67 c10 crossmember control arm flip? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

KMAT · 11-30-2018, 08:00 PM

I've got a 1967 C10 short box Stepside I'm installing a 5 inch drop kit from Speedway Motors my question is do I have to change the brackets where the control arms bolt to the crossmember in order to get the right pinion angle on the rear end and driveshaft? Any help would be much appreciated thank you very much.

**PGSigns** · 12-03-2018, 07:51 AM

No just a 3 degree shim should do it.
Jimmy

KMAT · 12-03-2018, 09:28 AM

Hey thanks! Ive read so much on this issue and get bunch diff. Answeres.

**PGSigns** · 12-03-2018, 09:13 PM

The best way to do it is to measure the pinion and drive shaft angels and shim accordingly. I have done a couple and 3 degrees has been about right. Because of the shape of the training arms as you drop the nose on the rear points down and the shims bring it back up. I have 1 1/2" blocks in my 66 and machined the tops instead of adding shims. Speedway carries a wide selection of the shims.
Jimmy

11-30-2018, 08:00 PM	#1
KMAT Registered User Join Date: Oct 2018 Location: Sioux center, IA Posts: 81	67 c10 crossmember control arm flip? I've got a 1967 C10 short box Stepside I'm installing a 5 inch drop kit from Speedway Motors my question is do I have to change the brackets where the control arms bolt to the crossmember in order to get the right pinion angle on the rear end and driveshaft? Any help would be much appreciated thank you very much.

12-03-2018, 07:51 AM	#2
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: 67 c10 crossmember control arm flip? No just a 3 degree shim should do it. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

12-03-2018, 09:28 AM	#3
KMAT Registered User Join Date: Oct 2018 Location: Sioux center, IA Posts: 81	Re: 67 c10 crossmember control arm flip? Hey thanks! Ive read so much on this issue and get bunch diff. Answeres.

12-03-2018, 09:13 PM	#4
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: 67 c10 crossmember control arm flip? The best way to do it is to measure the pinion and drive shaft angels and shim accordingly. I have done a couple and 3 degrees has been about right. Because of the shape of the training arms as you drop the nose on the rear points down and the shims bring it back up. I have 1 1/2" blocks in my 66 and machined the tops instead of adding shims. Speedway carries a wide selection of the shims. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

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