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turbine housing question?

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Diesel-Dan Fass need help!!!!!

06 2500 4X4.do I need to replace exhaust from

Has anybody tried a 64. 70 or a 66. 70 and compared it to the . 80 housings as a single? All i see is everybody useing the . 80 housing. My thought was to use a . 70 housing and mod the gate to flow more out during the w/g cycle. Or maybe even trying a external gate. TIA.
 
propensity to surge would definately be amplified, but you've got the breathing mods, so it might work out alright...



edit: I thought you had a ported head and a cam... without one or both of those, I wouldn't put the small housing on a 66
 
I should change my sig. My old my how things change. Its pretty close to stock. Long story that most would not believe.
 
I wouldn't do it... you're basicly moving your surge line to the right... the 66 is already trying to move more air than your engine can injest w/ even an sps hot side... with a smaller turbine wheel and even smaller housing, it's going to be trying even harder to move air at RPM where your engine simply can't accept it
 
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