89 Suburban DD Build (finally a 3/4ton)

[82355]

Part #348 is for 12 bolt to 14bff.
Part #447 is for 10 bolt to 14bff.

Martin

 

[eclipse85k10]

Thanks appreciate it then I got the 447 so I'm good. I found the part number on an old thread which had an agreement about which one.

 

[imiceman44]

i haven't gottan the old u joint out yet, need to take the driveline to my dads shop to use his torch. Does anyone know the napa part number for the conversion joint I need? I picked up a PN 447 but not completely sure its the right one.

No torch.
Just a propane torch.
Enough to melt plastic but not ruin the yoke.

 

[livid4dirt]

Torch work just fine.

 

[eclipse85k10]

Guess what showed up today

Thanks to Larry for sharing with me the wheels he has so I could copy him

 

[livid4dirt]

Looks great!

 

[y5mgisi]

Oh that is sexay!!

 

[y5mgisi]

What size are the tires?

 

[eclipse85k10]

285/75r16s
Cooper discovery ATP

First road test today. Think I'll take it to work tomorrow

 

[noJeepshere]

Good looking ride you got there.

 

[eclipse85k10]

Thanks. The tires and lift came out exactly as I wanted. Bigger but but not too big so it would still maintain functionality for DD and for hauling my kids. I hope to some day fix the rear quarter from the accident.

 

[Big Ray]

your 285's are just a rch smaller than a 33-12.5r16



Here's a calculator to play with. click

285/75-16 vs 33/12.5-16






33/12.5-15 Tires

Speedometer Difference


Speedo Reading

Actual Speed
20 mph (32.19 km/h) 20.12 mph (32.38 km/h)

25 mph (40.23 km/h) 25.15 mph (40.47 km/h)

30 mph (48.28 km/h) 30.18 mph (48.57 km/h)

35 mph (56.33 km/h) 35.21 mph (56.66 km/h)

40 mph (64.37 km/h) 40.24 mph (64.76 km/h)

45 mph (72.42 km/h) 45.27 mph (72.85 km/h)

50 mph (80.47 km/h) 50.3 mph (80.95 km/h)

55 mph (88.51 km/h) 55.33 mph (89.04 km/h)

60 mph (96.56 km/h) 60.36 mph (97.14 km/h)

65 mph (104.61 km/h) 65.39 mph (105.23 km/h)

 

[eclipse85k10]

Thanks 0.6% smaller I can handle that. They told me their were close to a 33. I wasn't looking for too big and I hope the 11.22 wide is good in the winter vs a 12.50.

Haven't hit the freeway yet but around town my speed is only 2 mile slower than my GPS speedo app.

 

[eclipse85k10]

Got home today and saw I was dripping coolant.. found a hole in my radiator. Ugh was planning on replacing it later but it wants to be replaced now! Been enjoying driving it. Guess not tomorrow

 

[y5mgisi]

Lame. Radiators these days are either affordable and crappy or expensive and decent.

 

[campfire]

Lame. Radiators these days are either affordable and crappy or expensive and decent.

Not just radiators...That statement sums up a lot of things.

 

[y5mgisi]

Yea fraid so.

 

[eclipse85k10]

I kinda of want to upgrade the size like larry did. Can't remember if he used a BB or diesel radiator. It's always run on the warm side

I should still have the brackets and shroud for a diesel radiator from a 84 c20 I parted out

 

[Big Ray]

Larry used a diesel radiator...from post 310 in his build thread.

"Spectra Premium CU774 4 core radiator"

 

[campfire]

Larry used a diesel radiator...from post 310 in his build thread.

"Spectra Premium CU774 4 core radiator"

It's worth noting that it took several tries for him to receive one that wasn't damaged or ruined in shipping. Not sure whether he'd recommend using one after going through that headache.