5.3 needs more torque
03-02-2007, 12:48 AM
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5.3 needs more torque
Hey guys I'm trying to get ready for this summer and pulling my RV and was wondering what can I do to help pull better. I've already got a W4M tune, exhuast, and intake. I also am running 33's with 3.73's. I'm really not wanting to change gears. I was thinking about going electric fans and also a cam. Would this get me what I'm wanting?
03-02-2007, 01:21 AM
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No it would not. With 33" tires you really need 4.10 gears. No amount of cam or fans or CAI or whatever other piddly stuff is going to make any noticeable difference. I did a cam and a few other do-dads with my Avalanche but other than the Radix, changing from 3.73's to 4.10's was easily the best off-the-line & pulling & towing performance move I made. Night and day difference. An added bonus was an increase in towing capacity.
03-02-2007, 02:43 AM
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I agree. With a 33" tire, you could go 4.30, instead of 4.10 for just a tiny bit more go. Doesn't sound like much of a difference but, when I went from a 265/70-16 tire to a 255/70-16 tire, it was a noticable difference. Or you could just jump on the bandwagon and do a 6.0. 
03-02-2007, 09:45 AM
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Originally Posted by onefastz71
...I'm really not wanting to change gears.
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03-02-2007, 12:15 PM
#8
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Bottom line, if you knew you were going to tow and have 33" tires you never should have bought a truck with 3.73 gears. The only way to make up for it at this point is to swap gears.
Even a Radix (expensive and the next best thing for low-end grunt) isn't going to fully solve your issues. With my Avalanche I bolted on the Radix and that still did not overcome the limitations of 3.73 gears, and this was with 32" tires. I had to swap to 4.10's.
As has already been suggested, you may want to even consider 4.56's.
Even a Radix (expensive and the next best thing for low-end grunt) isn't going to fully solve your issues. With my Avalanche I bolted on the Radix and that still did not overcome the limitations of 3.73 gears, and this was with 32" tires. I had to swap to 4.10's.
As has already been suggested, you may want to even consider 4.56's.
