That is awesome. Listed for $349.00, not really much more than the Mopar CAI.

 

Sweet! Now the 3.6 guys have exhaust, intake, and throttle body. Sadly, now you are caught up to the amount of mods available for the 3.5 lol.

So who is going to be the first to get one of these?

 

I saw that throttle body on google the other day. Id like to see some dyno numbers on it before jumping in. Here's my main concern. The stock 5.7 HEMI throttle body is 75mm I believe and you can have them ported up to 80mm but is useless without power adders that require more air because the stock throttle body is plenty big. So I'm concerned that an 80mm throttle body on a 3.6 really wouldnt do anything because the engine doesn't need a hole that big. I could be wrong or getting bad info so feel free to comment if I am

 

you make a great point. Ive read your comments on the intake your about to do. I too am looking at doing one. our TB is 74mm and i think unless we make drastic changes to our intake set-up we would not get the full value of the 80mm TB. I took that note that DMAC said about trying to run it to the other side and there just isnt room over there. Does anybody know why they turned the motor for FWD vs the RWD set-up? Hemi, sounds like you have a lot of mechanical/auto knowledge its good to have your input here. I noticed that there is a lot of room from the TB to the fire wall, so I was thinking of trying a 180 (not exact angle lol) and smooth it out back towards the fire wall and have it line up at the same angle as our set-up. It would still suck, but at least its not a water slide from the TB to the filter....

 

If the engine in the FWD was set up the same as the RWD you would sit in front of the wheels. There is just no space to accommodate the drive shafts and gearbox in between the front wheels.

 

The 71mm throttle body on the 3.5 was really more of a throttle response thing than anything. I think our throttle body was dyno'd at 8 hp or something like that so you aren't talking anything too drastic, but the midrange throttle response felt better for me. I agree with the sentiment on the CAI though.

If you have room between the firewall and throttle body, could you take the intake straight down and then mount the filter down low?

 

Ok I was able to get on my actual computer and check out the 80mm ported throttle body. From what I can tell from their pics and description is that the throttle body before and after the throttle plate is 80mm and the throttle plate and area around it is slightly less. What they are doing is taking it apart, porting the throttle bore to a straight thru design and reinstalling with a true 80mm bore and throttle plate. Basically they're removing the Venturi effect of speeding up the air.

Have a friend that does machining on the side and asked him what he thought about the throttle body. We've toyed with 4.7L and 3.7L throttle bodies on the Dodge trucks. The problem with those is the Venturi effect that bottlenecks right in front of the throttle plate and then widens out at the plate. What we've done is port it just so that it has a straight thru design with a stock throttle plate. Saw a large improvement in throttle response and around 5-10 hp. The 3.7L saw about 1 mpg increase. Every test done with the 4.7L with a larger than stock throttle plate has resulted in minimal changes from the true bored stock throttle body...It just didn't need it. True bore on the 4.7L netted 68mm. Now I know the 3.6 has VVT on it and a large intake but I just think that there is no way it needs a throttle body big enough for a forced induction 5.7L HEMI. Personally I only see marginal gains if any. I may be wrong but really would like to see a dyno sheet on it before I jumped in on 350 bucks worth of throttle body.

Buss...Yeah I've done this a few times lol. Been turning wrenches 8 years now. 4 of the 8 years for Dodge. But I've been thru bolt on mods of several cars and spent a ton of time researching stuff. In fact the last daily driver I had was a 98 Neon that I had pretty much built from the ground up as a stout N/A daily driver the was bulletproof. Had to get rid of it cause I couldn't quit doing things to it. And the Avenger was a hell of a deal for 283 hp and 30 mpg...lol

 

Everyone...Check Challenger Forumz for more info on the 3.6 throttle body. One person on there has done the mod and there's some valuable information on there and lots of pics. Most important is that the 80mm measurement is actually false. The stock plate is 74.5mm and they are reusing that plate. They are making the entire throttle bore 74.5mm without the little torque steps on either side of the plate (slight ridges in the bore).

After reading the post on Challenger Forumz and looking at the pics I can change my opinion. This would be a good mod if you can get someone to port and polish it for 100 bucks or less. I don't see it doing 350 bucks of performance. I'd expect slightly better throttle response and maybe some power at wide open high in the RPM range.

 

so you are saying i can just get mine ported and polished for around 100 bucks and have the same thing that they are selling for 350?

 

From what I saw on Challenger Forumz that's pretty much correct. Looked online and saw factory 3.6 throttle bodies go for 140 ish new. Id say if you can find a shop that will true bore the throttle body then get a new one and have it cut and keep the stock one for warranty. That's what I'm considering at this point. Every shop is different but my buddy has cut them for me for 80 before.

 

Update

So after looking on other forumz about the 80mm TB it turns out if must be a good investment. Everything Ive seen has positive remarks. Almost all of them comment on how it took away the sluggishness, and improved throttle response.

 

So after looking on other forumz about the 80mm TB it turns out if must be a good investment. Everything Ive seen has positive remarks. Almost all of them comment on how it took away the sluggishness, and improved throttle response.

Good to hear! I wish there were an install guide for the 3.6 though :/

 

I'm hoping that some of those guys will be up for dynoing or running their vehicles at the track with the new TB to see how much of a difference it actually makes...still a huge investment for just throttle response improvements but there may be more there

 

I'm hoping that some of those guys will be up for dynoing or running their vehicles at the track with the new TB to see how much of a difference it actually makes...still a huge investment for just throttle response improvements but there may be more there

Yeah I got what your saying and I think someone on the challenger forumz did, but I see it as we are limited to performance mods for a while so why not. Now Im not going to pay the internet price but when I find a shop that will do it for me Im down. I just found out there are 3 dynos by me so when Im done the CAI ill run on it. Also it pointless to me if you get the TB and still have the stock intake or even anything less than 3 inch pipe.

 

Yeah, several of us 3.5 guys just sent our TBs in to be ported and polished. We actually got with the guy who made the ones that I think Modern Muscle was selling. They aren't truly larger TBs, just ported and polished ones. But they do flow a little better and make a bit of a difference.

 

Yeah, several of us 3.5 guys just sent our TBs in to be ported and polished. We actually got with the guy who made the ones that I think Modern Muscle was selling. They aren't truly larger TBs, just ported and polished ones. But they do flow a little better and make a bit of a difference.

If you dont mind me asking whats the difference between the 2?

 

If you dont mind me asking whats the difference between the 2?

What do you mean? Difference between stock and the ported TB?

 

Totally agree...The throttle has no business on a car with stock system. I'll probably be working on a TB around summer time. The final pipe that I hope to use to complete my cold air pipe should be here early in the week. I'm thinking I will break down and pay the price for the Mopar kit if something doesn't come out by late spring to complete my cold air kit. Yeah it is pricey but I'd really like to keep the clean look under the hood and building a heat shield just doesn't fit that look for me. After that I'll be looking into getting a stock TB and getting a buddy to port it out for me. Just a game of time and money at this point.

 

Totally agree...The throttle has no business on a car with stock system. I'll probably be working on a TB around summer time. The final pipe that I hope to use to complete my cold air pipe should be here early in the week. I'm thinking I will break down and pay the price for the Mopar kit if something doesn't come out by late spring to complete my cold air kit. Yeah it is pricey but I'd really like to keep the clean look under the hood and building a heat shield just doesn't fit that look for me. After that I'll be looking into getting a stock TB and getting a buddy to port it out for me. Just a game of time and money at this point.

Yeah Im going to build a heat shield but that mopar one is clean.

Yeah DMAC I understand those differences but whats the difference between a PPTB compared to an actual larger TB?

 

Lemme see if I can help. A ported throttle body is merely a true bored throttle body. Basically the throttle plate is a certain size, ours being 74.5mm. For whatever reason the manufacturers didnt make the bore 74.5 mm all the way through. To fix this they just punch the bore out to a true 74.5mm all the way through then polish it so it looks pretty. This is what Modern muscle is selling as their '80mm' throttle body. It isnt any bigger...its just the stock throttle body with a true 74.5mm bore. Now a larger throttle body is basically changing out the throttle plate for a bigger one and boring it out more. For our application its not needed without power adders. The ported throttle body will probably get marginal gains and I've heard throttle response is improved.

 

Lemme see if I can help. A ported throttle body is merely a true bored throttle body. Basically the throttle plate is a certain size, ours being 74.5mm. For whatever reason the manufacturers didnt make the bore 74.5 mm all the way through. To fix this they just punch the bore out to a true 74.5mm all the way through then polish it so it looks pretty. This is what Modern muscle is selling as their '80mm' throttle body. It isnt any bigger...its just the stock throttle body with a true 74.5mm bore. Now a larger throttle body is basically changing out the throttle plate for a bigger one and boring it out more. For our application its not needed without power adders. The ported throttle body will probably get marginal gains and I've heard throttle response is improved.

Thanks for the help.

 

there's a huge discussion going on over at the ChargerZ site about this and why a ported TB does no good or has diminishing benefits, its a long thread but has some good info in it

http://www.chargerforumz.com/showthread.php?t=132402

 

I thought this made a pretty convincing point

 

I thought this made a pretty convincing point

i thought that too, but thats how i thought they were from the factory, with one opening smaller than the other and when you have it ported you make both openings the same size, so in my mind, you start with the bottom picture and have it ported to that it will be more like the top picture

 

i thought that too, but thats how i thought they were from the factory, with one opening smaller than the other and when you have it ported you make both openings the same size, so in my mind, you start with the bottom picture and have it ported to that it will be more like the top picture

well I stand corrected haha