3.73s or 4.11s?
Swapping parts from my old truck to the current one...
One of the items is the 3.73 posi rear, then the engine and transmission. (LQ4/4L80E) My truck is a 2WD RCSB. I tow a 1500lb open trailer with vehicles ranging between 3300-4200 lbs several times a year. The 4L80E is stock with approx 50K miles on it. The engine is an 04' LQ4 with approx. 60K miles. It has a TPiS ZL10 cam, 1.75" LTs with cats. The exhaust is dual 2.5" into a Magnaflow muffler with a single 3.5" exit. Also has efans and a ported TB. I have 31" tall tires, from what I am seeing - the 4L80E is meant to tow in OD. Given the weight I tow, size of the truck, and figure between 50-60 mph speeds... what ratio will be better for me? I am wondering if it is worth seeing that I tow with the truck only about 6-8 times per year. Mostly I daily drive it and use it to haul parts for projects. I found a great deal on a set of 4.11s, and with the rear out of the donor truck - now would be the time to do it vs. laying under the truck at a later date. I just need to make sure that the gear set is compatible with the abs, etc. I've come to realize that not all aftermarket gear sets are created equal. |
when towing with a gas motor anytime you can run gear run it....i have 35s and i run 488s
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Did more investigation, the gear set wasn't compatible with abs for some reason. I have my stock rear out of my old truck sold for a good price. I am now looking at buying a complete kit: posi, gears, etc. I am tossing around 4.10/4.11, 4.30, or 4.56 ratios. I just need to decide what I want. :bang:
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I miss the factory 4.10 rear in my old Silverado and that was bone stock. I wish I wouldve swapped to 4.10s in my truck now but I went with the "if ain't broke don't fix it" route.
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Originally Posted by 86 IROC
(Post 5306111)
Did more investigation, the gear set wasn't compatible with abs for some reason. I have my stock rear out of my old truck sold for a good price. I am now looking at buying a complete kit: posi, gears, etc. I am tossing around 4.10/4.11, 4.30, or 4.56 ratios. I just need to decide what I want. :bang:
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2010 Silverado 2WD Auto 4.3 to 6.0 swap
2010 Silverado 2WD Auto 4.3 to 6.0 swap. What would be the differences in doing this year swap? I just picked up the truck and it needs a transmission so I got it fairly cheap and want to do the 6.0 swap. Thanks for any help you could give me. I have a complete LY6 engine from a 2008 express van and was wondering if I could use this engine?
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In middle of this swap. Are the mounting brackets off a 2500hd the same as the 1500? They look like they will work and from what I can tell both have the same part number on actual mounts. Thanks in advance. Both 2006s
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Engine mounts are the same.... so yes it will work
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