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#1 |
VIP Member
Join Date: Dec 2001
Location: Richmond Hill, Georgia
Posts: 2,003
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I'ts been a long time since I've had any options at all relating to transmission ratios. Back in the late 70's we had the first ever lower gear planetary set for a 727 torqueflite. In our B/SA Hemi Challenger. At the time we didn't see any difference. Didn't change anything else just the planetary gear.
Now I have an oportunity to get a lower first gear 2.84 (now 2.69) second gear is close to the same as I'm running now 1.57 (now 1.55) third is 1 to 1 on both but the lower gear tranny has an overdrive 4th gear 0.88. Both are automatics. The final drive ratio on the 4 speed is 4.10 to 1 (now 3.72 to 1) I figure I can run a taller tire with the 4 speed. This science is completely new to me. What is the general thought here? I'm running a basicilly low torque motor 151 cu inches in a fairly heavy car 2600#
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Art Leong 2095 SS Last edited by art leong; 11-16-2008 at 08:00 PM. |
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#2 |
Junior Member
Join Date: May 2005
Location: Captiol District of New York
Posts: 71
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Art, You have a PM
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BF/S 1985 Grand Am 3.0 V6 |
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