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From Eric 523's 3.6 race car build thread, obviously cat free with straight pipes.
Originally Posted by BYprodriver
Wow very impressive hanging with the big boys! Nice strong finish!
What size primary pipe on the headers?
The primaries start at 1 7/8'' and step to 2''. A little large for the current motor but I have another one in the works A 3.8L that may end up closer to 4.0L...
Also, I don't worry much about low end torque because the car never gets below 5800rpm or so with the short gears.
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