C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Pre-Cat removal

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Old May 16, 2009 | 10:32 AM
  #21  
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jeffp1167
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Originally Posted by Cool427shark
+1, this works and is very affordable..
only downside is the drone noise. but my next step is a precatless y-pipe and try and weld the shells on the pipe for a visual pass.
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Old May 16, 2009 | 11:31 AM
  #22  
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I'm curious about mixing the 2 1/4 and 2 1/2 pieces? I assume that the 2 1/2 y-pipe will bolt to the stock exhaust manifold fine based on the flared fitting?

Then I ca get a replacement main cat with 2 1/2 pipes, so that will bolt up great to the front y-pipe.

But what about the rear? Will the 2 1/4 stock rear y-pipe be OK on this new cat????
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