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I posted this in the bodyshop section and got no responses. Maybe here I will do better.
I would realy appreciate if someone with a BB in a 67 could give me a couple of measurments.
#1 From the hole where the front shock comes through the frame to the
back of the engine.
#2 From the same hole to the firewall.
I would be very grateful for this.
Kim.
 

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got a 70 can't help, sorry.
 

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Just saw your post. To clarify you want from the shock bolt to where the bellhousing meets and then to the firewall correct? I just pulled my motor but will get the firewall measurement tonight for you. There is approximately 3 inches between the engine and the firewall if that is what you are trying to figure out.
 

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On my '66, the drivers side shock to firewall measurement is 14 3/8", the passenger side is nearly 15" because the contour of the firewall is different.
 

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I got the same measurements on my 67. As Rowdy said, the firewall on the passenger side "curves" toward the rear. If you were to follow the vertical plane of the firewall down on the pass side, then the measurement to the point of that intersection is 14 3/8:.

I have a small block, but assuming the bell housing falls in the same place, I measured to the firewall from the bell housing parting seem. There is a lot of curvature on the firewall behind the engine. To give a consistent reference I measured from the top driver side trans bolt location to the firewall at the top of the throttle linkage bracket, the part the bolts fixed to the firewall. That distance is 2 1/2 inches.
 

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Ditto on the measurements straight back to the firewall. Sorry for the delay in responding earlier
 
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