Stingy74
Senior
Member
1913 posts
[100%]
Eh, Aboot, Hoser, etc... Regina, Sask.
Canada
   |
 I made a graph to compare the
700-R4 to an M-21 |
5:15
PM 3/20/2002 |
 | |
I thought i'd take a really wide ratio
transmission (700-R4) and compare it with a very close ratio
transmission (M-21). I was quite amazed at what I got. If it
matters, I used a 28.5" slick with 4.88 gears and a 7000rpm
redline. Oh, and a 120mph trap speed.
[Modified by Stingy74, 8:55 PM 3/20/2002]
[Modified
by Stingy74, 9:06 PM 3/20/2002]
_______
E-Mail me
here
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See and hear my car here!
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|
Budman78
Senior
Member
.jpg)
1536 posts [100%]
This space for rent
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Stingy74) |
5:45
PM 3/20/2002 |
| |
Cool graph. I didn't realize that the shift
points where that steep on the 700. From 7000 to 4000, you
better have a good flat torque curve for it. Thanks Stingy, I
will save that for later use. 
_______
 
http://www.corvetteforum.net/c3/budman78/
|
Stingy74
Senior
Member
1913 posts
[100%]
Eh, Aboot, Hoser, etc... Regina, Sask.
Canada
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Budman78) |
6:02
PM 3/20/2002 |
| |
Budman, if you listen to the engine in my
second video you'll notice that my non low end torque engine
really suffers from the super wide ratio's. The 4.11's help
offset the difference, but it could still be
better.
_______
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here
Pictures Here
See and hear my car here!
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|
bence13_33
Senior
Member
1938
posts [100%]
Clymer PA
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Stingy74) |
6:15
PM 3/20/2002 |
| |
Excellent graph Aaron! Whenever I watched your
video, I could tell that your RPMs dropped pretty
significantly. What exactly are the ratios of the 700R4? I'm
hoping that my wide ratio Super T10 won't drop too badly (RPM
wise)...I think the torque of the big block will also help out
though.
_______
Coming On
3-31-02: 468 Big Block 
'76 Flame Orange Coupe/Black Leather
Interior
My Home Page: http://temp.corvetteforum.net/c3/bence454
|
Stingy74
Senior
Member
1913 posts
[100%]
Eh, Aboot, Hoser, etc... Regina, Sask.
Canada
|
| Re: I made a graph to compare the
700-R4 to an M-21 (bence13_33) |
6:21
PM 3/20/2002 |
| |
quote:
Excellent graph Aaron! Whenever I watched your video, I
could tell that your RPMs dropped pretty significantly. What
exactly are the ratios of the 700R4? I'm hoping that my wide
ratio Super T10 won't drop too badly (RPM wise)...I think
the torque of the big block will also help out though.
In the video you can tell that the second to third gear
shift is pretty bad because the converter locks in the top of
second as well. The 700-R4 ratio's are: 3.06, 1.63, 1.00, .70.
You are right when you say that torque will help in the
situation of a wide ratio transmission, Give me a minute and
i'll do a comparo for your transmission as
well.
_______
E-Mail me
here
Pictures Here
See and hear my car here!
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|
Stingy74
Senior
Member
1913 posts
[100%]
Eh, Aboot, Hoser, etc... Regina, Sask.
Canada
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Stingy74) |
6:34
PM 3/20/2002 |
| |
Ok, she's fixed now! 
[Modified by Stingy74, 9:07 PM
3/20/2002]
_______
E-Mail me
here
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See and hear my car here!
1 2
|
Budman78
Senior
Member
1536 posts [100%]
This space for rent
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Stingy74) |
6:45
PM 3/20/2002 |
| |
That video doen't do your car justice though.
It seems like you are just casually cruising along and I bet
you are hitting over 100 at the end.
|
Stingy74
Senior
Member
1913 posts
[100%]
Eh, Aboot, Hoser, etc... Regina, Sask.
Canada
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Budman78) |
7:09
PM 3/20/2002 |
| |
quote:
That video doen't do your car justice though. It seems like
you are just casually cruising along and I bet you are
hitting over 100 at the end.
I reach the top of 3rd and dip into 4th a bit there. By the
numbers that's a hair over 120.
_______
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|
Stingy74
Senior
Member
1913 posts
[100%]
Eh, Aboot, Hoser, etc... Regina, Sask.
Canada
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Bence13_33) |
7:48
PM 3/20/2002 |
| |
Bence, here's the rundown on your cars
transmission. As you can see, the gear spacing is better than
my automatic.
[Modified by Stingy74, 9:49 PM
3/20/2002]
_______
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|
bence13_33
Senior
Member
1938
posts [100%]
Clymer PA
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Stingy74) |
7:55
PM 3/20/2002 |
| |
Aaron:
That's not as bad as I thought
it would be. What gear ratios did you come up
with?
|
Stingy74
Senior
Member
1913 posts
[100%]
Eh, Aboot, Hoser, etc... Regina, Sask.
Canada
|
| Re: I made a graph to compare the
700-R4 to an M-21 (bence13_33) |
8:03
PM 3/20/2002 |
| |
For fun, here's a Powerglide (racers choice). I
IM'd you the Borg Warner ratio's I used. If you didn't get
them, they are 2.88, 191, 1.33, 1.00
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|
Jester69Stingray
Senior Member
.jpg)
328 posts [100%]
Pflugerville/ Colllege
Station TX
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Stingy74) |
8:12
PM 3/20/2002 |
| |
Those graphs are cool
If its not too much
trouble could you do one for a M20
2.52 1.88 1.46
1.00
Im curious to see the diffrence between that and the
M21
Thanks
[Modified by Jester69Stingray, 10:14 PM
3/20/2002]
_______
Justin
http://forums.corvetteforum.com/My%20Webpage
'69 Convertible
L46 350
M20 4spd
Daily Driven
|
gerry c
Senior
Member
130
posts [100%]
Lake Hughes CA
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Stingy74) |
8:18
PM 3/20/2002 |
| |
The numbers compared to the Super T-10 look
about perfect. Are those S T10 numbers that I would have in my
'81?
The 1-2 shift in a 700R4 is a killer. I have one in my '89
Jimmy and could not believe people would put one in for a
performance upgrade.
_______
1981 ext silver/blue
int blue
four speed
56K original miles
all stock
except aftermarket 15x8 wheels and koni shocks
 
|
Stingy74
Senior
Member
1913 posts
[100%]
Eh, Aboot, Hoser, etc... Regina, Sask.
Canada
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Jester69Stingray) |
8:44
PM 3/20/2002 |
| |
quote:
Those graphs are cool
If its not too much trouble could
you do one for a M20
2.52 1.88 1.46 1.00
Im curious
to see the diffrence between that and the M21
Thanks
Here the m21/m22 comparo:
[Modified
by Stingy74, 10:45 PM 3/20/2002]
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|
67HEAVEN
Senior
Member
2100 posts
[100%]
Southern Ontario...closer to Heaven.
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Stingy74) |
8:57
PM 3/20/2002 |
| |
Good stuff.
How about:
Richmond 6-speed
3.27 - 2.13 - 1.57 -
1.23 - 1 -
0.76
-----------------------------------------------------------
Richmond
6-speed
3.01 - 1.88 - 1.46 - 1.19 - 1 -
0.62
-----------------------------------------------------------
|
Stingy74
Senior
Member
1913 posts
[100%]
Eh, Aboot, Hoser, etc... Regina, Sask.
Canada
|
| Re: I made a graph to compare the
700-R4 to an M-21 (67HEAVEN) |
9:56
PM 3/20/2002 |
| |
Here's your graph  For some
reason I became very frustrated making the last few graphs, so
I hope they are right!
_______
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here
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See and hear my car here!
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|
MARKUS_P
Senior
Member
.gif)
602 posts [100%]
near VIENNA, AUSTRIA
|
| Re: I made a graph to compare the
700-R4 to an M-21 (Stingy74) |
3:44
AM 3/21/2002 |
| |
Stingy, one last graph for me? 
Could you add the common TH350 from my 76 to
your first graph where the 700R4 is shown?
That would give
me a good comparison
Thanks,
Markus
_______
------------------------
355cui, 375
HP, 750 edelbrook, 550 lbs VB coils, fiberglas rear spring, VB
o-ring calipers, steel braided hoses, hole shot 2000 torque
converter, 3,08 gear ratio, TH 350 modified for shorter and
crisper shifts, ACCEL high output coil, recurve kit,holley
fuel pump, dynomax coated headers and ultra flow mufflers,
etc. etc., Currently restoring the body
|
69Roadster
Senior
Member
560 posts
[100%]
Madison AL
|
| Re: I made a graph to compare the
700-R4 to an M-21 |
7:19
AM 3/21/2002 |
| |
Great stuff! Thanks for posting it.
[Modified by 69Roadster, 3:17 PM
3/21/2002]
_______
1969 Roadster Big Block
4-speeds
One black, one being painted red, one bare
fiberglass
69Roadster's Place
|
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