10 bolt diff help Options

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Guest		#1 Posted : Friday, 19 January 2007 1:12:51 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		hi guys i need some help with my diffs which is better i have a 68 camaro 10 bolt and the axels are c clip on the spline end are these better than the hk chev 10 bolts? i cannot make a choice as i want to put the better and stonger 1 in in my ht monaro im runnig a 350 with TH400 your help will help me greatly thanks

ozchevy		#2 Posted : Friday, 19 January 2007 2:14:34 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/10/2005(UTC) Posts: 495		What are the casting numbers on the Camaro diff? There are two sizes in the 10 bolt diffs 8.2" and Corperate Differential 8.5" If you have a Dana Posi-traction you will a very strong diff and this would would be the best choice in my opinion. I have a 8
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Guest		#3 Posted : Friday, 19 January 2007 2:25:37 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		the numbers are GM 8-1235542 N 87890 7282 crown wheel teeth no 40 pinion gear no 13

ozchevy		#4 Posted : Friday, 19 January 2007 3:34:41 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/10/2005(UTC) Posts: 495		It would appear to be a 3.42:1 Ratio Assembly Plant = Buick 235th Day of the year Year of manufacture 1975 542nd Casting of the day Made on the Nightshift
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ozchevy		#5 Posted : Friday, 19 January 2007 3:36:45 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/10/2005(UTC) Posts: 495		I think the other numbers are Axle codes, will check it out later
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Guest		#6 Posted : Friday, 19 January 2007 7:55:21 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		thanks ozchevy you are helping me heaps how do i tell if i have a posi tracion or not? i dont know much about these types of diff all new to me. looking forward 2 learn more thank you for your time

Guest		#7 Posted : Friday, 19 January 2007 9:11:51 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		i think i worked it out posi traction is LSD ?and the ratio what is it good 4. this diff is NOT LSD but is it stong enough for my running gear i dont want 2 waste my time is a 8.5 stronger than a 8.2?and ive been told that the c clips on the axles fall ou

ozchevy		#8 Posted : Friday, 19 January 2007 9:18:22 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/10/2005(UTC) Posts: 495		Your Camaro diff is most definately a Posi-traction, and 8.2" not a Corperate 8.5" Still a very tough unit, as it is a locking LSD. Most probably from a Z/28 or an optioned Rally Sport Second Generation Camaro. Corperate 8.5" diffs have a different rear
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Guest		#9 Posted : Friday, 19 January 2007 11:16:07 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		thank u for all your help now i can get on with it i will put it in but still unsure about these c clip axles and ratio i have been running a 308 ratio and b 4 that was a 2.78 and found thay were ok is this 3.42 close?

Guest		#10 Posted : Saturday, 20 January 2007 2:57:45 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Hey guys, When you talk about the different rear cover - is the arc 'pressed' into the cover so it sticks out? This is what my diff has & I've just noticed it's different to pic's of other salisbury's. It kinda looks like bracing. If I can figure out hoe

Guest		#11 Posted : Saturday, 20 January 2007 2:59:51 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		P.S. Can anyone recommend a diff expert in Brisbane that would be able to fit another ratio into the posi? The Beige Hornet.

Guest		#12 Posted : Saturday, 20 January 2007 7:21:21 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		hi beige hornet when i got my diff it came with 2 diff covers both chrome and both diffrent but they still fit ok 1 has a hump right were the crown wheel is , the other 1 has the same hump but on the right hand side there is a recessed rib on a angle abo

Guest		#13 Posted : Saturday, 20 January 2007 10:34:29 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		hmm.. mine has the hump to clear the crown wheeel & then has another ridge in an inverted 'v' shape that goes from the axle, to the top in the middle, & down to the other axle... looks like bracing but is stamped into the cover (not welded on)........ Wh

ozchevy		#14 Posted : Sunday, 21 January 2007 2:59:34 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/10/2005(UTC) Posts: 495		Have a look at the two photographs in the auction below. Both are 10 bolt, but two very different styles. The seller has actually worded the second style a little wrong, in the fact that they suit 82 model and later. They will also fit 79-81 Camaro with C
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Guest		#15 Posted : Sunday, 21 January 2007 6:48:38 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		yep thats the 1 with the ridge i have and my other 1 is the same with no ridge thanks this help s me can any 1 tell me the size of the uni joint these things use? and this ratio 3.42.1 is this top end ?mid range?or what? u guys are helping me and i am ver

ozchevy		#16 Posted : Monday, 22 January 2007 2:49:40 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/10/2005(UTC) Posts: 495		Your've lost me on what size uni joint. I can give you part numbers if thats any good to you. The 3.42:1 ratio is good for off the line stuff with a little change or loss at top end. I would say with the right combination of engine internals and induction
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Guest		#17 Posted : Monday, 22 January 2007 6:19:40 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		part numbers would b great , i put a 9 inch uni in the diff yoke and the uni cups dont go across to fit flush in the yoke it seemed 2 b 2 small in width?? my 350 is standard with a peformer intake with a basic cam so ive got room improve.

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