C10 Rear suspension question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

maniago · 11-28-2003, 11:55 AM

Oops I posted this in the E&D section by mistake.......I'll try to make this short, tho its a puzzle. Background: new to my stable is an abused '65 C10-Short Fleet. Driver side wheel base is 114.25" and passenger is 115.5'. Been hit in the front drivers corner many years ago and also rebuilt many years ago.....frame has no apparent damage back from the front a-arms (ie its straight and no popped rivets). Cab is on the frame in the original bolt down location and is straight (doors don't bind). Trailing arms are not bent, and measure the same length, are mounted in the right locations on the axle, but the whole axle assembly is shifted about 3" to the driver's side - trailing arms reflect the angle shift at the front mount (maybe 2 or 3 degrees - hard to estimate) and front end bushings on the trailing arms show long term "offset" wear.
Since everything rear end related is straight and in line the only thing I can come up with is that the panard bar (stock) is somehow too short and is forcing the axle to the side, thereby shortening/elongating the wb - BTW this is a '63 axle with the welded panard bracket vice the '65 carrier stud mount (according to the '65 Chevy manual sup). Questions: Can/should '63 axle cause this problem in '65s? Is the frame end panard mount on '63&'65s the same? If these are not issues, what is the correct center to center length of the '63 panard bar vice the '65 bar? Am I crazy?

Thanks for any help. Mick

Tx Firefighter · 11-28-2003, 12:44 PM

Contact IRONBUTTLCMC for this question. He just went through the hell you're describing on his truck. He's the expert on this area.

maniago · 11-28-2003, 05:52 PM

Ok done. Thanks TxF - hopefully he'll have some good words. Cheers Mick

rodnok1 · 11-28-2003, 06:06 PM

Measure the panhard bar, 24 inches is for the intergal mount and the 27 inch is for the type that welds on axle.

maniago · 11-28-2003, 10:14 PM

Thanks - now I've got something to work with.

Anyone know if someone makes an adjustable p-rod for this (must be someone with all the slam projects out there), or do I have to fire up my smoke-wrench?

68LSS1 · 11-30-2003, 10:08 PM

60-64 27" or 65-72 24" . the first link is the picture the second is to their catalogue.

11-28-2003, 11:55 AM	#1
maniago Registered User Join Date: Nov 2003 Location: Maryland Posts: 4	C10 Rear suspension question Oops I posted this in the E&D section by mistake.......I'll try to make this short, tho its a puzzle. Background: new to my stable is an abused '65 C10-Short Fleet. Driver side wheel base is 114.25" and passenger is 115.5'. Been hit in the front drivers corner many years ago and also rebuilt many years ago.....frame has no apparent damage back from the front a-arms (ie its straight and no popped rivets). Cab is on the frame in the original bolt down location and is straight (doors don't bind). Trailing arms are not bent, and measure the same length, are mounted in the right locations on the axle, but the whole axle assembly is shifted about 3" to the driver's side - trailing arms reflect the angle shift at the front mount (maybe 2 or 3 degrees - hard to estimate) and front end bushings on the trailing arms show long term "offset" wear. Since everything rear end related is straight and in line the only thing I can come up with is that the panard bar (stock) is somehow too short and is forcing the axle to the side, thereby shortening/elongating the wb - BTW this is a '63 axle with the welded panard bracket vice the '65 carrier stud mount (according to the '65 Chevy manual sup). Questions: Can/should '63 axle cause this problem in '65s? Is the frame end panard mount on '63&'65s the same? If these are not issues, what is the correct center to center length of the '63 panard bar vice the '65 bar? Am I crazy? Thanks for any help. Mick

11-28-2003, 12:44 PM	#2
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Contact IRONBUTTLCMC for this question. He just went through the hell you're describing on his truck. He's the expert on this area. __________________ I'm on the Instagram- @Gearhead_Kevin

11-28-2003, 06:06 PM	#4
rodnok1 Registered User Join Date: Jun 2003 Location: Linden, North Carolina Posts: 617	Measure the panhard bar, 24 inches is for the intergal mount and the 27 inch is for the type that welds on axle. __________________ 64 Panel Rebuild Pics Clutch Replacement and Borg Warner T10 Trans Rebuild 64 Panel 1/2 Ton 350cubes/400hp BorgWarner t-10 3:73 Auburn Posi

11-30-2003, 10:08 PM	#6
68LSS1 Registered User Join Date: Dec 2002 Location: Tampa Posts: 1,191	60-64 27" or 65-72 24" . the first link is the picture the second is to their catalogue. __________________ '68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc

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11-28-2003, 05:52 PM	#3
maniago Registered User Join Date: Nov 2003 Location: Maryland Posts: 4	Ok done. Thanks TxF - hopefully he'll have some good words. Cheers Mick

11-28-2003, 10:14 PM	#5
maniago Registered User Join Date: Nov 2003 Location: Maryland Posts: 4	Thanks - now I've got something to work with. Anyone know if someone makes an adjustable p-rod for this (must be someone with all the slam projects out there), or do I have to fire up my smoke-wrench?



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