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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


Need measurement between frame rails where rear crossmember is at

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Need measurement between frame rails where rear crossmember is at Empty Need measurement between frame rails where rear crossmember is at

Post by ROCKETQUEENONE Fri Apr 27, 2018 6:11 pm

Would somebody please give me the measurement between the frame rails where the rear crossmember is at. Fuel take tube comes up right by it. I have to weld a different rear crossmember in using what's left of my original due to a impact 5 years ago. I

Thank you!!
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Post by Joe73 Fri Apr 27, 2018 6:41 pm

If your referring to the rear crossmember (above the rear axle), I have a measurement of 42 3/4" in front and behind of the crossmember. That measurement is inside to inside of the frame rails.

Please remember, my car is a 73, so the rear part of the frame is different than 74-77. It shouldnt matter but thought I'd mention it.
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Post by REVINKEVIN / Mr. 600+HP Fri Apr 27, 2018 7:31 pm

Hey. What year is your car? I have my 1976 Laguna in my garage right now with the gas tank out so taking a measurement would be real easy.
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Post by Limey SE Fri Apr 27, 2018 8:01 pm

REVINKEVIN wrote:Hey.  What year is your car?  I have my 1976 Laguna in my garage right now with the gas tank out so taking a measurement would be real easy.

Rocketqueen needs this one measured

Need measurement between frame rails where rear crossmember is at 110

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1977 Chevelle SE x2
One Mild original
one Wild NON original
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Post by Joe73 Fri Apr 27, 2018 8:32 pm

My 73 is 45 1/2" outside edge to outside edge of that rear crossmember. But don't forget I don't have rear shock mounts on a 73.
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Post by REVINKEVIN / Mr. 600+HP Fri Apr 27, 2018 9:08 pm

I just measured what you have in the pic Limey.  From the outside edge to the outside edge mine is exactly 47.5 inches.  I can measure anything he needs back there right now.  

Hold on a second. I measured the mounting edge to edge.  I see in the pic you only want the frame itself?

Well, that's the only measurement I can make an get it perfect.  If I use your pic and try to do center to center I will have a variation.

I see the diff now, the bumper shocks are on in that pic. I took mine off to use the "suck that bumper in" brackets I got from the guy from Canada.
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Post by ROCKETQUEENONE Sat Apr 28, 2018 1:36 pm

I have a 77 442
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Post by REVINKEVIN / Mr. 600+HP Sat Apr 28, 2018 4:05 pm

Lucky man. I like those. I also spare frame that I can measure tomorrow. All I need to know is what you need to know.
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