Author Topic: 6 INCH LIFT 38 INCH TIRES  (Read 50757 times)

Offline TOMMYCROW44

  • Newbie
  • Posts: 17
  • 77 K10
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #15 on: January 08, 2013, 10:25:49 am »
The lift went on in about 4 hours and the 38's fit great, I thought for sure I would have some trimming to do but to my surprise the tires clear both ways at full locks. So around corners I went and up some inclines and still no rub. I'm sure the springs will settle after time so I'll cross that bridge when I come to it. I thank you for the mudflap update, those are going on this weekend. the steering got a little looser that it was, anyone have a fix for that? Still trying to figure out the pics. :-\
SITTIN' HIGH

Offline TOMMYCROW44

  • Newbie
  • Posts: 17
  • 77 K10
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #16 on: January 08, 2013, 10:33:54 am »
Here's those pics finally ;D I'm 5'9 so the truck sits pretty high!
« Last Edit: January 08, 2013, 10:35:44 am by TOMMYCROW44 »
SITTIN' HIGH

Offline ehjorten

  • Senior Member
  • ****
  • Posts: 1238
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #17 on: January 08, 2013, 02:02:22 pm »
I see a cracked frame at your steering box in the future.  Best put on a bolt-in brace soon.  I guess it depends on what you use your truck for.  My 1-ton frame cracked at the box and I had to grind and weld it up, then I also put on the bolt-on steering brace.  I have had no issues so far.  I also have cross-over steering.

I have 8" of lift and I think I would rub 38's pretty good, but then it comes down to how you use your truck.

The steering might just be geometry issues.  You may have a little bit of bump-steer now.  The bigger tires are also going to be harder on your wheel bearings and steering joints, so be prepared to replace that stuff at some point and keep an eye on it.  Also...make sure you check the torque on all of that suspension stuff periodically while it is new.  The last thing you want is something coming loose or heaven forbid...coming apart!
-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline mehunter1

  • Newbie
  • Posts: 44
  • Newbie
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #18 on: January 08, 2013, 02:08:18 pm »
Looks good...so did you go full spring or blocks in the rear? 

Offline TOMMYCROW44

  • Newbie
  • Posts: 17
  • 77 K10
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #19 on: January 08, 2013, 04:42:39 pm »
I have ordered the steering brace already, and will bring it back in the shop every couple weeks to torque things down, good call on all that! The wheel bearings and ball joints seem tight now but I have already started budgeting for that issue. i don't hard mud in the truck especially with these half ton axles. and it's add a leaf and 4 inch block in the rear.
SITTIN' HIGH

Offline 81_Chevy

  • Frequent Member
  • **
  • Posts: 449
  • A Truck Is Built, Not Bought
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #20 on: January 08, 2013, 06:02:25 pm »
you might want to look into getting extended brake lines, the way you did it isnt really the safest way. in my opinion
81 Chevy K20 350 4" Rough Country lift ridin on 35's ; 2 12 inch Subwoofers w/ a custom interior

Eagle Scout - 2012 Proud to be one!

Offline TOMMYCROW44

  • Newbie
  • Posts: 17
  • 77 K10
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #21 on: January 09, 2013, 09:57:19 am »
you might want to look into getting extended brake lines, the way you did it isnt really the safest way. in my opinion
I have bought some stock lines and am in the process of having them extended at a local hose place. BUT VERY TRUE NOT SAFE
« Last Edit: January 09, 2013, 01:41:51 pm by TOMMYCROW44 »
SITTIN' HIGH

Offline pholliday1

  • Junior Member
  • ***
  • Posts: 632
  • 1990 V3500 Crew Cab
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #22 on: January 10, 2013, 08:11:05 am »
*******retighten your u bolts every 1000 miles up to 5000 miles there are know canidates for stretching/loosening********** Nice job!
VETERAN AND LIFETIME NRA MEMBER. WHAT DO YOU STAND FOR?
1991 V3500 CREWCAB SRW 454TBI GMC
1991 v3500 crewcab SRW 454tbi 480le 6" lift
1990 V3500 crewcab Dana 60 FF 14b 5:38 ratio 40 inch 11" lift
1989 v3500 crewcab 454TBI 5" lift

Offline bluecrew

  • Newbie
  • Posts: 42
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #23 on: January 11, 2013, 06:02:55 pm »
I rocked 8" springs and 38.5 tsl's and I could still get the fenders to meet tires.  6" and 38's rubbed when I turned into a parking spot.  Your springs will settle.  Looks good.  Nice rig.

When it comes to brake lines, I've found a cheaper route.  I've used this on several of my previous trucks.

Copied from one of my posts from another forum:

Also, for anyone lifting a 73-87 or 73-91 square body, I have rediscovered some intel that helps in terms of extended brake line hoses. The stock hoses in the front are roughly 19" long. With 6" lift springs, the hoses will be too short. But, there's a trick to this.

If you buy stock hoses for a 94 K3500 Dually, the front hoses are roughly 6" longer and with all the same fittings. Costs about $20-25 each side. The rear one is actually shorter than a SRW one, so I would buy the rear hose off a SRW 94 K3500.
Lift companies sell them for more than double the price. Just a little trick I used on my previous build that worked perfectly for me.

NAPA part numbers:
UP38622 Left front hose SRW 22.5"
UP380519 Left front hose DRW 21"

UP38623 Right front hose SRW 22.5"
UP380518 Right front hose DRW 21"

UP38823 Rear hose DRW 21.375"
UP38624 Rear hose SRW 17.375"

Offline TOMMYCROW44

  • Newbie
  • Posts: 17
  • 77 K10
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #24 on: January 14, 2013, 04:18:18 pm »
Thanks for the insite on the brake hoses, that will save a few coins. I'm sure these springs will settle, at that time I will probley move down to a 36 or 37 inch tire cause the boggers I have now are NOISEY! I have been looking for something a little more street friendly.
SITTIN' HIGH

Offline pholliday1

  • Junior Member
  • ***
  • Posts: 632
  • 1990 V3500 Crew Cab
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #25 on: January 14, 2013, 10:53:37 pm »
How many "inches" tall are your 38 inch tires? My forties run about 39" when new.
VETERAN AND LIFETIME NRA MEMBER. WHAT DO YOU STAND FOR?
1991 V3500 CREWCAB SRW 454TBI GMC
1991 v3500 crewcab SRW 454tbi 480le 6" lift
1990 V3500 crewcab Dana 60 FF 14b 5:38 ratio 40 inch 11" lift
1989 v3500 crewcab 454TBI 5" lift

Offline TOMMYCROW44

  • Newbie
  • Posts: 17
  • 77 K10
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #26 on: January 15, 2013, 10:58:32 am »
The tires are 37 inches tall inflated.
SITTIN' HIGH

Offline TOMMYCROW44

  • Newbie
  • Posts: 17
  • 77 K10
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #27 on: January 15, 2013, 12:51:21 pm »
I would be extremely surprised if your 6" lift is compatable with 38" tires.

Washington Mud-flap law is that the mudflap must cover the entire width of the tread and come down to the centerline of the axle (I'm in WA too).
Do you know any 4x4 tracks out here in washington that are still open?
SITTIN' HIGH

Offline frotosride

  • Senior Member
  • ****
  • Posts: 1428
    • WFO CONCEPTS
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #28 on: January 16, 2013, 09:27:32 pm »
I rocked 8" springs and 38.5 tsl's and I could still get the fenders to meet tires.  6" and 38's rubbed when I turned into a parking spot.  Your springs will settle.  Looks good.  Nice rig.

When it comes to brake lines, I've found a cheaper route.  I've used this on several of my previous trucks.

Copied from one of my posts from another forum:

Also, for anyone lifting a 73-87 or 73-91 square body, I have rediscovered some intel that helps in terms of extended brake line hoses. The stock hoses in the front are roughly 19" long. With 6" lift springs, the hoses will be too short. But, there's a trick to this.

If you buy stock hoses for a 94 K3500 Dually, the front hoses are roughly 6" longer and with all the same fittings. Costs about $20-25 each side. The rear one is actually shorter than a SRW one, so I would buy the rear hose off a SRW 94 K3500.
Lift companies sell them for more than double the price. Just a little trick I used on my previous build that worked perfectly for me.

NAPA part numbers:
UP38622 Left front hose SRW 22.5"
UP380519 Left front hose DRW 21"

UP38623 Right front hose SRW 22.5"
UP380518 Right front hose DRW 21"

UP38823 Rear hose DRW 21.375"
UP38624 Rear hose SRW 17.375"

Blue...thanks for the info..will definately use this once its lift time ie,$$$$  Tommy...High steer/crossover kit is highly recommended. I didn't se one here (chris correct me if I'm wrong) but check out www.ord.com They have a lot that will help the horrible factory geometry.
"Beat it like a red-headed ford"
1987 v10 Silverado(LQ4), 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline pholliday1

  • Junior Member
  • ***
  • Posts: 632
  • 1990 V3500 Crew Cab
Re: 6 INCH LIFT 38 INCH TIRES
« Reply #29 on: January 17, 2013, 08:32:08 am »
X2 on cross over steering. It turns your truck into a turning champ.
VETERAN AND LIFETIME NRA MEMBER. WHAT DO YOU STAND FOR?
1991 V3500 CREWCAB SRW 454TBI GMC
1991 v3500 crewcab SRW 454tbi 480le 6" lift
1990 V3500 crewcab Dana 60 FF 14b 5:38 ratio 40 inch 11" lift
1989 v3500 crewcab 454TBI 5" lift