| There were more modifications than might
appear at first sight. The most obvious upgrade are the completely new
headers and sidepipes. The old headers were full of pinholes and the 1-3/4"
primary tubes were too large. What I wanted was a real thru-sill 4-1 header
combined to a bulky 4" sidepipe, just like the real 427's had.
The actual header construction here is a Tri-Y (4-2-1), not a 4 -1 (the 2 lower primaries seen here are dummies). My first impression is that I got a noticeable increase in midrange torque. |
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| I ordered some necessary pieces from Martelius
Exhaust, like 1-5/8" J-bends, 2x1-5/8" to 2" Y-collectors, 2" 90
degree bends, and began cutting, welding and fitting. Finally the headers
were then Cermakrome coated for that polished aluminum look. You can see
the difference here, as the sidepipe is stainless, already turning yellow
from heat.
Inside the new sidepipe there's new inserts, and now I can open the pipe to replace the inserts, which is quite important . |
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