here are some pics of the throttle body before and after if anyone is interested in swapping them out

local://upfiles/31284/99D5E6B3CFE94007871E9EAFEBB1DA92.jpg

Thanks man...

That's what I needed to see....

Awesome.

its well worth the money

Do you feel a difference driving?

Yep. My wife feels like she's going to throw her back out when she drives it. The first time she drove it, I asked how it went and she said, "Aside from the fact that I almost ended up with whip lash, it drove great". That might also be from the Jet Chip that's installed.

Superdak, How difficult was the installation? I’m not what you call a skilled mechanic… I can change my oil and I did my K&N intake install, but that would be the limit to my experience. Would you say I’d be better off taking it in somewhere to have it done?

hell no. simple. remove the k/n. this will give you the full acces to the three screws that hold it to the intake manifold. remove the wiring harness from both sensors and unscrew tb. take of the sensors from the factory tb and install them on the new tb. screw new tb onto intake manifold and reconnect the wiring harness. a matter of 30 min. thats it. if you look at the pic. it shows you the two sensors. it is easy

OOO :-D... I think I've found my next Performance Mod :-D [sm=badbadbad.gif]

I just was looking at throttle bodies. What size did you get? I have seen 70mm and 72mm at krc web site.

I read somplace that 70MM is as large as we want to go with a N/A set up... anyone back this up?

Cool... I guess i know what I'm buying myself for my BDay! Thanks for the advice !

Ya Eric, its from the Fastmans website...

i went with the 70 mm because of my cam kit. but you guys just need the 68 mm that is more then enough to have fun with

I'm a tad confused. According to the fastmans site we have 68mm throttle bodies. I know he said its not a true 68mm its 3mm smaller actually according to him. Is this true? Has anyone measured the throttle body on the 4.7L?

we do have the 68 mm but it is coned. if you were to look at a ice cream cone it is bigger at one end then the other. thats the way are tb are. what dan does is makes the tb the same size from frt to back. look at a coke bottle as the same way. bigger at the botom then the top. now look at a coke can. it is the same size top to botom. he removes that restriction . to make it the same size. you will notice the difference once it is removed.and you have them side by side.

My question is this... Does it hurt to have a more free flowing t.b.? for instance, does it hurt to have a 70MM if we only need a 68MM?

I'd assume with it being bigger, it may cut down on low end torque...

just an uneducated guess though.

yes it will. if you go to big then you wil lose a lot of low end grunt. but in the higher rpm range it will be a screamer. but if you keep the stock cam set up the refabbed 68 will be just fine. you will notice the truck will not be so sluggish off the line. it will maintain speeds while going up a hill with the cruise on and it will even drop your rpm a little while cruising on the highway

My school of thought on this is this:
Our motors will pull the air that is availiable. More air makes more power... but on the same token too much air makes moves the torq curve too much on the high side of the powerband, making it incredibly un-usefull as a towing vehicle... I dont want a race truck. I want a work truck. I like lowend grunt...

Kinda like all the people that get the overkill exhaust sizes..

I know mine is slightly too large, cuz there is a little lag in it's going power, but I feel, once I save up for the cams....tb....flash....and some secret internal parts.... it shouldn't be too large anymore. :-)

what if we have minor mods like chip intake exhaust 180 t-stat and an electric fan...would 68.5-69 be better? 68 to 70 is quite a difference. but so is removing the cone effect. i was thinking of going 68.5

I would think that anything under 70 would be OK, but if you run a little better than stock like the 68.5 it wouldhelp with the low end. increasing diameter will in turn increase airflow, so moving the tq curve towards the big end... my hypothosis anyway.

No you're absolutely right about the torque curve, I just want it to be even with my extra mods. 68 is good for stock...so i would imagine if you had more, save for cams, you should meet it in the middle. couldnt hurt low end much.

well, I would guess that 68.5 would flow great... especially since you have exhaust and intake... you are already potentialy moving a lot more air than stock... I would think 68.5 would work... why not ask the fastman?

So I'm not sure what the Consensus is... is 68 good, or 70... or 68.5... I mean I want as fast a truck as I can get... but I also don't want it to be able to accelerate... sooo what...yeah I'm still confused [sm=dontgetit.gif]

so for towing i would want a 68 right? all I do is tow and the intake exhaust helped out but I am intrested in this swap think it would help?

Hey, Superdak....That sure looks like an Airaid throttle body spacer you got there in the background of your picture. You're not really going to use that paperweight, are you? You should know better!

I agree, E,I'm more about low end. My tires will be bigger at some point, also, soI'll need all the low end I can get... or4.10 rears. Must be nice...

ORIGINAL: superdak05

yes it will. if you go to big then you wil lose a lot of low end grunt. but in the higher rpm range it will be a screamer. but if you keep the stock cam set up the refabbed 68 will be just fine. you will notice the truck will not be so sluggish off the line. it will maintain speeds while going up a hill with the cruise on and it will even drop your rpm a little while cruising on the highway


Actually, it's not the 68mm, it's the 68.5mm. That's what I got and that's what he suggests.

Recommended sizes:

Working with the 4.7 motor has shown 68mm to be the optimal size for street performance use. This is the size I recommend. I can machine both the Dodge 4.7 99-2000 65mm and 2001-present 68mm TB's to a True 68.50mm bore.

As for KRC, don't go to them for too much. They're way over priced. Fastman sells them a whole lot cheaper than KRC.

If you talk to Dan, he also sells the performance cams and can reprogram the ECU. You'll be looking at about $1500 after all is said and done with just those three things. That's quite a bit of HP/TQ for the price.

I was going to go with a 69mm just to one up the stock, but he said that I would do a lot better with the 68.5. If you're going to get a S/C, then get the 72mm, but don't install it until you get the S/C.

Wait wait wait... What if a guy I know is working on a remote mounted turbosetup, he would want to go with a 72MM t.b.? hmm... interesting.

the pic that i have i stole from the other website www.dodgetruckworld.com (http://www.dodgetruckworld.com) so i can say that the spacer is not mine. and yes they are a paper weight

So if the HO has a higher lift or performance cam from the factory I wonder if the factory TB is a true 68mm or coned and would a true 70mm from fastman be the correct choice for the HO.

all the 05 an up tb are the same size and coned ,just by opening up the tb with the h.o. motor will increase the performance some. its not a bad idea to do it. plus all the intakes are the same

yeah, H.O. is just cammed and Computer work... they are less than the 206 cams, but still a better cam than the non-HO (like I got shafted with ; ) I may start to look at internals if I begin my quest for 300rwhp... I am still contemplating the repercusions of such an endeavor.

Dakota, did you happen to find out whatDans ecu reprogram does and what it costs? I just figured out that the fastman lives right here in Minneapolis which makes getting ecu work done much more appealing. [sm=icon_rock.gif][sm=icon_rock.gif]

well, I am not sure if this will help or not, but if you have any questions, why not ask the guy?
http://www.thefastman.com/contact.asp

I am going to be looking into some top secret mods, and I might have to have some work done by him... :-P

Well I studied the pics superdak05 posted and swapping throttle bodies seems like a good idea. I see what you mean about cone shaped.I wasn't planning on doing a lot of engine stuff other than adding headers to the stuff I already have (elec fan, intake, exhaust) but after reading all these posts I think I will do the throttle body and maybe the 180 t stat. I am looking for horsepower and increasing gas mileage which I know the gas mileage part may be tough to do.

ORIGINAL: herkguy

Dakota, did you happen to find out whatDans ecu reprogram does and what it costs? I just figured out that the fastman lives right here in Minneapolis which makes getting ecu work done much more appealing. [sm=icon_rock.gif][sm=icon_rock.gif]


You'll want to do the cams at the sametime. The cost for the reprogram is 400 and the cams are like 700 and the installation for the cams, depending on where you go, but it's about an extra 400-500.

Okay so thats all fine and dandy for a 4.7L..but what about a 3.7L... ??? [sm=smiley13.gif]

Call and ask him.

Thanks Dakota, [sm=icon_cheers.gif]
I called Dan today and took the plunge. I'm set up next week to get a TB from him. http://www.dodgeforum.com/upfiles/smiley/yeahsmile.gifI'll be able to go to his place and install/ exchange right there. I can't wait......He was very helpful with my many questions so if you guys have specific questions about a TB and your set up, don't hesitate to call him.

No problem. Glad I could help in your decision. You'll like the improvement on throttle response.

hey, i am new here but i have a 05 dakota with 50 series muffler, stock exhaust with silver line tip, kn replacement filter no cai yet, but i am looking in to getting a tb spacer. how much on average will i benefit and how hard is it to install? also where should i get one? thanks

the spacers are basicly useless on our trucks...

they just look cool. :-D

ORIGINAL: ericemery

the spacers are basicly useless on our trucks...

they just look cool. :-D



I don't even think they look that good, but yeah tb spacers are useless don't buy into the hype.

what about the "chips" that it seems alot of you have? will you explain how they work and if it is worth adding to my dakota, thanks.

What a lot of the guys have are Jet stage I or stage II chips. I don't have one so I can't tell you much about them but I know Superdak and DakotaStone have them, among other people.

I'm not sure of the mechanics, but it changes the way the computer calculates the air/fuel mix. They're somewhat worth having. I've noticed a difference in both the chips I've had.

OK....i've got a ? 4 yall...I've gone to the Fastmans Website to see the options for the 68.5TB but it says its for a 2001...and for the 2003 and up it says it goes from a 68MM TB to a 71MM...is that the one i'm supposed to Order??

ok sorry im bored and was looking at the picture of the stock one and the fastman one...now does that effect how your intake will go on? do you need to buy a bigger cuppler for it to fit over the TB and the Inake or will in use the Cuppler that came with the intake?

Well if you just get the same diameter as the stock one you won't need to get a diff coupler because it only changes the style of the bore from being a conved shaped bore to a straight bore... this will improve your performance...

As far as what size you should get really depends on what you want to do with your truck and how you want it to perform...

OK WELL go to www.thefastman.com (http://www.thefastman.com) and tell me which one i should get then...cause i only see one that is for the modle year i have and it says it takes it out to a 71 and thats the one i'm not supposed to get....but there is not one on there that says its a 68.50....so which one should i get...thats what I'm asking!

Just go with the 68.5mm unless you plan on getting a set of cams and a super charger in the very near future.

okay i understand what your saying...but go to the website... www.thefastman.com (http://www.thefastman.com) which Throttle Body is it? cause there is only one that says 2003-up 4.7L that takes it from a 68 to71mm...the rest of the applications are 2001 only and then 2002-2003....do i need to ask him which one would fit my motor???? thats what i'm asking cause i see the one to where it says 68 to a 68.5 and thats only for a 2001~!

I would ask him. He's easy to work with and very knowledgeable on our trucks. He also sells cams and can flash our ecu.

sweet man thanks...yeah i called and talked to him! i miss read it...what it says is it means he can do between a 68.50MM to a 71MM Bore on the Throttle body...so yeah i feel like a dumbass...do you know of any HP Gains from his TB's?

herkguy.... do you have everything installed and running yet? tell us how it went.

Order the one for the 2003 and up and on the order form If I remember there is a place for comments. Just type in your truck information and the size throttle body you want. Thats what the fastman told me to do. I ordered mine about a week and a half ago.

thanks man i appreciate that so i did do it right...thats good! hey where did you get your head light covers?? those look pretty good man no joke...but i think i'm gonna get mine tinted so i won't have things sticking up you know! but yeah man the truck looks good!

I think I got the headlight covers from dakotatrucktoys.com I can't seem to remember exactly though for some reason. They were only 50 bucks or something like that.

ORIGINAL: 4x4QC06V8DKTA

sweet man thanks...yeah i called and talked to him! i miss read it...what it says is it means he can do between a 68.50MM to a 71MM Bore on the Throttle body...so yeah i feel like a dumbass...do you know of any HP Gains from his TB's?


When I talked to him, he told me there's about a 10/10 gain for hp and tq.

Those of you who got the throttle body from the fastman how long did it take to get? Its been over two weeks since I ordered mine and still don't have it yet. I sent an email but no response yet.

mine was about 6 weeks. what he has to do is wait for someone to give dan one. then he can rework it. if dan does not have any in stock then you will play the waiting game. but be patient. it will show.

ORIGINAL: 4x4QC06V8DKTA

thanks man i appreciate that so i did do it right...thats good! hey where did you get your head light covers?? those look pretty good man no joke...but i think i'm gonna get mine tinted so i won't have things sticking up you know! but yeah man the truck looks good!


I have the same ones got them from Autoanything.com they're by AVS, they cost $50 and have free shipping. :-P

yeah i was thinkin about doin that...but now i'm thinking about doing the sme thing you did to your front and rear but with Tint...so it doesn't stick out and gives it that kinda unique look...but IDK Bills come first unfortunately! lol i would love to have one month to have no bills and put it all into my truck omg it would be amazing!

Trucky,
yes its installed and I have also added a gibson swept side exhaust now. The throttle body works great, the biggest difference I noticed was that it takes a smaller movement of the throttle off the line. Before it seemed I had to push more throttle for the same responce.