Firebird Nation: Cross Member/Subframe - Firebird Nation

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1970 - 1981 Pontiac Firebird
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Cross Member/Subframe Rate Topic: -----

#1 User is offline   dlfranci 

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  • City:Anthem
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  • Year: 1975
  • Make: Pontiac
  • Model: Formula 400 Firebird
  • Engine: 400
  • Transmission: Turbo 400

Posted 07 November 2010 - 08:29 PM

I'm getting ready to attach my subframe to my 1975 and I have a couple questions. First, is the crossmember the only other thing I need to attach at the same time, or are there other things I should make sure to attach before installing? Second, I'm looking in my service manual and it says in addition to the crossmember there is a "retainer and insulator", what are these items? Am I missing something or do I just bold on the cross member. Finally, does anyone have some pics so I can visualize what the attached crossmember looks like prior to installing. Thanks for any help!

#2 User is offline   TransAmer99 

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  • Year: 1980
  • Make: Pontiac
  • Model: Trans Am
  • Engine: 1972 Pontiac 400
  • Transmission: TH-350, 2.41 rear

Posted 08 November 2010 - 04:50 AM

Apologies that I can't find any 'under car' images with just the subframe in place (yet).
Posted Image

Rest In Peace, Pete, a.k.a. "Brother Rat" and Jay, our Firebird Brother!
Y'all two keep each other out of trouble up there, okay?

#3 User is offline   72 blackbird 

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Posted 08 November 2010 - 09:03 AM

I personally would clean and coat the subframe and front suspension pieces w/ POR-15- it can be brushed on and dries w/ a gloss finish. It's also alot tougher than regular paint and will still look good after driving the car. The subframe is heavy- alot of DIY'ers assemble it, put wheels and tires on it, and roll it over to their shell to bolt on.


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