OK all you chevelle guys, heres one. According to the web site( chevelle stuff on the web) the SS option did not include a 12 bolt rearend,----sooooo were some SS cars produced with the HD 10 bolt? give me some input! Sorry ment to include that this is for the 69 SS only

OK all you chevelle guys, heres one. According to the web site( chevelle stuff on the web) the SS option did not include a 12 bolt rearend,----sooooo were some SS cars produced with the HD 10 bolt? give me some input! Sorry ment to include that this is for the 69 SS only

Was this http://chevellestuff.com or some other web site? If you read this on Chevellestuff.com can you tell me what page says the SS option did not include a 12-bolt rear end?

69 SS396s came with a 12 bolt as standard equipment. What was not standard was positraction. Posi was an option.

Let Dale know where you found this erroneous information. Chevellestuff.com is his website and he will make any corrections needed.

according to the chevellestuff web the 69 SS option included the 396 325hp engine black accented grille, special hood ornamention and suspension, sport wheels and wide ovals and power disc brakes and special HD 3 speed transmission. This is found in the section called Is it an SS 396. Nowhere does it state that a 12 bolt was included in the SS package. I always thought it was but now I don;t know.

The use of 10 or 12 bolt was dictated by the engine (and in some cases by other option packages). As all `69 SS's were 396's, all `69 SS's would have had 12 bolts.

Thats what always made sense to me until I couldn't find the 12 bolt as part of the SS option on the chevellestuff web. It was also assumed that all 396 cars that came with a manual tranny were 4 speeds but they wern't, the 4 speed was another option

You're correct the page doesn't specifically state the SS396 option came with a 12-bolt but as noted above, the engine dictated the rear end. See http://www.chevellestuff.com/1969/power_teams.htm for more on that.

OK < I looked at the page and unless I'm missing something it doesn't tell you which is 10 or 12 bolt also it shows the 396 being available with all of the axles ratios shown straight across the page economy standard and performace

While you're correct it doesn't specifically state which is a 10-bolt gear ratio and which is a 12-bolt ratio, certain ratios were only available in a 10-bolt and certain ratios were only available in a 12-bolt. Only three ratios offered by the factory came in both, the 2.56, 2.73, and 3.55. All other factory gear ratios were unique to one of the two sizes of rear ends. See http://www.chevellestuff.com/qd/generic_rear_axle_info.htm.

In all of the "Is it an SS396?" or like pages from other years, the focus is on what separates a factory optioned SS, SS396 or SS454 from a simillarly equipped Malibu, or 300 Deluxe in 1969.

I assumed, maybe wrongly so, that enthusiasts would realize that any SS-, SS396- or SS454-optioned Chevelle would, due to the engine involved, be equipped with a 12-bolt rear end. The mere presence of a factory installed 12-bolt does not indicate an SS but, certainly, the presence of a 10-bolt would indicate the car was not born as one.

I'll revise the pages to clarify. :thumbsup:

Here is the chart in the 1969 Features & Spec. Manual concerning included equipment with V8 engines.

http://lh4.ggpht.com/_aZniZlzG90Y/Su7bmzzaSsI/AAAAAAAAEIQ/0a7JSMLePcI/s800/IMG_3987.JPG

Note the 5th line.

Dan

I updated the 1969 page and added

"All SS396-optioned Chevelles came with a 12-bolt rear end but Positraction was still an option; an open rear end was standard. However, a 12-bolt rear end, as well as Positraction, was available on non-SS396-optioned Chevelles as well so the presence of a 12-bolt (with or without Positraction) is not an indication of a 1969 SS396-optioned Chevelle."

Better?

While you're correct it doesn't specifically state which is a 10-bolt gear ratio and which is a 12-bolt ratio, certain ratios were only available in a 10-bolt and certain ratios were only available in a 12-bolt. Only three ratios offered by the factory came in both, the 2.56, 2.73, and 3.55. All other factory gear ratios were unique to one of the two sizes of rear ends. See http://www.chevellestuff.com/qd/generic_rear_axle_info.htm.

In all of the "Is it an SS396?" or like pages from other years, the focus is on what separates a factory optioned SS, SS396 or SS454 from a simillarly equipped Malibu, or 300 Deluxe in 1969.

I assumed, maybe wrongly so, that enthusiasts would realize that any SS-, SS396- or SS454-optioned Chevelle would, due to the engine involved, be equipped with a 12-bolt rear end. The mere presence of a factory installed 12-bolt does not indicate an SS but, certainly, the presence of a 10-bolt would indicate the car was not born as one.

I'll revise the pages to clarify. :thumbsup:

Not to get off track here but if your info is true and I'm sure it is then the guy on here that said my 69 SS BB with an open rear end/ 12 bolt /2.73 probably was not original and from a Malibu , could be very incorrect?????? :(:sad:

Not to get off track here but if your info is true and I'm sure it is then the guy on here that said my 69 SS BB with an open rear end/ 12 bolt /2.73 probably was not original and from a Malibu , could be very incorrect?????? :(:sad:

Not necessarily, the 12-bolt 2.73 is shown as the standard ratio on the base 396/325 as an optional ratio w/TH400. While just about any available ratio could be ordered, I don't see a "recommended" 12-bolt 2.73 behind any small block.

If you look at the Power Team chart on page http://www.chevellestuff.com/1969/power_teams.htm you'll see 2.73 for small blocks as well as the 396/325. Most available ratios on the small block engine/trans combinations are easily identified as 10-bolt such as the 3.08 or 3.36. While the 2.56 and 2.73 came in both 10- and 12-bolt versions my take is those (2.56 & 2.73) are 10-bolt versions when shown with other 10-bolt gears.

Thanks for all the info guys!!

Some confusion usually occurs from people equating 12-bolt = Performance...

But its really 12-bolt = Heavy Duty

Here is the chart in the 1969 Features & Spec. Manual concerning included equipment with V8 engines.

http://lh4.ggpht.com/_aZniZlzG90Y/Su7bmzzaSsI/AAAAAAAAEIQ/0a7JSMLePcI/s800/IMG_3987.JPG

Note the 5th line.

Dan

That appears to imply that all '69 Chevelles got a 12 bolt rear end, except for the ones with a 307...:confused:

EDIT: Me = stupid. But still, all non-307 cars equipped with a manual transmission got a 12-bolt rear?

Some confusion usually occurs from people equating 12-bolt = Performance...

But its really 12-bolt = Heavy Duty

I was just going to say the same thing. In a nutshell, all SS cars got a 12 bolt rearend. But like whats already been posted. A cutomer would have to pay extra to get a posi with that 12 bolt.

When I got my 66SS in the early 90s. I didnt find out until years later that posi was an option. I had always thought before that, that posi was a standard part of the SS package.