Transmissions and DrivetrainNeed help with your trans? Problems with your axle?
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i checked the #s on my rear end and it had 6HF which came up as an 88-89 3.08 posi. i thought it was a standard 3.23 because thats what should have come on it. the person that had it before me had a crate motor and a flowmaster exhaust so they might have changed the rear end too. how can i be sure its a posi? when the tires spin usualy both of them spin but not all the time if there is sand or something on the road making it slipery. i'm going to change the gear oil soon so what should i look for when i take the cover off?
__________________ 84 z28
87 2 bolt 350
vortec 062 heads, 9.5:1 comp
performer rpm intake
crane 282 energizer cam(
226 at .050, .470 lift, 106LSA)edelbrock 600cfm carb
flowtech headers with stock design y-pipe(switching hedmans soon)
th350 trans with B&M torkmaster 2400 stall
stock 3.23 open rear
If you look at the carrier, a posi will have pre-load springs in the center, an open rear will not. The cross pin is missing from this picture, but it shows the pre-load springs.
P.S. disregard the red arrow. Thats pointing to the C-clip which I was highlighting for a different discussion.
__________________ 1991 Trans Am WS6 Convertible,
1987 Trans Am GTA hardtop
1987 Trans Am CC1, LS1/T56 AFR 205 heads, Comp Cams, LS6 intake
2005 Honda CBR 600RR
2007 Yukon XL Denali
2007 Saab 9-3SS
Are the springs you mentioned the ones outside edge of the hole in the carrier? namely like the one underneath the red arrow? My carrier has the outer springs but a larger metal cross pin lookin thingy is in the way of the rear springs. Any help would be appreciated - I am just tryin to find out if I have an open rear like i orgionally thought or the infamous brokeass posi.
That's who made the GM OEM differential. Look around on their page, there's a wealth of info; they have a trade-in program, they sell parts, there's rebuild instructions, etc.
__________________ "So many Mustangs, so little time..."
Can over size rims and tires cause posi to not function correctly? Right now I have 275/60-15s on forged steel rims (beefy MoFos). Could that be the reason my posi does not function?
