Ordering New Transmission, but What Gears ? - Page 2

Run to Rund · 03-31-2014, 09:55 AM

Scott at Jerico talked me into 3.08 first (1.93, 1.34, 1.00) and said it could be changed to about 3.19 later if needed. His argument was that I would have no time in first with 3.19. I have found with the right clutch slippage, I am OK, but still wonder if 3.19 would be better. If I do decide to change, I will discuss gear strengths with Scott.
I also have a torque type engine that I don't want to over-rev and gear the diff for the top end, then take what I can get in terms of first gear.

Adger Smith · 03-31-2014, 10:35 AM

Aubrey,
I think the 3.19 is too steep a gear for you combination. It will have too much 1-2 drop and with the 5.13 rear gear you have you will never hook it. IF I tried it I would use 4.88's in the rear. I think you have the shift point just about right. You might want to pull it 200 early in low to second with all that new gear ratio. then string it out in 2-3 & 3-4.
One thing about it is all the thinking and planning needs to be verified by testing.
Do Not shove what you want at the car.
Let the car tell you what it wants.

03-31-2014, 09:55 AM	#1
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 584 Likes: 9 Liked 54 Times in 27 Posts	Re: Ordering New Transmission, but What Gears ? Scott at Jerico talked me into 3.08 first (1.93, 1.34, 1.00) and said it could be changed to about 3.19 later if needed. His argument was that I would have no time in first with 3.19. I have found with the right clutch slippage, I am OK, but still wonder if 3.19 would be better. If I do decide to change, I will discuss gear strengths with Scott. I also have a torque type engine that I don't want to over-rev and gear the diff for the top end, then take what I can get in terms of first gear.

03-31-2014, 10:35 AM	#2
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Ordering New Transmission, but What Gears ? Aubrey, I think the 3.19 is too steep a gear for you combination. It will have too much 1-2 drop and with the 5.13 rear gear you have you will never hook it. IF I tried it I would use 4.88's in the rear. I think you have the shift point just about right. You might want to pull it 200 early in low to second with all that new gear ratio. then string it out in 2-3 & 3-4. One thing about it is all the thinking and planning needs to be verified by testing. Do Not shove what you want at the car. Let the car tell you what it wants. __________________ Adger Smith (Former SS)

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