Tranny dilemma~!
#1080133
09/22/11 12:40 AM
09/22/11 12:40 AM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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OP
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Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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Ok, I am in the process of building a 4 speed tranny for my 68 Charger. I was able to find 3 extra 4 speeds, 2 A-body and 1 B-bodies. I now have 2 each 2.66, 1 each 2.45, and a 3.09 OD gear sets. It was suggested that I want the early A-body 3.09 gear set for my application. I am running an extremely mild 572 StageV Hemi and 3.55 gears and I don't have tires yet . So from the experience of the Moparts tribe, what should I do? Should I try and trade a gearset? Or do I want to run what I now have? If run what I have, which set and why? Thanks Tim
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Re: Tranny dilemma~!
[Re: astjp2]
#1080134
09/22/11 02:52 AM
09/22/11 02:52 AM
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Joined: Jul 2010
Posts: 3,502 SOUTH JERSEY
HEMIFRED
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Joined: Jul 2010
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SOUTH JERSEY
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I believe the 3.09 is a 6 cylinder gear and not that strong. plusw qa big drop to second. You have enough torque to sdtsay with a 2.45 or 2.46 there's little difference but a 4.10 gear would be the tickedt
home of the Sox and Martin Hemi Duster
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Re: Tranny dilemma~!
[Re: astjp2]
#1080136
09/22/11 06:33 AM
09/22/11 06:33 AM
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Joined: Dec 2009
Posts: 20,679 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,679
in a cattle trailer down by th...
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The 2.45 or 2.66 1st gear will be fine for you. Big cubes, lots of torque down low. The 3.09 was a 6 cylinder trans only to get that little thing moving. I don't think it was any weaker than the others per se but you won't need that steep of a 1st, plus as Fred said, there is a bigger spread between 1st and 2nd.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion. 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Tranny dilemma~!
[Re: astjp2]
#1080137
09/22/11 05:16 PM
09/22/11 05:16 PM
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Joined: Jan 2003
Posts: 26,005 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
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Posts: 26,005
Rio Linda, CA
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I'm a big fan of the 3.09 low gear for the street, I use 3.23 gears and get the same launch as 2.66 with 3.91's.
Sure there's a big drop between 1-2 but torque covers that.
The INTERNET, the MISinformation superhighway
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Re: Tranny dilemma~!
[Re: astjp2]
#1080138
09/22/11 06:03 PM
09/22/11 06:03 PM
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Joined: Jan 2003
Posts: 8,681 Buford, GA
I_bleed_MOPAR
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Buford, GA
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3.55 gears? 8 3/4? I hope you don't plan on getting too crazy with the clutch and loud pedal. Tim
'71 Charger 383/727 '17 Challenger SXT (Wifeys car )
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Re: Tranny dilemma~!
[Re: astjp2]
#1080146
09/25/11 04:36 PM
09/25/11 04:36 PM
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Joined: Jan 2003
Posts: 75,098 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,098
A Banana Republic near you.
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Quote:
Can you convert a 307 bearing case to a 308 bearing? TIm
Requires machining and maybe some welding because the 308 bore will hit the bolt holes .
Why do you want to switch to the larger bearing ?
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Re: Tranny dilemma~!
[Re: Guitar Jones]
#1080149
09/25/11 07:04 PM
09/25/11 07:04 PM
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Joined: Jan 2003
Posts: 5,448 So Cal
Sinitro
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So Cal
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Quote:
The 2.45 or 2.66 1st gear will be fine for you. Big cubes, lots of torque down low. The 3.09 was a 6 cylinder trans only to get that little thing moving. I don't think it was any weaker than the others per se but you won't need that steep of a 1st, plus as Fred said, there is a bigger spread between 1st and 2nd.
The 3.09 1st gear was also used for some of the 318 cars..
Just my $0.02...
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