4:10, 4.30, or 4.56
#1
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I can not decide on what gear to run in my 99 silverado.
I have a 6.0 lq4 (stock) with long tube headers backed by a GTO t56. My tires are 29 inches tall. They are 275 45's on 20's. I do spray a 125 shot on the 6 liter.
What gear do you think would be good.
The 4.56 would give me the same run out as the stock wheel and tire combo with a 5 speed.
I do alot of highway driving with a weekend tow of a chevelle and or boat.
What would you do?
I have a 6.0 lq4 (stock) with long tube headers backed by a GTO t56. My tires are 29 inches tall. They are 275 45's on 20's. I do spray a 125 shot on the 6 liter.
What gear do you think would be good.
The 4.56 would give me the same run out as the stock wheel and tire combo with a 5 speed.
I do alot of highway driving with a weekend tow of a chevelle and or boat.
What would you do?
#2
SPAM HUNTER
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1 / 2/ 3/ 4/ 5/ R
3.49/ 2.16/ 1.40/ 1.00/ 0.73/ 3.55
that is the 5 speed (nv3500) gearing
1 / 2 / 3 / 4 / 5 / 6
2.97:1 / 2.07:1 /1.43:1 /1.00:1 / 0.84:1 /0.57:1
that is the M12 t56 gearing
To be honest, i would to the 4.30's if not the 4.56's That way you have the torque when pulling the trailer.
3.49/ 2.16/ 1.40/ 1.00/ 0.73/ 3.55
that is the 5 speed (nv3500) gearing
1 / 2 / 3 / 4 / 5 / 6
2.97:1 / 2.07:1 /1.43:1 /1.00:1 / 0.84:1 /0.57:1
that is the M12 t56 gearing
To be honest, i would to the 4.30's if not the 4.56's That way you have the torque when pulling the trailer.
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#9
Where's the Beef?
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in the GM Drivetrain section there is a sticky at the top with an MPG calculator in it. Use it to see where you're rpms will fall with each. This will let you have a good idea of your shift points and speed alike so you can go with the one you want.
Edit: nevermind, it's only the auto's listed in that.
Edit: nevermind, it's only the auto's listed in that.
Last edited by viciousknid; 12-08-2009 at 02:28 PM.
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