere that early stocker "cheater" cams were made from cams with a lot more lift, cut down to allowable, and the sharp corners were rounded with a belt sander just enough that the engine could get the rpm it needed.

06-22-2012, 03:27 PM	#2
Harry 6674 Senior Member Join Date: Dec 2006 Posts: 589 Likes: 0 Liked 0 Times in 0 Posts	Re: Stocker Cylinder Heads.... They sure were hard on stuff.

06-22-2012, 04:07 PM	#3
James L Miller Member Join Date: Apr 2005 Posts: 494 Likes: 6 Liked 25 Times in 16 Posts	Re: Stocker Cylinder Heads.... I seem to remember the Mopar 340 specs at 336/348 duration intake/exhaust respectively. I think the 383/440 HP combos had a similar duration way back when. I wasn't sure if it was zero to zero or maybe the first hint of movement to where it stops moving? I sort of remember a BB Chevy cam had 360 degrees of duration. __________________ Mopar 2 Ya!

06-22-2012, 07:55 PM	#5
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,135 Likes: 172 Liked 705 Times in 219 Posts	Re: Stocker Cylinder Heads.... Dwight-- That was interesting. Nothing woke up those early SBC's more than good short block assembly and the right camshaft. Any more hisory lessons out there?

06-23-2012, 09:28 AM	#7
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Stocker Cylinder Heads.... I was told that the "NEW" Legal valve job did away with the unshrouding rules (1/8 bigger than valve head) and the 1/4" (Seat) part of the rule. Basically if you can do it "On center of the valve guide" it will pass. It doesn't matter if it is in the bowl area or chamber area as long as it is "On center of the valve guide Center Line. The only exception I got, if you want to call it that, was when I ask if anything could be "elliptical" The answer I got to that was a definition of "on center". I'm pretty sure that last line just gave away who was giving me the Vale Job information. I would bet quite a few of you know his "Style"... of giving answers. __________________ Adger Smith (Former SS)

06-25-2012, 09:56 PM	#8
Dean Feiock Member Join Date: Aug 2002 Location: Pierre, SD Posts: 204 Likes: 0 Liked 49 Times in 15 Posts	Re: Stocker Cylinder Heads.... I have added a poll in the member's area, just for fun. http://classracer.com/classforum/showthread.php?t=41556 __________________ Dean Feiock -- Stock 5002

11-01-2014, 10:57 AM	#9
Bill Diehl Member Join Date: Dec 2013 Posts: 311 Likes: 2 Liked 9 Times in 8 Posts	Re: Stocker Cylinder Heads.... Bump, this is 2 years old now.....so how far down with the cutter can we go? on both ends of the job? Are they going by looks, feelings, a measurement or who you are?