Frame Mods to fit 12" Wide Wheel on 1965 Chevelle

[MarkM66]

I narrowed the frame on my '66 the same way. But I moved mine in 3" per side instead of 2" like Malitude. Which fit a 20x12 with a 335/30

[JND]

I just picked up another frame and was looking to move the frame rails in 2-3 inches to fit 18x13 335's on my 69 chevelle. do you have any pic's on the upper support modifications. i have a good idea but wanted to ask in the event i am missing somthing. I also had some concerns about lossing my sway bar. i noticed Malitude still has a rear sway bar, any idea how that was modified to fit the narrowed control arm gap. i am thinking of Hotchkis's extreme sway bar kit may work sinc it does not mount to control arms.

Thanks Joe

[MarkM66]

Originally Posted by JND

I just picked up another frame and was looking to move the frame rails in 2-3 inches to fit 18x13 335's on my 69 chevelle. do you have any pic's on the upper support modifications. i have a good idea but wanted to ask in the event i am missing somthing. I also had some concerns about lossing my sway bar. i noticed Malitude still has a rear sway bar, any idea how that was modified to fit the narrowed control arm gap. i am thinking of Hotchkis's extreme sway bar kit may work sinc it does not mount to control arms.

Thanks Joe

2" isn't going to cut it if you want to fit a 13" wheel. Do you mean 12" wheel?

What do you mean by "upper support"? Where the uca connect to the frame?

[JND]

i want to run 13 inch wide rims, should i run 12" with 335's? i was told i could run upto 13" wide. Currently i have 10" rims 285's with 6" BS and have 1.5" to the frame so going in 3" would leave me with 1.5" running 13" rims with 9" BS.

Yes i am refering to the support where the UCA mount. i am thinking i would have to remove 3" from each side and reattach to the frame rails. then move the LCA mounts and coil mounts in 3".

Joe

[MarkM66]

Originally Posted by JND

i want to run 13 inch wide rims, should i run 12" with 335's? i was told i could run upto 13" wide. Currently i have 10" rims 285's with 6" BS and have 1.5" to the frame so going in 3" would leave me with 1.5" running 13" rims with 9" BS.

Yes i am refering to the support where the UCA mount. i am thinking i would have to remove 3" from each side and reattach to the frame rails. then move the LCA mounts and coil mounts in 3".

Joe

I think most run a 12" wheel with that tire. What do the tire specs say on rim range?

Yeah, that's what I did on my uca crossmember, and coil mounts/lca brackets.

[JND]

You would be correct, range is 11.5-12.0-12.5. so looks like 12 is the sweet spot. i guess i still need to move the frame rails in 3" since the tires are 13.3 wide.

Do you have a rear sway bar?

[MarkM66]

Originally Posted by JND

You would be correct, range is 11.5-12.0-12.5. so looks like 12 is the sweet spot. i guess i still need to move the frame rails in 3" since the tires are 13.3 wide.

Do you have a rear sway bar?

I never put a sway bar on it. I don't have it anymore, and didn't drive it enough to know if it needed one or not.

[okyankee]

Originally Posted by MarkM66

I narrowed the frame on my '66 the same way. But I moved mine in 3" per side instead of 2" like Malitude. Which fit a 20x12 with a 335/30

i want to do the same on my 65 chevelle. is this the stock width rear end just with wheels with correct backspacing? thanks for any help.

[camcojb]

Originally Posted by okyankee

i want to do the same on my 65 chevelle. is this the stock width rear end just with wheels with correct backspacing? thanks for any help.

On Malitude it was a narrowed rear end, and I'd guess Mark did the same. If you minitub but keep the rear end stock width you end up with wheels with no depth to them. In other words, they'll have to have a lot of backspacing to be wide and still fit. If you narrow the rear you can get a more centered wheel offset which I think looks much better.



Jody

[okyankee]

Originally Posted by camcojb

On Malitude it was a narrowed rear end, and I'd guess Mark did the same. If you minitub but keep the rear end stock width you end up with wheels with no depth to them.

Jody

then that calls for some rear end chopping. thanks for the help.