Chevelle 12 bolt??

SSGN · 11-13-2011, 08:55 PM

I have a 66 Chevelle that i am looking for a 12 bolt for and was told the 66/67 is different than the 68/72 .No body seems to know why.Can anyone on here shine some light on this.Thanks in advance

Kevin

REGGIE WINKLES · 11-13-2011, 09:06 PM

I've swaped 12 bolts from a 69 to a 67 with no problems on either car.

Dwight Southerland · 11-13-2011, 09:40 PM

'65-'66 & early '67 are shorter than the later rear ends. Spring seats are different is some of those years, too.

Run to Rund · 11-13-2011, 09:42 PM

The later unit is about 3/8" per side wider. Spring mounts are flat plates on the early one, using a formed steel top cup and a 7/16" bolt to hold the spring. 68-up use a small "tower" as a seat and the spring pigtail simply plugs into it.

11-13-2011, 08:55 PM	#1
SSGN Senior Member Join Date: Feb 2006 Posts: 646 Likes: 132 Liked 140 Times in 51 Posts	Chevelle 12 bolt?? I have a 66 Chevelle that i am looking for a 12 bolt for and was told the 66/67 is different than the 68/72 .No body seems to know why.Can anyone on here shine some light on this.Thanks in advance Kevin

11-13-2011, 09:06 PM	#2
REGGIE WINKLES Member Join Date: Jun 2007 Location: St. Augustine, Fla. Posts: 229 Likes: 569 Liked 39 Times in 9 Posts	Re: Chevelle 12 bolt?? I've swaped 12 bolts from a 69 to a 67 with no problems on either car. __________________ Reggie Winkles 2650/Stock

11-13-2011, 09:40 PM	#3
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 2,001 Likes: 64 Liked 780 Times in 194 Posts	Re: Chevelle 12 bolt?? '65-'66 & early '67 are shorter than the later rear ends. Spring seats are different is some of those years, too.

11-13-2011, 09:42 PM	#4
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 583 Likes: 8 Liked 54 Times in 27 Posts	Re: Chevelle 12 bolt?? The later unit is about 3/8" per side wider. Spring mounts are flat plates on the early one, using a formed steel top cup and a 7/16" bolt to hold the spring. 68-up use a small "tower" as a seat and the spring pigtail simply plugs into it.