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Discussion Starter · #1 ·
how hard is it on a scale 1 to 10 to change my 12v exhaust manifold thanks in advance guys
 

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Discussion Starter · #4 ·
alright thanks guys that helps alot
 

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THE Hood Stack Guy!
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If you start realy throwing some parts at the truck its a 10. Its worth the money if you need it (pulling truck, dyno or drag racing). I would have to guess you wouldnt see too much if your not in the 600 range. Mines only 400 but I noticed a big difference, but its a real unique set up.
 

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If you start realy throwing some parts at the truck its a 10. Its worth the money if you need it (pulling truck, dyno or drag racing). I would have to guess you wouldnt see too much if your not in the 600 range. Mines only 400 but I noticed a big difference, but its a real unique set up.
Are you actually implying that an aftermarket exhaust manifold will net a noticable power gain?

And he asked about the difficulty of installing it, not if it was worth it
 

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THE Hood Stack Guy!
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Sorry read it wrong, been a long weekend at TS!

Not sure if it would gain power or not, I guess it could but probably not much. I did notice a lot better spool up and throttle response though.
 

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I DONT BELIEVE IT!
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I dont mean to high jack this thread but isnt it the same as puttin a header on a gasser?:T::lol3: I know dumb question just i would like to know
 

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Even the aftermarket manifolds are manifolds. The exhaust is still shoved into a log type dsign and then through a restrictive turbine wheel/housing. The pressures in the exhaust manifold can be in the triple digit range, not that it makes a difference but it hurts hp. A few companies make headers for diesels but the main benefit is slightly quicker spool and lower underhood temperatures.

The only real reason for the manifolds is to reduce the shrink/swell effect that is common in stock manifolds and the reason for the 2or3 piece designs of aftermarket manifolds. The stock manifold can shrink enough that the bolt holes won't line up with the head, or if your unfortunate enough it will shrink while on the head and break the mounting ear in the head. Loosening the mounting bolts periodically (every 6-months or more) and then retoroqeing allowing the manifold to shift helps prevent it from cracking the ears on the head.
 

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I put a ats on mine and if I were to do it over I wouldn't have. Its funny that every part for sale starts with it will drop your ets add hp ,Id rate install at a 2
 

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Well I'd buy that ATS off you :)

And I agree it is amazing how good advertisements make a product look
 
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