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I have 13 ram 5.7 4x4, I am pretty sure I have broken manifold bolts on both sides, 88k miles, I am gonna insist dealer fix under warranty, but all this research has me itching to replace exhaust manifold with headers. I recently replaced ginormouse stock muffler with a 14" magnaflow, sound just right. Not too loud for conversation, but growls just a bit when I get on it.
just a few questions,
1. if I go with shorties, they will bold right up to factory exhaust, right?
2. is it silly to put headers on and leave factory exhaust , except for muffler replacement?
3. Intake, I put a [email protected] CAI on my 03 4.7 with cat back exhaust, sounds like a beast, but no real performance gains, seems like a bunch of hype to be honest. My stock hemi makes the 4.7 seam like a slug. the 03 sounds like a beast though, a little too loud on exhaust, the intake sounds pretty cool when hood is open, again, I am not sold on the [email protected] or anything like it. was looking at [email protected] or Vararam. anybody have some real knowledge here? I am leaning towards Vararam, but not convinced where the cold air or the ram air is coming from on my 13 ....from pics of vararam it looks like air is supposed to come in above radiator or possible in hood seam, which has weatherstripping on my hood. if its a true air grabber or ram, then air is forced in when driving, just cannot see where this air comes from. also, since its right on top of motor its probable not cooler air, but just more of it???? [email protected] is a sealed box with factory wheel well inlet and optional scoop, my problem with that is the scoop apprears to point straight down, would prefer it to go up above bumper to creat a ram effect.

So obviously I am a undecided and not totally convinced that either mod or both together will really show real performance improvements. shorties are supposed to give 15hp or so, cai is not really gonna increase hp until you hit some really high rpm. Come on guys I want ot be convinced, just need some encouragement to drop the money into my truck.
 

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The vararam is like a huge shroud that extends over top of the radiator, so cold air from the grill is separated from the radiator and the vararam itself is insulated. There is a good 3-4" that is below top of grill but above the shroud (it dips down an inch or two right in front of radiator) to shove cold air in (cold is a relative term here in Texas most of the year). I saw one in person when I bought my AMP bed extender from HerculesHemi (found it on craigslist then we got to talking about our trucks and found out we were both on the Z).

Its a very good design but hard to really get that until you see one in person on a truck.
 

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I have the vararam and really does complement the long tube headers. The choice is yours, you will get more performance from the vararam, better sound for the s&b. Also right now there is guy on the other forum selling a set of JBA's LT's , and another guy selling a set of stainless works LT's, also a guy selling a set of ARH LT's. Don't waste your time or money on shorties.
 

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I hear it repeated over and over: don't waste time on shorties. And if you do longtubes, get that y-pipe replaced as well while they're under there.

Also, no matter which route you go, use stage 8 locking bolts/fasteners. Should never have issues with broken bolts/studs ever again, according to everyone I've ever heard/seen using them.
 
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