Supercharged111
Truly Awesome
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So that leads to another question, what diameter is the 5.7 K1500 exhaust manifold? Are they also bigger on the K3500s and Express vans?
Not sure, but they all belong in the trash. Do yourself a favor and at least get some shorties. The manifolds are not 3", not even on the 454, that's why the first little bit of piping is smaller than 3". I know for the 454, I can get shorties and short sections of front piping to weld onto the stock stuff and bolt to the headers. That's exactly what I intend to do.