89comanchekitch
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exhaust upgrade
89comanchekitch replied to 89comanchekitch's topic in MJ Tech: Modification and Repairs
I was planing on running the stock intake and I have a new stock head -
I am rebuilding an 89 Comanche with a 4.0 straight six. The engine is getting built from the ground up(middle of the process now), and i need help with header/ exhaust tube size. It's bored 60 over with a comp cam and the goal is trail rig. What would be ideal size for max horse and healthy for the engine? thanks!