69SYC Rear Setup options....

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Sep 12, 2011 | 08:15 PM

69SYC

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From: Cloudcroft NM, Ulaanbaatar Mongolia

69SYC Rear Setup options....

Rear.. I need help or ideas, Truck gearing and suspension I'm pretty handy but for cars I'm in the dark.. My GTO had a 10 bolt 3:90 posie. Only took it apart to replace a seal... Setting up backlash, pre load, contact pattern is not a problem i have setup countless diffs (trucks and equipment) but need a little direction on where to go for this one.. I believe it has the 8.2 open 10 bolt (6 cylinder) I think an 8.5 posi 10 bolt will suffice?? Have a hard time justifying $1500 for a 12 bolt without brakes... especially when a C4 Dana 44 with IRS is the same price.. Im looking at either a 10 bolt with a good sway bar or a ford 9" also with a good sway bar.. 4 link is a little pricey so maybe caltracs?? Please help out here this is my first rodeo setting up a suspension and axle package for a car... Input is greatly appreciated thanks

Sep 16, 2011 | 12:38 PM

68 SS

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From: Tennessee

I am running a 9" caltracks mono leaf split springs and bars I have seen the same set up 60 ft in the 1.20's. Super stock guys have used them for years with great success as well.

Sep 16, 2011 | 01:11 PM

whytryz28

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From: Hawaii

I had the same 8.2 in my 69, ran well no problems. Upgraded to the 2nd gen 8.5 rear with 3.73 gears. I went from mono to multi leafs (GW)

Sep 19, 2011 | 09:26 AM

69SYC

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From: Cloudcroft NM, Ulaanbaatar Mongolia

Quote:

Originally Posted by 68 SS

I am running a 9" caltracks mono leaf split springs and bars I have seen the same set up 60 ft in the 1.20's. Super stock guys have used them for years with great success as well.

Quote:

Originally Posted by whytryz28

I had the same 8.2 in my 69, ran well no problems. Upgraded to the 2nd gen 8.5 rear with 3.73 gears. I went from mono to multi leafs (GW)

Awesome thanks for the replies, How much HP/TQ were you throwing at the 8.2? Any idea what it will take? I have a couple options 1 I can throw about $800 at the 8.2 for the gears, posi and disc brakes and worry about it twisting up. Option 2 I have an 80s impala station wagon with i think an 8.5 in it. I could have the perches re-welded and throw about $1000 at it with a little more piece of mind, Or 3 i have a couple 74-78 ford F150s with 9'' i believe 31 splines I could also go with but its a little more expensive for that setup.. Would you do the 9'' again? Would you reccomend the mono leaf split springs? I lean more towards multi leaf but I have no idea I'm biased in truck experience.. Thanks for the replies again inputs appreciated.

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