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0603htp 14 Exhaust Manifold Z

Moving on to the header installation, Junior unplugs the O2 sensors then removes four 15mm bolts on the crossover and four 13mm bolts on the exhaust manifolds. The two factory intermediate pipes (with the cats) can then be cast aside.
A Sixer For The Road -- Technical -- GM High Tech Performance

 Moving on to the header installation, Junior unplugs the O2 sensors then removes four 15mm bolts on the crossover and four 13mm bolts on the exhaust manifolds. The two factory intermediate pipes (with the cats) can then be cast aside.  View Related Article

 

 

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