"Old School" Stocker Cams
 

I was reading the Jr. Stock book by Doug Boyce and came across where a guy went down to Lunati's shop to pick up a Stocker cam for his 56 Chevy M/SA car and how the Lunati cam really woke up the 265 and how he was able to run under the record with it.

Having somewhat of a idea on how the old Stock duration and stock lift cams worked, I would like to hear more about how these camshafts worked including with the stock valve spring rules?

This is just for winter discussion fun..Thanks !

Will Lamprecht
65 Impala 396/325
Have Jerico for it.

Re: "Old School" Stocker Cams
 

They actually checked lift and duration. Also checked springs.

Re: "Old School" Stocker Cams
 

The best cam that I ever had in my 307 Chevy was an old CamDynamics Jr. Stock cam. As best I can remember it was a 929-G.

Re: "Old School" Stocker Cams
 

Also part of the spec was "checking clearance" The duration was measured after the lift at the valve hit the opening checking clearance then finished when the lift was at the closing checking clearance . It was good to have" big" checking clearances sent in by the factory . Overlap was checked the same way . NHRA tech had a really trick Degree Wheel that simplified the checking process .

Re: "Old School" Stocker Cams
 

Our Div 4 head tech inspector, Red Anderson, was also a good machinist. He made, and sold a really trick degree wheel.
I had one of those Lunati Jr Stock cams in my ‘56 when I set one of my records. During tear down Red told me “this thing does hit the numbers, but the ramps are way fast. I’m going to pass it this time, but we both know it’s wrong. I don’t want to see it again.
Ran just as fast with a Cam Dynamics, which Red liked better next time he tore me down. The Lunati looked like a roller cam. Almost square lobes. LOL

Re: "Old School" Stocker Cams
 

The "square lobe" cam profiles are known as "dwell" lobes. With a dwell lobe, you can basically put a lifter on top of the lobe and it will not fall off!

Don Teweles at General Kinetics, along with Joe Lunati were pioneers on dwell lobe Stocker camshafts in the early days. Cam Dynamics also created many Stocker dwell cams that were crazy fast too.

After Don shuttered General Kinetics, my preferred brand was Cam Dynamics when Glen Steyer's was still at Crane Cams.

Let's not forget that in the early days, although they checked duration, lift and overlap, the OEM's had submitted some crazy camshaft specs too, especially regarding overlap.

Re: "Old School" Stocker Cams
 

327ci /275hp

We ran a 929-D....

Wild and crazy guys who wanted to run a valve spring killer

Re: "Old School" Stocker Cams
 

I am confused? The cam in my 396/325 BBC has that "'square lobe" being only a .398 lift cam too. Isn't that due to the duration in the cam? So if you had too use Stock durations back then..how could they have square lobes? I was thinking they changed the LSA from stock for more overlap..

Re: "Old School" Stocker Cams
 

Lift stays the same it just gets to max lift quicker and stays there longer until it slams back down on the seat....

Re: "Old School" Stocker Cams
 

George Widuch had a huge influence in the design and testing of the early Stock and Super Stock cams from Lunati. George is brilliant.