L-100 Cam specs

[russcc]

I swear that I have seen the specs for the Litterio Bros. L-100 cam on the Fordbarn before. I did a search but could not find them. There is an old time cam grinder who says he may have a similar cam, but needs the L-100 specs which he had not heard of before. Anyone able to help out.
Thank you Fordbarners.

 

[JSeery]

There were several posted:
wga posted -
L-100 Cam Tech Solid Lifter Flathead Ford V-8
Valve Lash
Intake .016 Exhaust .016 Lift
Intake .375 at cam
Exhaust .375 at cam

Duration
Intake 270 degree advertised 246 degree at .050 cam lift
Exhaust 260 degree advertised 238 degree at .050 cam lift

Valve timing at .050 cam lift
Intake opens 15 BTDC closes 51 ABDC
Exhaust opens 55 BBDC closes 3 ATDC

rooboy posted -
These spec's are on Cam Techniques letter head posted to me with the cam about 3 yr's ago.
Grind......L 100-10
Valve lash..
Int............016.........Ex.......018 cold
Lift.
Int........ .375.........Ex...... 375. at cam
Duration..
Int........ .270*....... advertised....... 246* at ..050 cam lift...
Ext....... .260*........----------....... 238* --------- -------...
Valve timing at .050 cam lift
Int. opens 17 BTDC closes 49 ABDC
Ex. opens 53 BBDC closes 5 ATDC
These timing #'s indicate 4* advance 106* Int. C/L...
They're some small differences in WGA's post....I'm not sure why ?
A great cam !........

 

[PeterC]

Here you go ... see attached

 

[Ol' Ron]

One thing you have to remember about cam numbers. They do not represent the profile, they give you a sense, but the actual profile determines the acceleration and deceleration of the valve. This in turn determines the valve spring pressure needed to operate the valve at speed. When I first saw the specs I told the customer the cam was too radical for the application. A 5500 lb 1942 Ford ambulance. That was over 20 years ago. For reasons that still Bafacate me, I have no idea why it pulls so good at low RPM? Why it gives great fuel mileage in a properly tuned engine? If you haven't run one, you'll never know. I hope some one gets the masters from David. I don't think there's a better cam available for the flathead engine and I've run allot of them.

 

[jack orchard]

Ron: The cam card from David says 4 degrees advanced and 108 degree intake centerline. Does that mean the cam should be advanced 4 degrees at the cam gearset? Thanks, jack

 

[Ol' Ron]

I'm sure that information would be valuable to some racers that usually advance or retard their cams for track reasons. Not sure if you'd realize any difference in a street aplication, although I've never tried it. I run them straight up, just as they come out of the box.

 

[Burton]

Would this be too much cam for a stock 59A with 2 97's and Fenton headers?

 

[Pete]

Would this be too much cam for a stock 59A with 2 97's and Fenton headers?

Generally speaking, yes.
Some people would tolerate it for brag rights though.

 

[Ol' Ron]

Yes, Pete's right. I did have one in a 239 in a model A roadster. Had the CR up around 7.5. It had a 4.11 rear and a T-5, so it got along just fine.

 

[Pete]

Ron: The cam card from David says 4 degrees advanced and 108 degree intake centerline. Does that mean the cam should be advanced 4 degrees at the cam gearset? Thanks, jack

Advancing the cam will sometimes help the low end performance.
Likewise, retarding sometimes helps the top end.

If it is recommended that the cam be installed 4 deg advanced, they have probably found by dyno or track testing that is the best setting.
This requires some sort of adjustable drive gear or offset dowels depending on the engine.