Hi Can anybody tell me what the width should be of the rear diff in a 66 Acadian ? Say backing plate to backing plate ? And did any come with a 12 bolt ?
Picked up a project car 66 SD and it has a 12 bolt in it
Just looking in the 66 brochure and only lists three engines. Seems hard to beleive that no lower performance 327 was available. Any Acadian experts out there that could verify if this is true ? Maybe yours is a L79 car. Or could the 12 bolt be ordered with the 283 ?
195-HP ECONOFLAME V8; 283 cu.-in. displacement, compression ratio 9.25:1. V8 performance and high economy. A full-flow oil "filter, positive crankcase ventilation and an oil-wetted paper element air cleaner are other features. Two-barrel carburetion.
350-HP SUPER ECONOFLAME V8; 327 cu.-in. displacement. The compression ratio is 11.0:1, carburetion 4-barrels.. Hydraulic valve lifters are standard on the 327 V8.
I am crossing my fingers that it just might be, I was really surprised to find a 12 bolt in it and it does not appear to have been modified and put in brackets etc, look like stock type welds etc.
Have to do the GM Documentation this week....not knowing is eating at me
Just from reading the brochures on file, the 275 hp 327 was new for 67 and not available for 66. 67 had the 250 and 275 hp 327 options. 66 had only one 327 option the 350 hp. Looks like 66 was kind of a strange year for engine optons. 66 had only three engine options(1 six a 283 and a 327) while the 67 had 5. (2 ea six's a 283 and 2 ea 327's) .
I just find it interesting that 65 and 67 had 5 engine options while 66 had only three. Just wondering what happened in 66 for that to happen ?
-- Edited by Beaumont4008 on Sunday 18th of July 2010 11:55:31 AM
Thanks for the replies Engine options for 66 is interesting Back years ago the guys that had it were pretty hardcore hippies, not that I wasn`t but I am not sure they would`ve known a 283 from a 327 or looked into it................so I am going to see if I can find any dates or markings on the diff....going to have to send for gm docs, driving me a little bonkers not knowing............funny before didn`t seem to matter what it was now my curiosity is killing me
Hi Can anybody tell me what the width should be of the rear diff in a 66 Acadian ? Say backing plate to backing plate ? And did any come with a 12 bolt ?
Picked up a project car 66 SD and it has a 12 bolt in it
Should be some letters and numbers stamped on the passenger side axle tube that can help date the diff and identify if for a acadian/chevy ll car. Also the casting number on the centre section might help.
Rear end appears the right width but... But I see the main brake line cut on the diff and the one in the car appears in tacked so I will try and find codes but I am thinking maybe it was swapped in,but if it was they didn`t move the leaf brackets so it must have come from a very similiar body style also on the pass side of diff on the lower tube I see a braket has a cut rod with bushing in it still, but I would assume it was some type of traction bar from the factory in whatever vehicle the diff come out of I looked quickly but see no brackets on the frame were such a bar may connect to
Anybody known anything about such a factory bar traction type looks factory weld etc. ?
Thanks again for all your help
Part was hoping L79 car (don`t think so though) but the other part not.....then I can just build it the way I want....if it was L79 in my mind I would be forced to period correct restore
One thing you can check is the fuel line from front to back. A 283 car in 66 would be 5/16" and a 66 Acadian 327 car would be 3/8" inch since as stated, the 327 car would have to be an L79 car.
And as stated, I don't think GM ever offered an L79 in front of an auto trans even in a Corvette. Certainly not in a Nova/Acadian.
If you still need a measurement, I can get it off a 65 diff I have sitting here (10 bolt that is!) but it should be the same as a 12 bolt.
-- Edited by Carl Stevenson on Tuesday 20th of July 2010 11:17:13 PM
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
I will check the fuel line that si a good idea Ya diff measurement should be the same Don`t think this one is factory but if it fits right then perfect I might just be asking for a few meaurements I should pull wheels and do a full width measurement
Thanks for the reply Thanks for showing me how to add a pic on the other post too
