Rear Axle Width
Melting Slicks
Joined: Mar 2001
Posts: 2,149
Likes: 303
From: Timra, Sweden
Rear tread 60.4 inches (1.534 m)
Wheel options:
16"x8.5" 32mm
16"x9.5" 38mm
Flange to flange should be tread width plus rim offset on each side. ( Assuming zero camber )
1534mm + 2*32mm = 1598mm.
1534mm + 2*38mm = 1610mm.
Both can not be correct.
Wheel options:
16"x8.5" 32mm
16"x9.5" 38mm
Flange to flange should be tread width plus rim offset on each side. ( Assuming zero camber )
1534mm + 2*32mm = 1598mm.
1534mm + 2*38mm = 1610mm.
Both can not be correct.
Thread Starter
Le Mans Master
Joined: Feb 2005
Posts: 6,479
Likes: 565
From: Clearwater Florida
..... I found the "track width" on Corvette Action Center but was hoping someone here would know the actual flange to flange number ... I can measure my car , but its laborious with the IRS ... its time for me to start the live axle search ... I've decided to go Ford 9" and so far Moser seems to have better pricing .....
Team Owner
Joined: Sep 2003
Posts: 25,387
Likes: 2,741
..... I found the "track width" on Corvette Action Center but was hoping someone here would know the actual flange to flange number ... I can measure my car , but its laborious with the IRS ... its time for me to start the live axle search ... I've decided to go Ford 9" and so far Moser seems to have better pricing .....
Last edited by WVZR-1; Nov 25, 2020 at 11:32 AM.
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
When I did the 9" rear swap in my 84, I measured the orginal IRS at 62" axel flange to axel flange on blocks at ride height..... thats the width I had my new 9" made. I wanted to keep the same Billet Specalties wheels I had with the IRS and the new 62" rear fits perfectly with 15x10" 6.5" Backspace wheels.... just like it did with the IRS.
Quick Performance did my 9" housing and Moser 35 spline axels. If you call them and talk with Brydon he'll be happy to go over the different housing and axel packages they have. Depending on what you want to do for rear suspension they may have brackets that will work as well.
FYI 62" is the same width as 3rd GEN F Body rear, so housing and axels are really easy to get.
Will
Quick Performance did my 9" housing and Moser 35 spline axels. If you call them and talk with Brydon he'll be happy to go over the different housing and axel packages they have. Depending on what you want to do for rear suspension they may have brackets that will work as well.
FYI 62" is the same width as 3rd GEN F Body rear, so housing and axels are really easy to get.
Will
Safety Car
Joined: Aug 2009
Posts: 3,751
Likes: 275
From: Melbourne, Victoria, Australia
When I did the 9" rear swap in my 84, I measured the orginal IRS at 62" axel flange to axel flange on blocks at ride height..... thats the width I had my new 9" made. I wanted to keep the same Billet Specalties wheels I had with the IRS and the new 62" rear fits perfectly with 15x10" 6.5" Backspace wheels.... just like it did with the IRS.
Quick Performance did my 9" housing and Moser 35 spline axels. If you call them and talk with Brydon he'll be happy to go over the different housing and axel packages they have. Depending on what you want to do for rear suspension they may have brackets that will work as well.
FYI 62" is the same width as 3rd GEN F Body rear, so housing and axels are really easy to get.
Will
Quick Performance did my 9" housing and Moser 35 spline axels. If you call them and talk with Brydon he'll be happy to go over the different housing and axel packages they have. Depending on what you want to do for rear suspension they may have brackets that will work as well.
FYI 62" is the same width as 3rd GEN F Body rear, so housing and axels are really easy to get.
Will
Sorry to hijack the thread, how does the C4 with solid axle 9 inch rear end drive on the highway and around windy roads?
Is the 9inch diff user friendly and have good road manners?
Am thinking of doing this with my C4, which is mainly a road car / TOY
for weekend use and occasional track days. Just would like to know if any odd behaviour can be expected ? Thanks
Gerard
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
Hi
Sorry to hijack the thread, how does the C4 with solid axle 9 inch rear end drive on the highway and around windy roads?
Is the 9inch diff user friendly and have good road manners?
Am thinking of doing this with my C4, which is mainly a road car / TOY for weekend use and occasional track days. Just would like to know if any odd behaviour can be expected ?
Thanks
Gerard
Sorry to hijack the thread, how does the C4 with solid axle 9 inch rear end drive on the highway and around windy roads?
Is the 9inch diff user friendly and have good road manners?
Am thinking of doing this with my C4, which is mainly a road car / TOY
for weekend use and occasional track days. Just would like to know if any odd behaviour can be expected ?Thanks
Gerard
I have also seen C4s converted to straight rears using a Torque Arm rear suspension patterned off 3rd and 4th Gen F Bodies which again are very good handling cars.
Most people use a common 4 link rear suspension when converting these cars. Highly configurable suspension design that can be set up to excel at anything.
Will
Will
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Safety Car
Joined: Aug 2009
Posts: 3,751
Likes: 275
From: Melbourne, Victoria, Australia
My 84 is primarily a drag car. While it's street legal and I have driven it quite a bit on the street - I haven't hit any twisty roads like I was trying to be serious about testing its cornering abilities.... I have a 3 link rear suspension that is patterned off the S197 Mustang which are very good handling cars. 3 links of this design are also the rear suspension of choice for oval track pavement late models. I have also seen a number of Trans Am road racing cars with the same 3 link. I am sure with proper tires and spring rates my 84 would handle just fine.
I have also seen C4s converted to straight rears using a Torque Arm rear suspension patterned off 3rd and 4th Gen F Bodies which again are very good handling cars.
Most people use a common 4 link rear suspension when converting these cars. Highly configurable suspension design that can be set up to excel at anything.
Will
Will
I have also seen C4s converted to straight rears using a Torque Arm rear suspension patterned off 3rd and 4th Gen F Bodies which again are very good handling cars.
Most people use a common 4 link rear suspension when converting these cars. Highly configurable suspension design that can be set up to excel at anything.
Will
Will
Thank you for the info
Gerard
Le Mans Master
Joined: Aug 2015
Posts: 6,091
Likes: 1,972
From: St. Charles MO
The 9.5" wheels were only on the Z51 option. I would ***-ume the published track width was for the base model with 8.5" et32 wheels. So 1598mm dimension should be correct, and the track width for the Z51 option was really 1546mm.