A-Arms - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mexgrhd68 · 12-12-2010, 05:45 PM

do the a-arms from 73-87 bolt right up to the 67-72? are they any wider than the 67-72?

Zeke · 12-12-2010, 08:13 PM

they bolt right up, don't think they are any wider, didn't check when I converted mine to disc, no issue.

raycow · 12-13-2010, 03:05 PM

The arms alone won't swap. You need to swap the shafts too. If you use the 73-up U-bolts on the lowers you will need to slightly enlarge the holes in the crossmember. Otherwise, everything fits.

Ray

**lolife99** · 12-13-2010, 03:13 PM

The only difference will be the "rubber bushed" cross shafts and the balljoints.

mexgrhd68 · 12-16-2010, 03:26 AM

any pics?.....

mexgrhd68 · 12-19-2010, 04:52 PM

Quote:

Originally Posted by raycow

The arms alone won't swap. You need to swap the shafts too. If you use the 73-up U-bolts on the lowers you will need to slightly enlarge the holes in the crossmember. Otherwise, everything fits.

Ray

can i use the 67-72 lower u-bolts to bolt up the lowers instead???

Jacfourteen · 12-19-2010, 05:56 PM

Interesting thread, sounds like an easy swap.

Allensracing · 12-19-2010, 06:01 PM

its a simple swap, i have just never understood why someone would want the rubber bushings instead of the metal ones that come stock.

sameyrasmea72 · 12-19-2010, 06:52 PM

Quote:

Originally Posted by mexgrhd68

any pics?.....

Here are some pics. The 73 and up pics are crappy but you get the idea. You can see the rubber on the 73 parts and the all metal 72. As far as the u-bolt the 73-87 ones work fine on a 72 front end like these. . The over all thickness of the bolt is bigger, but it fits the shaft and goes through the cross member fine.

raycow · 12-19-2010, 10:22 PM

Quote:

Originally Posted by Allensracing

i have just never understood why someone would want the rubber bushings instead of the metal ones that come stock.

How about: they last longer, they don't need greasing, they don't pick up dirt, they cost less and they are easier to find? Also, some people (but not me) say they ride better and transmit less noise/shock to the frame/body.

Most cars switched from metal to rubber bushings in the 50s. The trucks just took a little longer.

Ray

mexgrhd68 · 12-28-2010, 01:24 AM

cool...son is gonna bag his truck, switch to tubular a-arms, and i may transfer his arms from his 79 to my 68....already have new bushings installed also..

Zeke · 12-28-2010, 07:53 AM

Quote:

As far as the u-bolt the 73-87 ones work fine on a 72 front end like these.

True 73-87 u-bolts work, they are bigger around and when I did my 69 thought I would need to make the hole bigger but after looking the new u-bolts they were spead apart just a little. Put a nut on one side and tapped it with a hammer against a 2x4 and fit perfect.

12-12-2010, 05:45 PM	#1
mexgrhd68 Registered User Join Date: Apr 2007 Location: Visalia, CA. Posts: 327	A-Arms do the a-arms from 73-87 bolt right up to the 67-72? are they any wider than the 67-72? __________________ 68 c-10 1/2 ton swb fleetside, 79 GMC Sierra Grande 1/2 ton swb fleetside, 99 Dodge Durango 4x4(wifes ride),53 and 55 chevy trucks(dads trucks ) 54 caddy 62 series 4 door(younger sons ride, aka 54caddy ) 70 caddy 2 door, 89 chevy silverado stepside(older sons rides )

12-12-2010, 08:13 PM	#2
Zeke Active Member Join Date: Jun 2002 Location: L.A. Lower Alabama Posts: 453	Re: A-Arms they bolt right up, don't think they are any wider, didn't check when I converted mine to disc, no issue. __________________ 1969 C10 350 3spd 1995 GMC 3500 XC 350 dually When Thomas Edison worked late into the night on the electric light, he had to do it by gas lamp or candle. I'm sure it made the work seem that much more urgent. George Carlin Last edited by Zeke; 12-12-2010 at 08:16 PM.

12-13-2010, 03:05 PM	#3
raycow Registered User Join Date: Mar 2003 Location: San Francisco, CA USA Posts: 2,454	Re: A-Arms The arms alone won't swap. You need to swap the shafts too. If you use the 73-up U-bolts on the lowers you will need to slightly enlarge the holes in the crossmember. Otherwise, everything fits. Ray __________________ Live more responsibly. Eat lower on the food chain. Eat vegetarians.

12-13-2010, 03:13 PM	#4
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: A-Arms The only difference will be the "rubber bushed" cross shafts and the balljoints. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

12-16-2010, 03:26 AM	#5
mexgrhd68 Registered User Join Date: Apr 2007 Location: Visalia, CA. Posts: 327	Re: A-Arms any pics?..... __________________ 68 c-10 1/2 ton swb fleetside, 79 GMC Sierra Grande 1/2 ton swb fleetside, 99 Dodge Durango 4x4(wifes ride),53 and 55 chevy trucks(dads trucks ) 54 caddy 62 series 4 door(younger sons ride, aka 54caddy ) 70 caddy 2 door, 89 chevy silverado stepside(older sons rides )

12-19-2010, 05:56 PM	#7
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: A-Arms Interesting thread, sounds like an easy swap. __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

12-19-2010, 06:01 PM	#8
Allensracing Registered User Join Date: Dec 2010 Location: Paradise, ca Posts: 295	Re: A-Arms its a simple swap, i have just never understood why someone would want the rubber bushings instead of the metal ones that come stock. __________________

12-28-2010, 01:24 AM	#11
mexgrhd68 Registered User Join Date: Apr 2007 Location: Visalia, CA. Posts: 327	Re: A-Arms cool...son is gonna bag his truck, switch to tubular a-arms, and i may transfer his arms from his 79 to my 68....already have new bushings installed also.. __________________ 68 c-10 1/2 ton swb fleetside, 79 GMC Sierra Grande 1/2 ton swb fleetside, 99 Dodge Durango 4x4(wifes ride),53 and 55 chevy trucks(dads trucks ) 54 caddy 62 series 4 door(younger sons ride, aka 54caddy ) 70 caddy 2 door, 89 chevy silverado stepside(older sons rides )

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