My 1999 OBS C1500 LQ9 6.0 LS Swap

[Skylark]

What's the main culprit to change in the 4l60 to make it hold up to a 6.0? I have a 1999 ecsb with 4.8 I want to swap in a 6.0. I do NOT run it hard or squeal tires or anything. Its our family vehicle. We tow our boat with it and its just underpowered towing it. Even with no load it has to drop down a gear to climb hills when cruising. So I want to swap in a 6.0 and keep the 4l60.

In your situation you might just be happier with simple gear swap.

[mopower440]

na, its got some miles on it so just wanna do a motor change. Its got 3.73 gears now..

[Chevydillan]

^^^ I bet the 60 would be just fine in that situation but a trans go HD-2, sun shell and 5 pinion planetary would for sure do it. Oh and of course a good cooler.

[mopower440]

^^^ I bet the 60 would be just fine in that situation but a trans go HD-2, sun shell and 5 pinion planetary would for sure do it. Oh and of course a good cooler.

cool! what is a trans-go hd2 and what sun shell do i use, one from a 4l65e or?

[Chevydillan]

Look up beast sun shell on eBay and the trans go is a shift
Kit.

[mopower440]

Look up beast sun shell on eBay and the trans go is a shift
Kit.

I saw that beast sunshell. Will that sunshell change anything or is it just a strong version of the stock sunshell? I dont wanna change the way the trans acts or anything, just make it a little tougher and i was told the stock sunshell is weak..what about this one
http://www.ebay.com/itm/Sonnax-SMART...29ef0b&vxp=mtr
Its supposed to be tougher than the beast AND addresses the planetary problem also..

[Chevydillan]

That looks good and sonnax is quality stuff. The hard parts don't change anything but strength.
You should probably start a new thread so we don't jack this one any longer and you may get more/better responses.