The 3/4 race cam?
 

It goes in here -

Oh Boy. Glad I am not in the NHRA!

?? what am I missing ?

Don't even try to put it in those holes, it will bung it all up.

Based on the size of those holes you may want to consider a more radical cam - something on the order of 7/8 :p

Randy

That's not TC's new block. Saw the boys down in McDonough working on it Tuesday.
PS whats this thread about anyway??? :LOL:

I haven't figured it out myself. But as long as we're all throwing out fractions, I'm kinda partial to 17/32 myself.

Needed room to grow, so this is part of my winter upgrade. It's like TCs body, genuine recycled beer cans. Horsepower capacity is counted in thousands, so it should handle my 3-digit numbers without a problem. Johan - it fit better after I filed the lumps off the cam - probably makes it about a 13/64 now.

Blykins: You got to know the men behind the thread to even guess what it would be about. Kind of like mad scientist - marketer extraordinaire - Roland Martin! Eccentric would be a common thread.

I remember my granpda talking about 3/4 race cams....but I don't really know what they are. Aren't those from back in the days when everybody had F70 radial tires, a shackle kit, and a set of Cragar S/S mags????

Russ

Yeah, I've always heard the term, but never figured it out....I thought maybe it was a .750" lift.....extremely radical.

History of the "3/4 race cam"
 

compiled by
HARVEY J. CRANE, JR.
October 1, 1999

Ed Winfield made his first performance camshafts in 1914. These were motorcycle cams with individual lobes pinned to a shaft.

His first automotive camshafts were ground in 1919 when he built his first homemade cam grinder. Ed was 17 years old at that time.

Ed told me his mother gave him the money to purchase a used grinding machine that he converted to a cam grinder by adding a rocker table. This homemade cam grinder was used in his mother's garage to regrind Ford Model T camshafts into racing specifications.

Ed told me he first made only two masters, a SEMI RACE GRIND and a FULL RACE GRIND! He later made a third master that was more duration and lift than the SEMI but less than the FULL. He then used the FULL RACE master as an intake and the new master as an exhaust.
He called this new reground camshaft a THREE QUARTER RACE CAM! Ed said "It was three quarters of the way to a full race cam".

According to Dema Elgin, ED began working for Harry Miller at the age of 14 1/2 in the carburation department. Within a few months he was doing other machine work on the famous Miller racing engines. Harry wanted Ed to stay on with him and offered Ed more money. Ed was being paid .60 cents per hour and was offered .70 cents, but ED wasn't fond of Harry because he was like a dictator.

Ed quit grinding camshafts in October of 1969 after he finished a batch of Drake Offenhauser camshafts. That's 55 years of grinding cams!

So John Owen,

Is this a block from Warren Johnson or similar?? I know there is a premier drag race motor builder out in Winder I think.

The block is from Raceparts Distribution in NC. Engine Systems in Tucker is a premier 460 shop and will do machine work on the block and crank, then balance the rotating assembly. Jon Kaase is the fellow in Winder, designed the SCJ heads for Ford, recently won a big block horsepower shootout, and does big drag engines. He has consented to do a little work on my SCJ heads and spec a new custom Comp solid roller cam for the motor. I will do the assembly, and if it runs, take it to Ed Senf for basic DFI map. Boredom is an expensive thing.

Note: It will still be primarily a street car - spontaneous road trips are the reason I built it.

Boredom? I thoughty that was your worst nightmare? So what are the specs? CI, CR and internal components, etc.? 11.9's @128 and no traction wasn't enough - I guess a 5 point cage is also on the list of upgrades!:D

Russ, blykins now you know - some of us are old indeed - we had 3/4 cams in high school.

John Owen I can't afford to be bored, however I have been stroked a few times.

Let me know when the build starts I gotta see your handy work.

Randy