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Arrington 90mm throttle body

5K views 23 replies 8 participants last post by  Kjens2004 
#1 ·
#4 ·
Go for it and let us know how she feels with it...

I went with the 87mm because (A. I don't have the SRT8. and (B. I don't have forced induction.
 
#6 · (Edited)
I think 90 would be too big. 87 is the biggest they run on modified Rams (with higher OE output already). Unless you plan on being forced-fed, 90 would be too big. 85 is the largest suggest for 09-12 Rams -- unless you have long tubes + tunes. Talk to Moes. Moes knows TBs for Hemis.
 
#8 ·
The 90mm is overkill for a lot of 6.1 / 6.4s. Unless you have some heavy engine modifications and/or forced induction, I wouldn't do a 90mm.
 
#18 ·
no idea.....have a look at thefastman.com His TB's are a work of art and are CNC machined and gets a new blade to fit the new size. Ive had 4-5 of his TBs and all have been perfect. Ive never heard of Moe's.
 
#21 · (Edited)
I use the Modern Muscle units and sell them on my site. I've got my tunes set to run with these very well. Put my tune with this tb and it'll respond very nicely. you won't be disappointed. Not only is there a hp gain (those many say there isn't and its mostly true for stock pcm's or even the preloaded tunes) but there is a nice drive ability increase.

This dyno is of an 87mm unit on a '14 AWD 5.7 GC but I generally like the 85's on the 5.7 configs. I've got 3.6 throttle body's as well

https://www.facebook.com/HemifeverT...1005161992830/584860144940661/?type=1&theater
 
#22 ·
I use the Modern Muscle units

I know Moe's 87mm is just a stock throttlebody CNC ported... Now, I know MM's says its an 87mm CNC ported also, but is it a stock TB also or is there more of a difference.
 
#23 · (Edited)
They are stock units that are put into a CNC cutter. Be cautious of the straight bore designs on the larger units. I had a BBK 85mm straight bore on my wifes '10 5.7 challenger for years. Swapped it to the Modern Muscle 85mm tb two weeks ago on the dyno and picked up another 6 to 10 hp and tq over top of the BBK gains I had already had. Unless you port your intake manifold, anything over the 83mm range on the back side will be larger than the intake and disrupt flow
 
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