G20 van wheel change - Chevrolet Forum - Chevy Enthusiasts Forums

Express & G-Series Vans Offered in both a full size van, or a large box truck, the Express is the modern GM workhorse

Chevrolet Express
Platform: GMT Van

G20 van wheel change

Reply

 
 
 
Old December 23rd, 2010, 8:19 PM
  #1  
CF Beginner
Thread Starter
 
Join Date: Dec 2010
Posts: 6
Question 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!
calook1967 is offline  
Reply With Quote
Old December 24th, 2010, 9:05 AM
  #2  
CF Veteran
 
RacerX's Avatar
 
Join Date: Aug 2010
Location: New York City USA
Posts: 1,054
Default

why not just replace the rotors?
RacerX is offline  
Reply With Quote
Old December 24th, 2010, 3:04 PM
  #3  
CF Beginner
Thread Starter
 
Join Date: Dec 2010
Posts: 6
Default Yes

That's exactly what I want to do but I have to make sure the rotor is all the same except the bolt pattern. My question is if the rotors are available. Thanks
calook1967 is offline  
Reply With Quote
Old December 24th, 2010, 8:58 PM
  #4  
CF Veteran
 
RacerX's Avatar
 
Join Date: Aug 2010
Location: New York City USA
Posts: 1,054
Default

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.
RacerX is offline  
Reply With Quote
Old March 11th, 2018, 11:23 AM
  #5  
CF Beginner
Thread Starter
 
Join Date: Dec 2010
Posts: 6
Default

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.
calook1967 is offline  
Reply With Quote
Old March 11th, 2018, 1:31 PM
  #6  
CF Pro Member
 
StanVan's Avatar
 
Join Date: Jul 2008
Location: Fairfax Virginia
Posts: 771
Default

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?
StanVan is offline  
Reply With Quote
Old March 11th, 2018, 2:07 PM
  #7  
CF Active Member
 
mountainmanjoe's Avatar
 
Join Date: Feb 2017
Posts: 246
Default

Reported.
You resurrected an 8 yr old topic, and posted something unrelated. Please learn some basic forum etiquette before posting again.
mountainmanjoe is offline  
Reply With Quote
Old March 11th, 2018, 3:49 PM
  #8  
CF Pro Member
 
StanVan's Avatar
 
Join Date: Jul 2008
Location: Fairfax Virginia
Posts: 771
Default

It's not totally unrelated, and he did start it. Besides, he doesn't have to fill in the back story to what he's modified. Lighten up.
StanVan is offline  
Reply With Quote
Old March 11th, 2018, 4:18 PM
  #9  
CF Active Member
 
mountainmanjoe's Avatar
 
Join Date: Feb 2017
Posts: 246
Default

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.

Last edited by mountainmanjoe; March 11th, 2018 at 4:21 PM.
mountainmanjoe is offline  
Reply With Quote
Old March 11th, 2018, 5:30 PM
  #10  
CF Pro Member
 
StanVan's Avatar
 
Join Date: Jul 2008
Location: Fairfax Virginia
Posts: 771
Default

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?
StanVan is offline  
Reply With Quote

Thread Tools
Search this Thread
Quick Reply: G20 van wheel change


Sponsors

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: