70 to 68 suspension swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shooterpcb · 05-09-2009, 11:40 PM

I found a 5 lug 1970 LWB C-10 truck with heavy duty suspension that had a 396/TH400 in it originally. Is there anything that would prevent the complete rear end and front hubs from swapping on to my 68 to replace the 6 lug setup? I have been told the axle widths are different? Will this stick way out on my '68 swb? Thanks!

68c10owner · 05-10-2009, 01:20 AM

There were 2 widths for 1970. The early 1970 will be the same width as the 68. The later 70 will be the same as 71-72. It`s not that much wider overall and shouldn`t cause any problems depenfding on wheel/tire size.

dan42 · 05-10-2009, 01:26 AM

There are guys that will put spacers on the older style rear ends to widen them - I'm thinking about doing it to my '67.

shooterpcb · 05-10-2009, 09:45 AM

Thanks for the help. Also, what is the best way to switch out the rear brake lines..any tips on that? and should I use the trailing arms on the rearend from my truck or the donor truck, or does it matter? Thanks!!

cdowns · 05-10-2009, 09:56 AM

1970 trucks had 6lugs and drum brakes// so that 70 doesnt have 70 stuff on it to start out so who knows what you'll end up with

PanelDeland · 05-10-2009, 09:56 AM

Use the best pair of trailing arms.Or the ones from the donor since they will be out and can be cleaned and painted easier.You can also replace the bushings and all then have the truck down for a shorter period to do the swap.The brake lines are a bit different from year to year but I'm not familiar with which is which.Ooop's cdowns spotted something i didn't.

05-09-2009, 11:40 PM	#1
shooterpcb Registered User Join Date: Aug 2007 Location: alabama Posts: 72	70 to 68 suspension swap I found a 5 lug 1970 LWB C-10 truck with heavy duty suspension that had a 396/TH400 in it originally. Is there anything that would prevent the complete rear end and front hubs from swapping on to my 68 to replace the 6 lug setup? I have been told the axle widths are different? Will this stick way out on my '68 swb? Thanks! __________________ 1968 C-10 2wd, short bed fleetside, 355 Chevy, TH350, 12 bolt pegleg, '81 Camaro cowl induction on hood(I don't like it, previous owner did it), 10" wide 15"wheels.

05-10-2009, 01:20 AM	#2
68c10owner Registered User Join Date: Oct 2003 Location: Carmichael, California Posts: 3,005	Re: 70 to 68 suspension swap There were 2 widths for 1970. The early 1970 will be the same width as the 68. The later 70 will be the same as 71-72. It`s not that much wider overall and shouldn`t cause any problems depenfding on wheel/tire size. __________________ Anthony

05-10-2009, 01:26 AM	#3
dan42 Registered User Join Date: Feb 2007 Location: Cali Central Coast Posts: 5,191	Re: 70 to 68 suspension swap There are guys that will put spacers on the older style rear ends to widen them - I'm thinking about doing it to my '67. __________________ '67 SWB Fleetside ZZ4/350/Tremec 5-speed/4link/Scott's IFS - and fun as heck! SOLD Click here to support the board Philippians 4: 6-7

05-10-2009, 09:45 AM	#4
shooterpcb Registered User Join Date: Aug 2007 Location: alabama Posts: 72	Re: 70 to 68 suspension swap Thanks for the help. Also, what is the best way to switch out the rear brake lines..any tips on that? and should I use the trailing arms on the rearend from my truck or the donor truck, or does it matter? Thanks!! __________________ 1968 C-10 2wd, short bed fleetside, 355 Chevy, TH350, 12 bolt pegleg, '81 Camaro cowl induction on hood(I don't like it, previous owner did it), 10" wide 15"wheels.

05-10-2009, 09:56 AM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: 70 to 68 suspension swap 1970 trucks had 6lugs and drum brakes// so that 70 doesnt have 70 stuff on it to start out so who knows what you'll end up with __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

05-10-2009, 09:56 AM	#6
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: 70 to 68 suspension swap Use the best pair of trailing arms.Or the ones from the donor since they will be out and can be cleaned and painted easier.You can also replace the bushings and all then have the truck down for a shorter period to do the swap.The brake lines are a bit different from year to year but I'm not familiar with which is which.Ooop's cdowns spotted something i didn't. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil" Last edited by PanelDeland; 05-10-2009 at 09:56 AM.

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