I've seen this discussion numerous times before, but now I have to ask...  Why does a 307 use unique frame mounts?
 
Externally, a small block Chevy is a small block Chevy.  I've swapped numerous engines over the years, the only time I've had to change the frame mounts was when I put a V8 where a 6 was.  With that said, my El is the only A-body I've owned, most of my cars prior to this were either Camaros or Corvettes and I never had to change frame mounts (except for the 6 to V8 swap).  Is the frame mount an A-body only issue?
 
Just curious, thanks.

Herb Lumpp
http://users.adelphia.net/~hlump/index.htm

 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of [EMAIL PROTECTED]
Sent: Sunday, January 01, 2006 9:58 PM
To: [email protected]
Subject: Re: [Chevelle-list] Fram Mounts

In a message dated 1/1/2006 9:54:37 P.M. Eastern Standard Time, [EMAIL PROTECTED] writes:
I know we have talked about these before but one more question.  The small block frame mounts on my chevelle are 2" tall.  I am looking at getting the big block frame mounts and the guy says that they are 1 5/8" tall.  Does this sound right?  I know that I can use the small block mounts but I just have a gut feeling that I need to use the big block mounts.  If anybody has the big block mounts can you measure them and let me know how tall they are?  Thank you and hope all of you had a happy holiday week. 
 
Ryan
Was your car originally a 307 car?  If so, then yes, you will need to change the mounts.  307 mounts are slightly taller than 350/402/454 mounts.
 
Tom

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