Enough Covid Bull$hit

[Greg Gay]

I don't know the purpose of the 4.56 gears, but the more that I think about it, I think I described what they called the Junior Stock Classes. As to the transmission rules, they had separate manual and automatic classes, and I THINK you had to run the transmission that the car came with. Of course with our modern version, you'd probably get 4 speed manuals and 3 speed automatics, too. I remember one guy, Jean Plouffe, won the points championship with a 66 Chevelle, 327 and 3 speed manual transmission.

The 4.56 gear rule might have inadvertently closed the advantage of the small cubic inch engines as the larger engines might have been able to take advantage of their torque, leveling the playing field somewhat, and also kept the combinations more mild. Perhaps they thought that 4.56 was about all that you could reasonably drive on the street? I'm just guessing.

There was also a Top Stock class, which may be more like the Formula Stock classes. I BELIEVE about the only difference was unlimited camshaft, though I don't even know if roller cams existed then, and no gear rule. There were also 3 levels of Classes in Top Stock A "1" designated multipIe carburetion. A "2" was for 3 and 4 barrel carburetion, and a "3" was 1 and 2 barrel carbs. I know that there is a rule book or two in my parents' cellar, but they are in their 80's and quarantined, so I haven't been in their house in about 5 weeks.

[Stan Weiss]

Originally Posted by Greg Gay

I don't know the purpose of the 4.56 gears, but the more that I think about it, I think I described what they called the Junior Stock Classes. As to the transmission rules, they had separate manual and automatic classes, and I THINK you had to run the transmission that the car came with. Of course with our modern version, you'd probably get 4 speed manuals and 3 speed automatics, too. I remember one guy, Jean Plouffe, won the points championship with a 66 Chevelle, 327 and 3 speed manual transmission.

The 4.56 gear rule might have inadvertently closed the advantage of the small cubic inch engines as the larger engines might have been able to take advantage of their torque, leveling the playing field somewhat, and also kept the combinations more mild. Perhaps they thought that 4.56 was about all that you could reasonably drive on the street? I'm just guessing.

There was also a Top Stock class, which may be more like the Formula Stock classes. I BELIEVE about the only difference was unlimited camshaft, though I don't even know if roller cams existed then, and no gear rule. There were also 3 levels of Classes in Top Stock A "1" designated multipIe carburetion. A "2" was for 3 and 4 barrel carburetion, and a "3" was 1 and 2 barrel carbs. I know that there is a rule book or two in my parents' cellar, but they are in their 80's and quarantined, so I haven't been in their house in about 5 weeks.

I do not know when then is. I also do not know when the first roller cam was made. I can say the in the mid '60s I ran an Engle roller cam. And if anyone thinks that tight lash is something modern it had 0.012" I and 0.014" E lash.


Stan

[Dan Fahey]

Originally Posted by Stan Weiss

I do not know when then is. I also do not know when the first roller cam was made. I can say the in the mid '60s I ran an Engle roller cam. And if anyone thinks that tight lash is something modern it had 0.012" I and 0.014" E lash.


Stan

I do know that the Allison 1710 V12 engine was designed in 1935 as single OHC engine with Roller Rockers..so that would make it a Roller Cam Engine.

[Mark Yacavone]

Museum in Death Valley..Year? ...Old!

[Stan Weiss]

Mark,
Interesting setup. One roller diameter looks like twice the diameter of the other. Any idea who the manufacture was?



Stan

[Mark Yacavone]

Originally Posted by Stan Weiss

Mark,
Interesting setup. One roller diameter looks like twice the diameter of the other. Any idea who the manufacture was?



Stan

Only what I can read here..

[63corvette]

Originally Posted by Mark Yacavone

Museum in Death Valley..Year? ...Old!

My guess on this is it could be a old natural gas 2 cycle engine and the large roller setup is for the injection valve in the head. I have seen roller lifters on the old engines dating back to the 1930's.
I worked in the gas transmission and oil field all my life and there are many strange setups produced by many different manufactures.
Cooper-Bessemer made many different natural gas engines in some very strange configurations.
I toured their Pa. facilities in the mid 1980's and it was so diverse. Old equipment dating back 40 or 50 years producing state of the art equipment at that time.
They employed a great number of employees.
I really enjoyed seeing the casting part of the operation for the large parts.
Just My Take
Rick Cates
Canyon, TX

[Mike Taylor 3601]

Originally Posted by Dan Fahey

I do know that the Allison 1710 V12 engine was designed in 1935 as single OHC engine with Roller Rockers..so that would make it a Roller Cam Engine.

I built a 1928 Buick engine.... the engine was identified as standard...
it had roller lifters... there was something else about it that was ''ahead of it's time'' can't remember what at moment...
was it Herbert or Isky had first roller cams for small block chevrolet

[Dan Fahey]

Originally Posted by Mike Taylor 3601

I built a 1928 Buick engine.... the engine was identified as standard...
it had roller lifters... there was something else about it that was ''ahead of it's time'' can't remember what at moment...
was it Herbert or Isky had first roller cams for small block chevrolet

Found this on Warbirds Online

[Frank Castros]

http://classracer.com/classforum/att...1&d=1588111733

The Sox & Martin A.H.R.A GT-1 'Cuda. The record holder of course. The only 'Cuda they built that actually had a VIN.