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05-10-2010, 10:40 PM
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#1 |
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Registered User
Join Date: Apr 2010
Location: N.Billerica Ma
Posts: 3
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Big block exhaust???
Hi everyone, I'm new to the site. I am restoring a 69 3/4 ton 4x4.it has a 4 speed (sm465). Dropped in my 454 with exhaust manifolds. Left manifold is blocking access to anchor clutch linkage to motor.Do i have to use headers and if so what would be best?Any help would be greatly appreiated.
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05-11-2010, 07:37 AM
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#2 |
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Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,253
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Re: Big block exhaust???
I've never done this swap but realize that there are exactly ZERO factory 67-72 pieces that fit this application. The General never made a big block 4x4 until after 72. You may be able to find later 70s square body manifolds that work but I think most guys run headers when they do this swap or they have to "trim" the frame around the exhaust manifold.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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05-11-2010, 09:04 AM
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#3 |
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Registered User
Join Date: Apr 2010
Location: Jeffersonville, Indiana
Posts: 136
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Re: Big block exhaust???
Do yourself a favor and buy good set of headers. I have a 454 in my 71 4x4, and its a dream to work on with headers. Had manifolds on my 70, and it sucked!
Last edited by 1quik70; 05-11-2010 at 09:04 AM. |
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05-11-2010, 07:02 PM
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#4 |
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Registered User
Join Date: Apr 2010
Location: N.Billerica Ma
Posts: 3
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Re: Big block exhaust???
Thanks guys. I'll be ordering headers tonight. I hope clutch linkage clears.
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