Looking to decode a 283 motor

1-bad-57 · Veteran Member

Looking to decode a 283 motor

kelico · Poncho Master!

this is a great source for ya.

http://www.nastyz28.com/sbchevy/sblock.php

T37MAN · Veteran Member

i cant seem to find out what year or car this 8.2 posi rearend came out of, i took the 10 bolt cover off and she's a posi with the S spring style, and the carrier bolt's are "get this" 3/4 bolts, i got these #s off the back of the pumkin 407296, and on the other side of that was # BD and on pass axle tube was SB 0105, and these letters were beside a little wagon wheel looking thing - CFL 1 .but i cant find specs here's a pic with cover off ,please send info if you can thanks,

67Poncho · Uber Guru

T37MAN wrote:
i cant seem to find out what year or car this 8.2 posi rearend came out of, i took the 10 bolt cover off and she's a posi with the S spring style, and the carrier bolt's are "get this" 3/4 bolts,

And remember, the 3/4" head bolts are LEFT hand thread......... There should be an L stamped on there...

1-bad-57 · Veteran Member

Thanks

T37MAN · Veteran Member

as in left hand to tighten ?, and whats the L for, do you know what this rear is from orig, or what year

67Poncho · Uber Guru

T37MAN wrote:
as in left hand to tighten ?, and whats the L for, do you know what this rear is from orig, or what year

Just for left hand thread! Left to tighten, right to loosen.... The spring is another way to tension the plates... Same difference as the 4 individual ones... Not sure of the years but have seen them is axles I disassembled... Some of the newer ones will have cones as well.

-- Edited by 67Poncho on Thursday 12th of July 2012 10:56:39 AM

T37MAN · Veteran Member

thanks for the reply, i can't see an "L" ant where just yet but do you know anything about this rear ?, or what year / or car it may have been pulled from, i ran the #s i did find and still cant gather any info oh except that BD may be camaro related in which i did not think they were a coil spring car or 4 link, all i know is that its a 8.2 posi with the S type spring , i thought the older posi rear's were 4 spring's and plate's, and what gets me is these massive 3/4 carrier bolts, whats the deal on those, all i have heard is 7/16 / 3/8 or 9/16 not big kahoenah 3/4 bolts, im almost thinking im back to square because now im wondering can i put that 3/4 bolt 8.2 carrier in my 9/16 carrier housing ? i would be greatfull for some imput on this matter, thanks

T37MAN · Veteran Member

i guess were all stumped, i dont know of any cars that came with an 8.2 posi 2:73 gears,because the older cars mostly had open 8.2 in them,and it cant be from somthing sporty in that era cause its got 2:73, and that you wont find in a Goat / 442 / so i wonder , not to mention the 3/4 head bolts ?