How To replace front control arm bushings.
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Senior Member
Joined: Nov 2003
Posts: 953
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From: Waterloo, Iowa
Car: 1992 Camaro RS 25th Aniversarry Edition
Engine: 305
Transmission: TH-700-R4
Axle/Gears: 10 bolt with 3.23's and SLP Posi.
How To replace front control arm bushings.
i know how to get to them, and i have purchased a set of Prothane Polyurethane bushings, and i would like to know the easiest way to get the old ones out and the new ones in?
Joined: Dec 1999
Posts: 5,964
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From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
Use a die grinder with an abrasive blade. Cut the core, then it will easily press out. I used a hydraulic press to push the new ones in. Be carefull to support the inner surface properly so you don't bend (collapse) it. I have a cheap fix for that if you find you did.
Lon
Lon
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Senior Member
Joined: Nov 2003
Posts: 953
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From: Waterloo, Iowa
Car: 1992 Camaro RS 25th Aniversarry Edition
Engine: 305
Transmission: TH-700-R4
Axle/Gears: 10 bolt with 3.23's and SLP Posi.
Originally posted by lonsal
Use a die grinder with an abrasive blade. Cut the core, then it will easily press out. I used a hydraulic press to push the new ones in. Be carefull to support the inner surface properly so you don't bend (collapse) it. I have a cheap fix for that if you find you did.
Lon
Use a die grinder with an abrasive blade. Cut the core, then it will easily press out. I used a hydraulic press to push the new ones in. Be carefull to support the inner surface properly so you don't bend (collapse) it. I have a cheap fix for that if you find you did.
Lon
Joined: Dec 1999
Posts: 5,964
Likes: 37
From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
As mentioned before I used a hydraulic press to push in the new bushings. But the a-arm wasn't supported well enough I guess. When I went to install it in the car I discovered the a-arm had closed up a little.
Here's my simple fix: I went to Home Depot and got a 2' piece of all-thread (largest size that would fit through the bushing ID), heavy duty washers and nuts. I lubed the all-thread with some grease, then slipped it into the ID of the bushings installing washers and nuts on the inner surfaces. Then I turned the nuts until it spread the a-arm open enough to install. I over corrected a bit to allow for spring-back. Then I cleaned up the all-thread nuts & washers and returned them to Home Depot. Shh!
Lon
Here's my simple fix: I went to Home Depot and got a 2' piece of all-thread (largest size that would fit through the bushing ID), heavy duty washers and nuts. I lubed the all-thread with some grease, then slipped it into the ID of the bushings installing washers and nuts on the inner surfaces. Then I turned the nuts until it spread the a-arm open enough to install. I over corrected a bit to allow for spring-back. Then I cleaned up the all-thread nuts & washers and returned them to Home Depot. Shh!
Lon
Thread Starter
Senior Member
Joined: Nov 2003
Posts: 953
Likes: 0
From: Waterloo, Iowa
Car: 1992 Camaro RS 25th Aniversarry Edition
Engine: 305
Transmission: TH-700-R4
Axle/Gears: 10 bolt with 3.23's and SLP Posi.
now do the factory bushings have the same metal outer shell that these Prothanes have? or do i not use the metal shell? or what?
I didnt have access to any presses or anything so I just took the a-arms to the shop that does my alignment. They installed the PST front a-arm bushings as well as the balljoints for $40. Putting them back on tonight ...
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Joined: Feb 2005
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From: Fort Lauderdale, FL
Car: 91 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73 Posi w/Disc
Old rubber likes to stick to the old case shell. I torched the bushing cases until the rubber inside could be pushed out with a press. Then I used my dremel to place a small nick in the inside of the case where it contacts the control arm & went nuts on the outside of the old shell with a hammer & chisel. It was pretty easy to pull the old shells, but getting the new ones in were EVIL! After spending maybe 2 days trying, I went to a race shop & paid them $15 to press new ones in, but (as I've stated elsewhere here) the shop almost broke their 4 ton hydaulic press getting the new bushings in. In hindsight, It would have been worth it to buy new tubular arms just because they come with new bushings. If I had to do it again, I'd pull the arms and give them to a shop to begin with and save the headache for a later day...
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Joined: Sep 2001
Posts: 2,308
Likes: 2
From: winthrop harbor, il & plymouth, il
Car: 1986 camaro
Engine: 383 sbc
Transmission: th-400
Axle/Gears: 4th Gen 10 bolt/Detroit TrueTrac 4.
just for reference, harbor freight has this tool on sale at 20 bucks and it is amazing. i used it to press my front and rear control arm bushings in and out. it worked very well and went in/out very smoothly.
Re: How To replace front control arm bushings.
just for reference, harbor freight has this tool on sale at 20 bucks and it is amazing. i used it to press my front and rear control arm bushings in and out. it worked very well and went in/out very smoothly.
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iTrader: (3)
Joined: Jun 2007
Posts: 2,359
Likes: 5
From: Pennsylvania
Car: 1992 Camaro RS
Engine: Rebuilt 350 going in after paint
Transmission: WCT5, 7k & counting behind the 350
Axle/Gears: 4thgen disc rear w/ 3.73 Posi
Re: How To replace front control arm bushings.
I used a 1/4" drill bit to drill out as much of the old bushings as I could, then used my jigsaw to "connect the dots" so to speak to get the old ones out. I cut the outer shells out using my dremel. I used the same tool linked above to press the new ones in.
Joined: Dec 1999
Posts: 5,964
Likes: 37
From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
Re: How To replace front control arm bushings.
Harbor Freight fail: SORRY, NO ITEMS FOUND FOR ''38335''
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Joined: Dec 2007
Posts: 475
Likes: 2
From: Minnesota
Car: '88 Iroc
Engine: Single turbo Vortec 5.7, Megasquirt
Transmission: Probuilt 700r4 3000 stall Vigilante
Axle/Gears: Moser 9" 3.25 w/True Trac
Re: How To replace front control arm bushings.
What worked for me was to drill a hole near the outside through the rubber bushing and when the bit rubbed on the ID of the hole, the drill bit walked around the OD of the rubber and due to the flutes it walked the rubber bushing right out. The bit was a smaller one, maybe 1/4" or so.
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Joined: Aug 2008
Posts: 1,485
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From: Short Summer, VT
Car: 1985 Trans Am T-Top
Engine: 305 TPI
Transmission: T-5 5 Speed
Axle/Gears: 3.42 posi 1LE 10 bolt
Re: How To replace front control arm bushings.
I burned out the rubber, then collapsed the sleeves.
Usually I use my 12 ton shop press for this sort of things but I found these arms just don't fit so I used my OTC ball joint press (a heavy duty c clamp with press fittings). Worked great. The key is you have to insert some solid spacers in the gap between the two "prongs" so they don't squeeze together. I used press arbors and metal shims.
One of the bushing sleeves is flared by the factory after being pressed in. Makes it a bit more challenging to get out. The fsm says to reflare the new sleeve, but I just can't see why it's necessary so I didn't bother.
Usually I use my 12 ton shop press for this sort of things but I found these arms just don't fit so I used my OTC ball joint press (a heavy duty c clamp with press fittings). Worked great. The key is you have to insert some solid spacers in the gap between the two "prongs" so they don't squeeze together. I used press arbors and metal shims.
One of the bushing sleeves is flared by the factory after being pressed in. Makes it a bit more challenging to get out. The fsm says to reflare the new sleeve, but I just can't see why it's necessary so I didn't bother.
Joined: Oct 2001
Posts: 12,211
Likes: 1,135
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: How To replace front control arm bushings.
What worked for me was to drill a hole near the outside through the rubber bushing and when the bit rubbed on the ID of the hole, the drill bit walked around the OD of the rubber and due to the flutes it walked the rubber bushing right out. The bit was a smaller one, maybe 1/4" or so.
Joined: Dec 2005
Posts: 6,499
Likes: 31
From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: How To replace front control arm bushings.
Given the difficulty of this job, I just take my removed A-arms to a chassis/alignment shop and have them do it. I had them put in my ball joints while they did the bushings and it cost me $60 or something.
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