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Author Topic:   Moving rear axle back?
steve'66
Gearhead

Posts: 7226
From: Sonoma,CA,USA
Registered: Mar 2000

posted 05-04-2003 08:32 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Anyone ever moved their rear end forward or back by relocating the center hole in the spring perches? I've got 3/4" clearance in the front of the 26" tall slicks and 2 1/4" behind. If I can relocate the axle back 3/4" I can clear 28" slicks. I thought about relocating the spring back, but it'll hit the vallence if I do. Any ideas?

SteveW

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jsracingbbf
Gearhead

Posts: 2160
From: Batesville,MS. , U.S.A.
Registered: Mar 2002

posted 05-04-2003 10:21 PM     Click Here to See the Profile for jsracingbbf   Click Here to Email jsracingbbf     Edit/Delete Message   Reply w/Quote
Steve, I moved mine back to keep from "sectioning" the fender wells like alot of guys do to run bigger tires. BUT it was done when we back halved the car. We just made a new center line 2 inches back from the original. I also lengthened my front end when I did the front clip this last winter. wasn't any harder than welding it back in the same place really. I think you could do it. I don't know about a leaf spring car but it helped my car.

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Jerry
69 Mustang Pro ET Drag
70 Mustang retired former footbrake car

"Whiskey for my men, beer for my Horses" -- Toby Keith

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jsracingbbf
Gearhead

Posts: 2160
From: Batesville,MS. , U.S.A.
Registered: Mar 2002

posted 05-04-2003 10:22 PM     Click Here to See the Profile for jsracingbbf   Click Here to Email jsracingbbf     Edit/Delete Message   Reply w/Quote
Might be a good time to go with a coilover kit huh Steve?
JS

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steve'66
Gearhead

Posts: 7226
From: Sonoma,CA,USA
Registered: Mar 2000

posted 05-04-2003 10:23 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Jerry,

I just don't want to hammer or take a sawzall to the rear 1/4's. I have too much personal time invested in the bodywork.

SteveW

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steve'66
Gearhead

Posts: 7226
From: Sonoma,CA,USA
Registered: Mar 2000

posted 05-04-2003 10:25 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Jerry,

No coilovers, I gotta try these cool fiberglass mono's/cal-tracs first.

SteveW

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Rory McNeil
Gearhead

Posts: 1311
From: Surrey, B.C. Canada
Registered: Nov 2000

posted 05-04-2003 11:25 PM     Click Here to See the Profile for Rory McNeil   Click Here to Email Rory McNeil     Edit/Delete Message   Reply w/Quote
Steve, I`ve moved the housing back on my 70 Mach 1 years ago, it worked out fine. I just moved it back about 3/4", as a 28" slick would fit as is. but tire growth caused some light contact at the front of the wheelwell/rocker panel area. All I did was drill a new hole in the leaf spring perchs for the center bolt. On my car I didn`t even need to do anything with driveshaft, as the slip yoke was in the trans. more than enough.

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78 Fairmont 428 4 speed [email protected]
80 Fairmont 302 5 speed [email protected]
85 Mustang NHRA Stocker under construction, 302 5 speed
59 Meteor (Canadian Ford) 2 dr sedan 332, auto
74 F350 ramp truck 390 4spd

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steve'66
Gearhead

Posts: 7226
From: Sonoma,CA,USA
Registered: Mar 2000

posted 05-04-2003 11:26 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Rory,

Thanks! That's what I'm talking about.

Glad to hear that it didn't cause any other problems.

SteveW

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TomP
Gearhead

Posts: 5025
From: Delta BC Canada
Registered: Dec 99

posted 05-05-2003 02:29 PM     Click Here to See the Profile for TomP   Click Here to Email TomP     Edit/Delete Message   Reply w/Quote
I've moved mine forward doing the same thing with the center hole on the perch. If you have to cut the quarters anyways, move it forward and just cut the front side. On 64-65 Falcons and Comets this prevents the "Weiner Dog" look

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jsracingbbf
Gearhead

Posts: 2160
From: Batesville,MS. , U.S.A.
Registered: Mar 2002

posted 05-05-2003 03:48 PM     Click Here to See the Profile for jsracingbbf   Click Here to Email jsracingbbf     Edit/Delete Message   Reply w/Quote
Longer wheelbase = more high speed stability.

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TomP
Gearhead

Posts: 5025
From: Delta BC Canada
Registered: Dec 99

posted 05-06-2003 11:05 PM     Click Here to See the Profile for TomP   Click Here to Email TomP     Edit/Delete Message   Reply w/Quote
Longer wheelbase = more front heavy too.

It's easier to get the shorter wheelbase car to hook. Adding 3/4" isn't going to make a noticable difference in stability or traction anyways.

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popeye
Gearhead

Posts: 124
From: midwest USA
Registered: Dec 2002

posted 05-07-2003 12:40 AM     Click Here to See the Profile for popeye   Click Here to Email popeye     Edit/Delete Message   Reply w/Quote
Steve we moved the rear housing back on the '69 fastback 5/8 of an inch by drilling a new hole in the spring perch too.We've had a 29x10 slick on the car with no problems.
popeye

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This is FORD COUNTRY, where on a quiet night, you can here a chevy rusting

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steve'66
Gearhead

Posts: 7226
From: Sonoma,CA,USA
Registered: Mar 2000

posted 05-07-2003 12:52 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Thanks everyone for the reassurance!

SteveW

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