G20 van wheel change
December 23rd, 2010, 8:19 PM
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G20 van wheel change
Hey all,
New dude here to this forum. I have a 95 van and want to mount a set of small 5 lug chevy wheels on. The rears I can use adapters, the front is my problem. Can I buy a hub/rotor with the 5 on 4.75 pattern that will be a direct replacement for the front? I'm hung up on my wheels and would love to use them. Thanks for any help and Merry Christmas to all!
New dude here to this forum. I have a 95 van and want to mount a set of small 5 lug chevy wheels on. The rears I can use adapters, the front is my problem. Can I buy a hub/rotor with the 5 on 4.75 pattern that will be a direct replacement for the front? I'm hung up on my wheels and would love to use them. Thanks for any help and Merry Christmas to all!
December 24th, 2010, 8:58 PM
#4
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the 1/2 tons all have the 5 lug set up. Above that the 3/4 and 1 tons went to 8 lugs.
And if you use aftermarket wheels the might have dual bolt space patterns. Only the large GM cars used 4.75 bolt pattern(technically only Chevy and Pontiac used this, but every division used this for the mid-size RWD cars-Monte Carlo, Cutlass, etc).
What is odd is that the 1/2 ton Suburban has a 5x5" bolt space pattern but the 1/2 van has 4.75" until like the 1996 changeover where they went to the 5x5" bolt spacing pattern(dont hold me to that though...I know a guy and I swear his conversion van looks like a 5x4.5").
But if I were you I d prefer to put on Suburban rotors with a 5x5" bolt spacing, but you already have the wheels you want to use.
Go to Autozone or Advances website and punch in a few numbers, change the year of the van like plus or minus 3 years and see if the part numbers are different and check specs. No matter what the rotor still mounts on the hub like they all do. You really just want to know if the rotor has a hat to it and what is the clearance from the disc to the spindle and will the caliper or mounts bind up or clash.
And if you use aftermarket wheels the might have dual bolt space patterns. Only the large GM cars used 4.75 bolt pattern(technically only Chevy and Pontiac used this, but every division used this for the mid-size RWD cars-Monte Carlo, Cutlass, etc).
What is odd is that the 1/2 ton Suburban has a 5x5" bolt space pattern but the 1/2 van has 4.75" until like the 1996 changeover where they went to the 5x5" bolt spacing pattern(dont hold me to that though...I know a guy and I swear his conversion van looks like a 5x4.5").
But if I were you I d prefer to put on Suburban rotors with a 5x5" bolt spacing, but you already have the wheels you want to use.
Go to Autozone or Advances website and punch in a few numbers, change the year of the van like plus or minus 3 years and see if the part numbers are different and check specs. No matter what the rotor still mounts on the hub like they all do. You really just want to know if the rotor has a hat to it and what is the clearance from the disc to the spindle and will the caliper or mounts bind up or clash.
March 11th, 2018, 11:23 AM
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Hello All Again. Updating my whoas with my G20 Van.
If you have ever driven a G-20 van you will understand the Squishy brakes when attempting a near panic stop. I decided to resolve this issue. I bought Wilwood calipers for the front. I also stepped up to drilled and slotted rotors, new ceramic pads, new shoes in rear and NTB was gracious enough to completely ruin one rear drum when I paid them to "clean them up" by turning the thick original drums. SO I bought a new pair of drums also. Now what I am experiencing is once you're on the road awhile and everything is all warmed up, when i apply the brakes they make this HORRIBLE thunderous vibration. Its not a typical brake squeal. It is a loud grinding growling sound with a feel like something is seriously out of round. I noticed the new calipers were rubbing slightly on the inside of my aluminum wheels so I fixed that by clearancing both with a scotchbrite disc. Now I contacted Wilwood tech support and they told me I had to temper the pads to the rotors by warming them up by driving normally, then at 35 mph apply firm pressure to the brake pedal. Doing this 3-5 times until I smelled hot pads. then to cool them down normally. I did what they suggested and I still have that growling demon somewhere. Any ideas? I'm just wondering if I have a bad drum or rotor new out of the box? Oh and all the front bearings were replaced at the same time with the best quality I could buy.
If you have ever driven a G-20 van you will understand the Squishy brakes when attempting a near panic stop. I decided to resolve this issue. I bought Wilwood calipers for the front. I also stepped up to drilled and slotted rotors, new ceramic pads, new shoes in rear and NTB was gracious enough to completely ruin one rear drum when I paid them to "clean them up" by turning the thick original drums. SO I bought a new pair of drums also. Now what I am experiencing is once you're on the road awhile and everything is all warmed up, when i apply the brakes they make this HORRIBLE thunderous vibration. Its not a typical brake squeal. It is a loud grinding growling sound with a feel like something is seriously out of round. I noticed the new calipers were rubbing slightly on the inside of my aluminum wheels so I fixed that by clearancing both with a scotchbrite disc. Now I contacted Wilwood tech support and they told me I had to temper the pads to the rotors by warming them up by driving normally, then at 35 mph apply firm pressure to the brake pedal. Doing this 3-5 times until I smelled hot pads. then to cool them down normally. I did what they suggested and I still have that growling demon somewhere. Any ideas? I'm just wondering if I have a bad drum or rotor new out of the box? Oh and all the front bearings were replaced at the same time with the best quality I could buy.
March 11th, 2018, 1:31 PM
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I always shake my head at someone who bumps an 8 year old thread, but considering you started it, you get a pass 
Can you tell if the noise is coming from the front or the back?
Can you tell if the noise is coming from the front or the back?
March 11th, 2018, 2:07 PM
#7
Reported.
You resurrected an 8 yr old topic, and posted something unrelated. Please learn some basic forum etiquette before posting again.
You resurrected an 8 yr old topic, and posted something unrelated. Please learn some basic forum etiquette before posting again.
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March 11th, 2018, 4:18 PM
#9
He asked for help troubleshooting his brakes. The topic title is "G20 van wheel change". He should definitely have started a new topic. It doesn't matter who started it. It's frowned upon in any forum.
We should try make information easy to find for members.
We should try make information easy to find for members.
Last edited by mountainmanjoe; March 11th, 2018 at 4:21 PM.
March 11th, 2018, 5:30 PM
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And reporting him does what? Chasing people away is frowned upon more than what he did. And I'd bet my comment got the message across without any hostility. I'd bet he never comes back. And who's to say it isn't wheel related?