2863 spring (1 Viewer)

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Can factory torsion bars be adjusted to accommodate 2863 springs in the rear. I’m contemplating moving up to them from 2866 with about 250 lbs in the rear. Goal is to make 295/70r18’s happen. Mall cruising mostly
 
Can factory torsion bars be adjusted to accommodate 2863 springs in the rear. I’m contemplating moving up to them from 2866 with about 250 lbs in the rear. Goal is to make 295/70r18’s happen. Mall cruising mostly
The disclaimer is crucial, thank you.
 
Yes. The 863s are the same length as OEM coils, but just have a higher spring rate for heavier loads.
 
you can reindex your factory tbars to get enough lift.

Also, lift makes zero difference on what size tires will clear. All you are doing is changing your spring rates and adjust the neutral position. Your tires will all travel on the same paths.

I don't know that 250lbs in the rear is enough to justify 863's
 
Can factory torsion bars be adjusted to accommodate 2863 springs in the rear. I’m contemplating moving up to them from 2866 with about 250 lbs in the rear. Goal is to make 295/70r18’s happen. Mall cruising mostly

IDK the actual stock spring measurements, but I do know that 2863 will increase the rear ride heigh over stock by about 3" with no aftermarket bumper & tire carrier. If you dont have a lot of extra weight in the back- its prob too much spring. If you're just trying build some clearance for taller tires ( I dont think you'll have issues with 298/70-18 in back), why not install the tires first then figure out what you need to compensate if there are any clearance issues. Some 10-20mm spacers might do the job.

FWIW I had Ironman TOY13B performance spring before adding all the armor on my truck- this was a good all-round spring 0-400lbs added weight- a tad taller but lower spring rate than 863 so it will settle a little lower than 863.
 
IDK the actual stock spring measurements
Toyota OEM non-AHC spring heights:
Driver Side = 492mm
Pass Side = 486mm

OME spring heights:
1610484411265.png


He said he’s hauling 250 lbs (I assume constant load), so 863s fit the bill, given their 250 spring rate.
 
Toyota OEM non-AHC spring heights:
Driver Side = 492mm
Pass Side = 486mm

OME spring heights:
View attachment 2551427

He said he’s hauling 250 lbs (I assume constant load), so 863s fit the bill, given their 250 spring rate.
Closer to 200 actually.
 
then get the 860s instead...your first post says 250 👇🏽
My bad it was cuz I double checked my math and wanted to clarify in case it mattered. Which it did per your clarification. Thanks a ton
 
Here is my old truck with 63's in the back. slee bumper, 295/75 spare and a hi lift. and as you can see it still has a good amount of lift.
I also have re-indexed factory torsion bars up front in this photo.

42480144835_c461a33ca5_k.jpg
 
Here is my old truck with 63's in the back. slee bumper, 295/75 spare and a hi lift. and as you can see it still has a good amount of lift.
I also have re-indexed factory torsion bars up front in this photo.

View attachment 2552067
That’s a lot of height even with that weight. Great to hear you were able to re-index factory tb’s. I don’t have a front bumper
 

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