12 bolt need help with I.D. - Page 2

Tom keedle · 12-08-2009, 05:27 AM

Quote:

Originally Posted by FED 387

Housing widths --------backing plate to backing plate
64-67 Chevelle ---61 inches
68-72 Chevelle/Monte Carlo----62 inches
65-70 Big Car----62.4 inches

Comp 387

that looks more like the wheel mounting surface (flange to flange) measurements

try not to end up with a truck 12 bolt...

stock eliminator · 12-10-2009, 09:11 PM

I measured the housing flanges outside to outside and it measures 55 1/4 "

FED 387 · 12-10-2009, 09:26 PM

My source tells me

64-67 is 56 1/2 flange to flange and 60 1/2 outside of brake drum to outside of brake drum
68-72 measurements are/is 58 1/2 and 62 1/2
68 was the transitional year so some early 68 vehicles might have leftover 67 housings

anyway kdc info is still correct--Comp 387

stock eliminator · 12-12-2009, 08:31 AM

i measured the welded on flanges that the brake plate bolts too that are on the axle tubes.
i guarantee it's NOT a truck rear.

jimmyparker · 12-12-2009, 08:52 AM

55 1/4" is the flange to flange measurement for a 68-72 Chevelle or Monte Carlo housing.

Tom keedle · 12-12-2009, 09:54 AM

i've got a 67 chevelle sitting out back of the shop right now BUT it's covered in that white stuff right now.
got a 10 bolt in it though..
how big of a hurry are ya for measurements?or is that even what you need?
i AM surpised at all the chevelle info that's out there, that there isn't any code charts...

FED 387 · 12-12-2009, 10:55 AM

Go to a website CHEVELLESTUFF.COM one of the best out there gives you almost everything you need to know about deciphering GM codes on these cars---Comp 387

12-10-2009, 09:11 PM	#12
stock eliminator Junior Member Join Date: Apr 2008 Location: Kearney Nebraska Posts: 24 Likes: 0 Liked 0 Times in 0 Posts	Re: 12 bolt need help with I.D. I measured the housing flanges outside to outside and it measures 55 1/4 "

12-10-2009, 09:26 PM	#13
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,354 Likes: 334 Liked 280 Times in 150 Posts	Re: 12 bolt need help with I.D. My source tells me 64-67 is 56 1/2 flange to flange and 60 1/2 outside of brake drum to outside of brake drum 68-72 measurements are/is 58 1/2 and 62 1/2 68 was the transitional year so some early 68 vehicles might have leftover 67 housings anyway kdc info is still correct--Comp 387

12-12-2009, 08:31 AM	#14
stock eliminator Junior Member Join Date: Apr 2008 Location: Kearney Nebraska Posts: 24 Likes: 0 Liked 0 Times in 0 Posts	Re: 12 bolt need help with I.D. i measured the welded on flanges that the brake plate bolts too that are on the axle tubes. i guarantee it's NOT a truck rear. Last edited by stock eliminator; 12-12-2009 at 08:34 AM.

12-12-2009, 08:52 AM	#15
jimmyparker Member Join Date: Oct 2009 Location: columbus, georgia Posts: 360 Likes: 41 Liked 225 Times in 71 Posts	Re: 12 bolt need help with I.D. 55 1/4" is the flange to flange measurement for a 68-72 Chevelle or Monte Carlo housing.

12-12-2009, 09:54 AM	#16
Tom keedle Senior Member Join Date: Dec 2008 Location: Berthoud, Coloraduh Posts: 695 Likes: 13 Liked 7 Times in 6 Posts	Re: 12 bolt need help with I.D. i've got a 67 chevelle sitting out back of the shop right now BUT it's covered in that white stuff right now. got a 10 bolt in it though.. how big of a hurry are ya for measurements?or is that even what you need? i AM surpised at all the chevelle info that's out there, that there isn't any code charts...

12-12-2009, 10:55 AM	#17
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,354 Likes: 334 Liked 280 Times in 150 Posts	Re: 12 bolt need help with I.D. Go to a website CHEVELLESTUFF.COM one of the best out there gives you almost everything you need to know about deciphering GM codes on these cars---Comp 387