Are all 7.5 carriers the same?
#1
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Car: 86 Firebird
Engine: LG4 feedback controlled 350
Transmission: used to be T5 now T56
Are all 7.5 carriers the same?
I know GM went from 26 to 28 spline axles and carriers in 1989 and 1990.
But, will a 7.5 inch, 26 spline carrier from a late 70's G Body (Cutlass, Monte, Elky etc) work in a 1986 Firebird?
Any other vehicles come with something like that? I am doing some salvage yard shopping, just want to know what all I should be looking at.
I know to avoid the Gov Loc. Were there any S-10's or Blazers that had a "real" posi, or were all of them Gov Loc?
Thanks!
Matt
But, will a 7.5 inch, 26 spline carrier from a late 70's G Body (Cutlass, Monte, Elky etc) work in a 1986 Firebird?
Any other vehicles come with something like that? I am doing some salvage yard shopping, just want to know what all I should be looking at.
I know to avoid the Gov Loc. Were there any S-10's or Blazers that had a "real" posi, or were all of them Gov Loc?
Thanks!
Matt
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
i believe that any 7.5" carrier will fit into and 7.5" housing, but there is also a 7.625 carrier that was used in these cars as well so be careful
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Car: 86 Firebird
Engine: LG4 feedback controlled 350
Transmission: used to be T5 now T56
What all is different between the 7.5 and 7.625? This is the measure of the ring gear, correct? Will a 7.625 carrier fit into a 7.5 housing and vise versa?
I have a Richmond Gear ring and pinion for a series 2, 7.5 or 7.652 carrier. I am trying to find a junkyard posi to match the ring and pinion.
I guess my question is can this be done and what kind of problems should I expect to run into doing this?
I have a Richmond Gear ring and pinion for a series 2, 7.5 or 7.652 carrier. I am trying to find a junkyard posi to match the ring and pinion.
I guess my question is can this be done and what kind of problems should I expect to run into doing this?
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
As long as the gears match the carrier series and you use the correct spline count for the axles, then yes a carrier from any other 7.5/7.625 diff will fit into your 7.5 housing.
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
I thought those late '70s cars used 8.5" 10 bolts. Be sure it's a 7.5". Also, would those cars have even had a posi??
4th gen posi's work, but you'd need new axles with 28 splines.
4th gen posi's work, but you'd need new axles with 28 splines.
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
the ring gear will fit on either carrier . i know that the inside, where the posi or spiders gears fit are different sizes between the two, but as for the overall size, bearing to bearing, im not sure
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Car: 86 Firebird
Engine: LG4 feedback controlled 350
Transmission: used to be T5 now T56
Lots of gear dealers advertise 7.5 and 7.625 for "all GM vehicles 1977 and up". I would have guessed something came with a similar rear. I don't know though.
How can I identify a 7.5 inch carrier from a 7.625 carrier?
Thanks for all the help, thus far!
How can I identify a 7.5 inch carrier from a 7.625 carrier?
Thanks for all the help, thus far!
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#9
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Car: 86 Firebird
Engine: LG4 feedback controlled 350
Transmission: used to be T5 now T56
Right. Obviously not ALL GM rears from 1977 on up were 7.5 or 7.625. But the gears they are selling will fit a > 1977, 7.5 or 7.625 inch, 10 bolt rear end.
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
"all GM vehicles 1977 and up"
...." that use the 7.5/7.625" rear".
You don't have to worry about which carrier it is unless you're trying to put a Powertrax or similar into it; they're all the same on the outside (i.e. they all fit the same into all housings). You DO however have to worry about getting a 26-spline (88-back) or 28 spline (90-up) one, as appropriate for the rear you have.
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