3/4 race cam
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Nasty Wendy
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Well if they have a buick v6 they mean that 9 of the lobes have an aggressive race profile and 3 of the lobes have the stock profile.
HOT ROD-GN
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That old guys talk
!!!!
!!!!HOT ROD-GN
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I remember way way back in the in the days guys with there 30/30 cams.. had one in my 69 z/28 dz motor.that was BAD ASS CAM!!:biggrin:
Just a Six??
OK! Who Farted??
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We have 3/4 race cams cuz its only a 6 cyl & missing 25% of the cam. 
We have 3/4 race cams cuz its only a 6 cyl & missing 25% of the cam.
Or because 25% of the lobes are flat.......
I think they mean that it works well over a 3/4 mile race. Way more top end than one for a 1/4 mile.
This topic reminds me of the local chevy guy who said, and I qoute: "I bought the short block because I didn't know if the long block would fit in my camaro, plus it was cheaper, but when it showed up it didn't have any heads on it."
This topic reminds me of the local chevy guy who said, and I qoute: "I bought the short block because I didn't know if the long block would fit in my camaro, plus it was cheaper, but when it showed up it didn't have any heads on it."
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3/4 cams must not be a good choice...all the engines I've heard idling with it was skipping bad????
The term comes from way back (obviously) when what was considered a full race cam was what the NASCAR engines used. This was a solid lifter, huge lift & duration cam. Very radical at the time, very mild by todays standards.
The next size smaller was 3/4 of the full race spec. Hence the term, and was used by many.
The next size smaller was 3/4 of the full race spec. Hence the term, and was used by many.
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This ^^
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BTW here is a link to the real answer:
Secrets 7
The text for those who don't want to click it:
ED WINFIELD
HIS HISTORY AS A CAMSHAFT MANUFACTURER
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!
Secrets 7
The text for those who don't want to click it:
ED WINFIELD
HIS HISTORY AS A CAMSHAFT MANUFACTURER
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!
TURBOPOWERED68
David
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- 8,819
we are not alone 3/4 race cam ? - Page 2 - Chevelle Tech
i thought like the guy in the other thread
.750" lift cam.
.500" = 1/2
.750" = 3/4
i thought like the guy in the other thread
.750" lift cam.
.500" = 1/2
.750" = 3/4
