Jump to content

Upgraded To 20" X 8.5" Rims, Quick Question

ChevroletTough

Recommended Posts

ChevroletTough Enthusiast

ChevroletTough

Posted
Posted

Hey guys, I just purchased some used 20" x 8.5" American Racin Rims (they are at least 10 years old). They do have some pitting and flaking, but nothing serious, and I'll only be running them in the summer. Anyway, I have some shots of them after I shined/buff/polished the hell out of them (took me 2 hours!). The tires on there are 285/50/R20 Hankook Venture ST tires, they probably have 1 summer left in them, if that. Anyway I'll be looking at getting new tires during winter for them (off season for the rims) I'm looking at some 285/60/R20 Nitto Terra Grapplers, I've read good things about them. I'm pretty new to this forum, but I'm a regular over at GMI.

 

Anyway, I'm looking at cranking my stock torsion bars up a bit. I've reserached it to death. I know how to measure them and where to crank them. I'm just wondering if anyone has any advice as to how many full revolutions I should go on the bolts... I was thinking 4 for starters and then measuring, has anyone had experience with this? I'm Pretty sure I'm going to have to crank them to fit the new rims.

 

I have a 2004 Silverado Z71 (stock height and stock keys).

 

Here are some pics of the new rims:

 

Thanks, Guys

 

37609_624383599952_185106871_36308395_1543772_n.jpg

 

 

 

37609_624383604942_185106871_36308396_1065802_n.jpg37609_624383609932_185106871_36308397_5340902_n.jpg

uh6tdrvr Enthusiast

uh6tdrvr

Posted
Posted

On a torsion bar crank it really depends on how the truck is set up. CV joint angle is going to be the biggest thing for you to watch for doing it. When you do turn, make sure you drive it around the block so that the suspension will settle into place and when your done, dont forget the alignment.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • TrueBlue
      Transmission Temperature Hitting 220s

      By TrueBlue · Posted

      Thanks, so being a different beast altogether, anyone know what the "optimal" temp is for the 10L80/90 for proper shifting?
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      How many years have I pointed out every point in that link to the folks here and been avalanched with criticisms and outright hostilities at times? I ran counter to even the great CUSTOMBOSS and Lake Speed Jr and the half dozen experts on YouTube and in the final.....GM, Physics (Stribeck) backs that Grumpy old Bear.    Honestly, I never said a thing engineering hadn't studied silly and laid in concrete during WWII. But I'm old, the information is old and yet, the Laws of Physics are eternal.    Okay there is one exception. I vehemently disagree with their use of the word 'tolerances' when what it meant is "clearance".   The clearance is the distance between two objects. The tolerance is the degree of acceptable variation permitted in that clearance. I.E., piston to bore clearance is 0.004" with a tolerance of +/- .0002" so the clearance is in specification if it lies between 0.0038" and 0.0042". Cutting that 'tolerance in half has ZERO impact on lubrication requirements. Makes for more difficulty in manufacturing.  But a tighter clearance 'MAY'. Depends on finish. Anyway....   It's one of those statements made by people to make themselves look smarter than they are to convince people who are as un-enlighten as they seem to manipulate their behaviors. But hey, the blind leading the blind puts them both in the pit. 
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      Out and about yesterday on a long Saturday drive I passed a lot of Shell stations. My preferred, so I pay attention. Lot's of small town Illinois so not six stations in three blocks like the city.    Everyone of them over a radius of say 100 miles had regular at $4.19 but one which was the one closest to home at $4.15. However Premium pricing varied greatly between 85 cents over regular to $1.50 over. I'm not counting the price of the station with the lowest regular so the reference is the same for the remainder and all within the same brand. However the spread discrepancy holds across all brands.     @txab, any thoughts on that? 
    • revrnd
      Future GMC Jimmy

      By revrnd · Posted

      What are your thoughts? The Chevy Blazer relaunch was an epic case of 'lunchbag letdown'. Jeep Wranglers and Ford Broncos stick out like a sore thumb.    The AI photos do not look like a 'retro version', but shrunken Tahoes. Get away from the 'futuristic look'. I've seen two concepts. One had rectangular headlight like a Rivian and the other way too big headlights (similar to a previous non-Wrangler SUV) should include dual round headlights like the early version.   If not this would look OK   At least it has GM styling (albeit the K2XX) A lot of the images floating around look like Bronco IIs or the current Bronco. Looking at the Broncos in my area (central Ontario, it seems to be a mix of 2 doors and 4 doors, 'mall rated' to ones that could go offroad.    I'm sure a AT4 and AT4X RPOs could be outfitted similar to a Rubicon if the braintrust understood the whole offroad scene. Crossing my fingers that if it does see the light that the front air dam/bumper doesn't extend below the center line of the tire...      
    • revrnd
      Silverado 4500-5500-6500 are they still being produced? Would have sold better as GMCs as well

      By revrnd · Posted

      I saw this news earlier this year:   https://theautowire.com/2026/06/12/gm-kills-off-chevys-biggest-silverado-trucks-as-sales-collapse-and-factory-fallout-spreads/

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...