a couple things on my 4.7 that are "performance"

i have headers to twim cats that run to a super 44 muffler out 2
the K&N cromed air intake...not that that makes much of a difference just looks nicer
and on order right now is my super chip

truck runs great, still can't eat a hemi though

-Rhubarb

 

kregier,
I have the 68.5mm and this mod is a must for our motors. The gains are very noticable, your throttle is light to the touch.

 

287 what do you think about an evenlarger TB? I was thinking of the BBK 70mm or the F&B 72mm. Just figured more size for when I do cams, headers, etc.... at a later date. Isn't the stock size a 68mm?

 

From what I have read on other forums the 68.5mm is perfect for mods without running a turbo. Here is a quote from his website about the tb stock size and why his is a true 68.5mm.
"



Both the 65mm and 68mm TB's are really 3mm smaller than advertised because of the restriction above the throttle blades.


The Fastman 4.7 TB's remove this restriction and are a True 68.50mm bore all the way through

Hawkdriver, you wont be dissapointed with the mod. Oh and also for the price, the fastman's tb is $260 but when you return your old tb to him he will refund you 80 bucks so you will be getting a great mod for under $200.

 

So then I would assume that the ones he sells are just stock TB's bored and polished?

 

Yes. I am not sure if you have been onto his site but here is a link to his webpage.

www.thefastman.com

 

Good site. I wish he would show some Dyno charts on that claim though. I know there's probably more too it but it seems as though you couldtake that lip off at a local machineshop for less and just hand polish it. I believe him though when he says thats the optimum size though. More air/fuel is'nt always necessary. It will also look stock when the truck goes into the dealer (warranty).

[IMG]local://upfiles/70577/9E4BC1115E5F4682924F566A8CB3692C.jpg[/IMG]

 

Yeah no worries on the dealer noticing anything. Imo, your best bet is your local machine shop like you stated or just buy from him, I would not pay $300 for those other brands. Pm sent btw.

 

Yeah I'm with you on that. I might spend the $ if I knew it was going to be asignificant gain 10-15hp. But I hav'nt been able to get a definitive answer from those who have one. Heres my ratio 5hp=$100 give or take. (mostly take lol)

 

lol.. what prompt me to buy one is driving my buddys ram with one on. Are you in So Cal?