4 speeds
Burning Brakes
Joined: Oct 2012
Posts: 1,152
Likes: 252
Last edited by Dynra Rockets; Sep 26, 2017 at 09:43 AM.
Burning Brakes
Joined: Oct 2012
Posts: 1,152
Likes: 252
Pro
Joined: May 2016
Posts: 708
Likes: 150
From: Minnesota
Speaking of Muncie specifically, Close Ratio has a 2.20 low gear, and CLOSER spreads between the gears 1-2-3-4. It is a bit tougher (not as much torque multiplication) to launch, especially with highway gears, but once in the power range of the motor (mid-higher rpm), as you shift it will help keep you in that rpm range and keep your momentum.
Wide Ratio typically have a 2.52 low gear, and WIDER spreads between your shifts 1-2-3-4. For street driving especially, the wide ratio provides a lower overall gear ratio (given same rearend) than the close ratio, so is a bit easier to launch and take off. One of the trade-offs is larger rpm drops between each gear as you shift. For racing one might not want that. The nice part of the wide ratio is you can get away with a more friendly highway type rear gear, but still manageable to launch around town.
Both have their place, depending on what you want to do with the car. There are also aftermarket gears offered to help you better match what you are trying to accomplish.
Wide Ratio typically have a 2.52 low gear, and WIDER spreads between your shifts 1-2-3-4. For street driving especially, the wide ratio provides a lower overall gear ratio (given same rearend) than the close ratio, so is a bit easier to launch and take off. One of the trade-offs is larger rpm drops between each gear as you shift. For racing one might not want that. The nice part of the wide ratio is you can get away with a more friendly highway type rear gear, but still manageable to launch around town.
Both have their place, depending on what you want to do with the car. There are also aftermarket gears offered to help you better match what you are trying to accomplish.
Thread Starter
Intermediate
Joined: Jul 2012
Posts: 38
Likes: 0
Speaking of Muncie specifically, Close Ratio has a 2.20 low gear, and CLOSER spreads between the gears 1-2-3-4. It is a bit tougher (not as much torque multiplication) to launch, especially with highway gears, but once in the power range of the motor (mid-higher rpm), as you shift it will help keep you in that rpm range and keep your momentum.
Wide Ratio typically have a 2.52 low gear, and WIDER spreads between your shifts 1-2-3-4. For street driving especially, the wide ratio provides a lower overall gear ratio (given same rearend) than the close ratio, so is a bit easier to launch and take off. One of the trade-offs is larger rpm drops between each gear as you shift. For racing one might not want that. The nice part of the wide ratio is you can get away with a more friendly highway type rear gear, but still manageable to launch around town.
Both have their place, depending on what you want to do with the car. There are also aftermarket gears offered to help you better match what you are trying to accomplish.
Wide Ratio typically have a 2.52 low gear, and WIDER spreads between your shifts 1-2-3-4. For street driving especially, the wide ratio provides a lower overall gear ratio (given same rearend) than the close ratio, so is a bit easier to launch and take off. One of the trade-offs is larger rpm drops between each gear as you shift. For racing one might not want that. The nice part of the wide ratio is you can get away with a more friendly highway type rear gear, but still manageable to launch around town.
Both have their place, depending on what you want to do with the car. There are also aftermarket gears offered to help you better match what you are trying to accomplish.
Pro
Joined: May 2016
Posts: 708
Likes: 150
From: Minnesota
If 1980, then yes it should be BW. No expert, but believe that would be a Super T-10 4spd, aluminum case from the factory, and actually has an even lower 3.42 low gear. Not known (allegedly) to be the most rugged 4 speed from the factory (but neither are stock Muncie's if you start putting on sticky tires).
Thread Starter
Intermediate
Joined: Jul 2012
Posts: 38
Likes: 0
If 1980, then yes it should be BW. No expert, but believe that would be a Super T-10 4spd, aluminum case from the factory, and actually has an even lower 3.42 low gear. Not known (allegedly) to be the most rugged 4 speed from the factory (but neither are stock Muncie's if you start putting on sticky tires).
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Burning Brakes
Joined: Oct 2012
Posts: 1,152
Likes: 252
Burning Brakes
Joined: Oct 2012
Posts: 1,152
Likes: 252
Depends on what you want to do with that 650 hp.
If the 650 hp is just for show and cruising around with the occasional burnout on crappy street tires then even the lowly Saginaw would suffice.
If the 650 hp will be used to dump the clutch at high revs using sticky tires every weekend at the 1/4 mile track then you need to look at contemporary 5 and 6 $peed offerings from Tremec and others.
A stock Muncie is pretty strong and will handle most anything in between.
Thread Starter
Intermediate
Joined: Jul 2012
Posts: 38
Likes: 0
If 1980, then yes it should be BW. No expert, but believe that would be a Super T-10 4spd, aluminum case from the factory, and actually has an even lower 3.42 low gear. Not known (allegedly) to be the most rugged 4 speed from the factory (but neither are stock Muncie's if you start putting on sticky tires).
Depends on what you want to do with that 650 hp.
If the 650 hp is just for show and cruising around with the occasional burnout on crappy street tires then even the lowly Saginaw would suffice.
If the 650 hp will be used to dump the clutch at high revs using sticky tires every weekend at the 1/4 mile track then you need to look at contemporary 5 and 6 $peed offerings from Tremec and others.
A stock Muncie is pretty strong and will handle most anything in between.
If the 650 hp is just for show and cruising around with the occasional burnout on crappy street tires then even the lowly Saginaw would suffice.
If the 650 hp will be used to dump the clutch at high revs using sticky tires every weekend at the 1/4 mile track then you need to look at contemporary 5 and 6 $peed offerings from Tremec and others.
A stock Muncie is pretty strong and will handle most anything in between.
Burning Brakes
Joined: Oct 2012
Posts: 1,152
Likes: 252
The Muncie and the BW T-10 are related and share a lot of design features. The BW is also a strong trans like the Muncie but internet lore says the Muncie is a tick stronger.
There are a lot of websites and forums that discuss the perceived strength differences between a Muncie and a BW T-10, make sure to spend some time with your favorite browser to decide yourself.
Thread Starter
Intermediate
Joined: Jul 2012
Posts: 38
Likes: 0
The Muncie and the BW T-10 are related and share a lot of design features. The BW is also a strong trans like the Muncie but internet lore says the Muncie is a tick stronger.
There are a lot of websites and forums that discuss the perceived strength differences between a Muncie and a BW T-10, make sure to spend some time with your favorite browser to decide yourself.
There are a lot of websites and forums that discuss the perceived strength differences between a Muncie and a BW T-10, make sure to spend some time with your favorite browser to decide yourself.
Instructor
Joined: Nov 2014
Posts: 129
Likes: 56
From: Tequesta FL
Senior Member
Joined: Jan 2008
Posts: 12,146
Likes: 2,038
From: Easton, PA
St. Jude Donor '10
Here is a BW ST-10 rebuilt and updated to mate with a new 383 stroker and 3.36 HD rear end. It also has a Hurst shifter installed. I look forward to years of fun with it. David
Last edited by AllC34Me; Oct 17, 2017 at 07:10 AM.
Drifting
Joined: Jun 2005
Posts: 1,950
Likes: 498
From: Chino Hills CA
I'm a T5 guy myself, have one in each of my two Chevy's, however, for those on a budget, I have had very good luck with the lowly 3 ring wide ratio Saginaw, has a 3.50 first gear, done many a happy burnout in by old Chevy Van, just can't speedshift with a 4 on the tree.