anyone making 4.30 gears for our trucks?
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Senior Member
Joined: Nov 2006
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From: New Jersey
anyone making 4.30 gears for our trucks?
Does anyone know if 4.30 gears are available for a 2006 FX4?
I have a 3.73 LS in there now with 33's and I'm thinking down the road I would regear (ie after my 3yr-36k warranty runs out). I was looking at the power band chart and it looks like the best gear ratio for me would be 4.30 but I've never see anyone talk about that height. I also couldn't find anything in the search about it. It seems to go from 4.10 to 4.56.
So does anyone know? Thanks
I have a 3.73 LS in there now with 33's and I'm thinking down the road I would regear (ie after my 3yr-36k warranty runs out). I was looking at the power band chart and it looks like the best gear ratio for me would be 4.30 but I've never see anyone talk about that height. I also couldn't find anything in the search about it. It seems to go from 4.10 to 4.56.
So does anyone know? Thanks
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Senior Member
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From: New Jersey
Originally Posted by FATHERFORD
I have 4.11's with 29" tires... i would go 4.56 atleast in your case.
It looks like the 4.56 on 33s would be the equivalent of what your 4.10 on 29s.
http://www.intercotire.com/site63.php
Do you do alot of towing? I don't do any and I don't think I'd want to run over 3k rpms at 65mph.
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Originally Posted by RonF150
Do you do alot of towing? I don't do any and I don't think I'd want to run over 3k rpms at 65mph.
The table below can be used to get a rough idea on gear ratios. The colors represent ideal RPM's at highway speeds (65). For highway cruising and best fuel economy stay towards the yellow (2600 rpm), around town daily driving is color coded green (2800 rpm), and for better towing power or just more 4-low power use the ratios near the red (3100 rpm). These calculations are assuming a manual transmission with a 1:1 ratio. If you drive an automatic your RPMs will be higher, and the opposite is true if you have overdrive (your RPMs will be lower).
