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#1
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Rear Axle Width
Does anyone know the stock rear axle width (wheel flange to wheel flange) of the stock Firebird? I have acquired (2) Firebirds with Ford 9" rear axle assemblies and I need to figure out if they are stock width.
Thanks, Eric
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"Everybody has a plan until they get punched in the mouth" noted philosopher Mike Tyson Life begins at the end of your comfort zone. “The mind, once stretched by a new idea, never returns to its original dimensions.” |
#2
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I can measure this weekend got the 78's original on a dolly. I know axle length is 31 1/8".
I've got a 9" housing supposed to be for one I can measure too.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#3
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Had to go back to office early today so did not get it measured have to go to shop Wed so will get them measured then.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#4
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Axles are slightly different length between drum and disc, cant recall if that is carried to the mounting faces or not.
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#5
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Main thing I found disc vs drum is the brake pilot is longer on disc to locate wheels with the thicker rotor vs drum.
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#6
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I have a Firebird 8.5 drum brake rear axle sitting in the back yard, if Skip doesn't get the measurement, I can probably do it before we get our predicted 5 inch snowfall on Wednesday.
Eric, you want flange to flange? Mine still has wheels attached so I'd have to remove them, or just get a close enough measurement. |
#7
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I'm going to the shop on Wed to cover the new well I finally got put out there this year. We're supposed to have 20s this weekend.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#8
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Skip, 61 5/16" outside to outside of each brake drum/wheel mtg surface is what I've come up with in the past. Mentioned this in one of Eric's other posts.
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Buzzards gotta eat... same as worms. |
#9
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Thanks OPH, I really didn't want to crawl around in the snow to get the measurement if I didn't have to...............
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#10
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Thanks everybody!
Eric
__________________
"Everybody has a plan until they get punched in the mouth" noted philosopher Mike Tyson Life begins at the end of your comfort zone. “The mind, once stretched by a new idea, never returns to its original dimensions.” |
#11
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Backing plate flanges 55 7/8". On the 9" and the factory 78 10 bolt. And the 61" looks close as I could measure on the 78 at the drums.
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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