View Single Post
Old 11-28-2018, 07:35 PM   #9
66_C20
Registered User
 
Join Date: Jul 2018
Location: Raeford, NC
Posts: 38
Re: Big Block Perches

So it looks like we have three options listed here that would work, ordering a tubular set like what I linked earlier, the motor mount perches from a square body crossmember used for disc brake swaps(they look completely different but I’ll roll with it), or perches from a 68-72 big block truck. Would it be accurate to say that all three of these options should work?


Quote:
Originally Posted by Captainfab View Post
I would use either the '68-'71 factory big block brackets and mounts, or a set of brackets and mounts from a '73-'87 C20 or C30. I have no idea about fitment of your headers., Are they supposed to be for a '63-'72 truck with a big block? On my Suburban I just used Hedman headers for a '73-'87. Of course they are long tubes. When installing a big block in the '63-'67 trucks, it is advantageous to trim the top flange of the frame as was done '68+ to clear the manifolds/headers.
The headers I have are shorties and I tried to get the smallest primaries I could to help with clearance because I knew it was going to be an issue. I don’t mind trimming the top flange of the frame but it’ll be a whole lot of trimming. So maybe using big block perches will at least help with header clearance I’m hoping so I can actually trim the top flange of the frame instead of having to hack it up.
66_C20 is offline   Reply With Quote