5-speed or 6-speed
Team Owner
Joined: Feb 2003
Posts: 30,183
Likes: 313
From: Lake Norman NC
Re: 5-speed or 6-speed (Guru_4_hire)
I guess I am the freak for wanting to stick with the 4-spd?
Race Director
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
Re: 5-speed or 6-speed (LT1driver)
Isn't the 3.27 first gear a bit to steep, especially with something like a big block???????
Instructor
Joined: May 2003
Posts: 134
Likes: 0
From: Edwards CA
Re: 5-speed or 6-speed (GDaina)
GDaina - I also have a 3.55 gear with LT1 engine. I was thinking of the tremec with 3.27 1st and 0.68 5th instead of rebuilding the 4speed. How is that working with your gearing?
Race Director
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
Re: 5-speed or 6-speed (SAC)
SAC, you just have to shift a little sooner, not a problem...what the 3.27 and the 3.55 equates to....5.13's till you hit 1.1 ratio. Again, no different than running higher tranny ratios, just have to shift sooner...I love the gearing.
Le Mans Master
Joined: Sep 2002
Posts: 9,386
Likes: 0
From: 30 mins north of Charlotte NC
Re: 5-speed or 6-speed (GDaina)
which would be the best box for a high HP/TQ BB 540hp/600tqcar,,,,,,,,,,,,would either one of them really even hold up in the long run? keep in mind this is a weekend street car not a drag car, but will still be driven hard?
Melting Slicks
Joined: Apr 2000
Posts: 3,286
Likes: 8
From: San Jose California
Re: 5-speed or 6-speed (Pacin'California)
Pacin really said it very well for me. The ROD 6 speed was the best modification I made to the car. Period! the ROD is a closer gear box than the 6 speed ZO6. The ROD has a fairly big rpm change from 1st to 2nd, but it is only about 25mph difference using a 6500 rpm shift point. The ZO6 really needs a closer ratio between 3rd and 4th, not between 1st and 2nd.
The ROD 5 is a bit easier to install than the 6 because the 6 is a bit longer. But if you fabricate a removable crossmember, installing either one becomes a piece of cake. Once adjusted, I absolutely love the feel of the ROD Longs shifter.
ROD6: 48, 75, 102, 130, 160, 195mph @ 6500 w/ 3.08's
3.27, 2.13, 1.57, 1.23, 1.00, 0.82
ZO6: 48, 69, 100, 143, 171, 255mph @ 6500 w/ 3.42's
2.97, 2.07, 1.43, 1.00, 0.84, 0.56
Chuck
[Modified by Chuck Harmon, 12:20 PM 12/7/2003]
The ROD 5 is a bit easier to install than the 6 because the 6 is a bit longer. But if you fabricate a removable crossmember, installing either one becomes a piece of cake. Once adjusted, I absolutely love the feel of the ROD Longs shifter.
ROD6: 48, 75, 102, 130, 160, 195mph @ 6500 w/ 3.08's
3.27, 2.13, 1.57, 1.23, 1.00, 0.82
ZO6: 48, 69, 100, 143, 171, 255mph @ 6500 w/ 3.42's
2.97, 2.07, 1.43, 1.00, 0.84, 0.56
Chuck
[Modified by Chuck Harmon, 12:20 PM 12/7/2003]
Melting Slicks
Joined: Jul 2002
Posts: 3,000
Likes: 22
From: Boulder Creek California
Re: 5-speed or 6-speed (Chuck Harmon)
I've been looking lately, and seeing t56s for $450-700 used, in need of partial or total rebuilds... How hard is it to rebuild one of these compared to a Muncie 4-speed? Also comment on Tremec 5-speeds, there's a T5 on EBay right now for $80 no bids! (3 days left)
I'm no so much worried about "difficulty", more about specialty tools, or anything I won't be able to do myself.
I'm no so much worried about "difficulty", more about specialty tools, or anything I won't be able to do myself.
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Le Mans Master
Joined: Oct 2000
Posts: 6,563
Likes: 2
Re: 5-speed or 6-speed (Chuck Harmon)
Pacin really said it very well for me. The ROD 6 speed was the best modification I made to the car. Period! the ROD is a closer gear box than the 6 speed ZO6. The ROD has a fairly big rpm change from 1st to 2nd, but it is only about 25mph difference using a 6500 rpm shift point. The ZO6 really needs a closer ratio between 3rd and 4th, not between 1st and 2nd.
The ROD 5 is a bit easier to install than the 6 because the 6 is a bit longer. But if you fabricate a removable crossmember, installing either one becomes a piece of cake. Once adjusted, I absolutely love the feel of the ROD Longs shifter.
ROD6: 48, 75, 102, 130, 160, 195mph @ 6500 w/ 3.08's
3.27, 2.13, 1.57, 1.23, 1.00, 0.82
ZO6: 48, 69, 100, 143, 171, 255mph @ 6500 w/ 3.42's
2.97, 2.07, 1.43, 1.00, 0.84, 0.56
Chuck
[Modified by Chuck Harmon, 12:20 PM 12/7/2003]
The ROD 5 is a bit easier to install than the 6 because the 6 is a bit longer. But if you fabricate a removable crossmember, installing either one becomes a piece of cake. Once adjusted, I absolutely love the feel of the ROD Longs shifter.
ROD6: 48, 75, 102, 130, 160, 195mph @ 6500 w/ 3.08's
3.27, 2.13, 1.57, 1.23, 1.00, 0.82
ZO6: 48, 69, 100, 143, 171, 255mph @ 6500 w/ 3.42's
2.97, 2.07, 1.43, 1.00, 0.84, 0.56
Chuck
[Modified by Chuck Harmon, 12:20 PM 12/7/2003]
The T-56 requires floor cuttingand many other mods. The ROD has the same input shaft, same pilot, same bellhousing, same length and same driveshaft as the Muncie or T-10.
:yesnod: :chevy :chevy :yesnod:
Racer
Joined: Jun 2002
Posts: 254
Likes: 0
From: Lonoke Arkansas
Re: 5-speed or 6-speed (69 N.O.X. RATT)
I have a Richmond 6 spd in mine. I run a 3.70 rear with the 2.77 first, my car makes 491-500 rwhp (through full exhaust) dyno proven and goes 125 mph in the 1 /4. I can tell you the 2.77 and 3.70 was perfect. The entire idea of the extra gears is being able to run closer ratios (1st through 5th), in less powerful motors it is even more of a benefit. I prefer the 2.77 first and deeper gear (3.70) over the 3.27 and 3.08 because in the higher gears there is a more dramatic rpm drop between gears.
Look at the RPM drop on the 1st to 2nd shift of the TKO.
