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deerridge
GenIII
2/24/2004
16:45:24
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 Subject: fastman or F&B
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Message:
I keep reading about great power from the F&B and Fastman throttle bodies, but I've never seen or heard any dyno results from either over stock only as associated with a cam or other change. Whats the impact of the throttle body change by 3mm or more on torque or hp?
Real Horsepower
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wildhawk
GenIII
2/24/2004
17:07:05
|  RE: fastman or F&B
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Deerridge, what engine are you running and have you made any other mods to the intake or exhaust?
I ran a 50mm flowmetrics on my 5.9 with a modified K&N FIPK cold air intake, headers and a flowmaster exhaust. I definately noticed a big difference in high end power with the 50mm. I dont think the difference would be nearly as great without the other mods all working together.
Check out the flowmetrics site, they have some dino charts posted for various applications:
http://www.fbthrottlebodies.com/index.htm
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another mark
Dodge Dakota
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2/24/2004
20:20:52
| RE: fastman or F&B
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When I added my F&B I had headers, custom air intake, aftermarket exhaust and flowmaster muffler and the TB made a big difference on my V6
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Lello
Dodge Dakota
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2/24/2004
22:42:55
|  RE: fastman or F&B
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About a year ago, I believe it was 'Mopar'magazine tested a 50 F&B on a completely bone stock R/T........result.....10 hp to the rear wheels with a comment that it may have been higher if additional parts were added to compliment it. Not bad at 10 to the wheel with nothing else.
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holes
Dodge Dakota
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2/25/2004
22:15:06
| RE: fastman or F&B
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Fastman is cheaper and theres a core exchange , F&B is more $$$ and its all pretty aluminum. Other than that , theres no difference. Its just air going through holes.
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jsst
Dodge Dakota
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2/26/2004
00:07:54
| RE: fastman or F&B
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I just got my fastman TB a week agofor my '01 4.7,auto,silver quad, the torque is very noticable as well as the throttle response. I put a high polish finish on the throat and butterfly. Finally I have a second gear that really pulls. the only mods I have are K@N homebrew w/flap removed, tps.725, relocated IAT, clutch fan removed, autolites, torque reduction sensor on tcm w/on/off switch,r/t rims w/275/50/17nittos.
Seat of the pant horsepower I would have to say a good 10-15 hp, but the torque is definately more. My last fillup was 1/2 mpg better milage.
jeff
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J-Man
Dodge Dakota
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2/26/2004
00:15:03
| RE: fastman or F&B
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Yo jsst,
What is that torque reduction sensor on tcm?
I haven't heard of that before....
J-Man
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01Motorsport
Dodge Dakota
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2/26/2004
10:36:33
| RE: fastman or F&B
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jsst...What size mm Fastman TB did you get? '01 4.7 here, too.
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rtspeeddemon
Dodge Dakota
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2/26/2004
12:37:20
| RE: fastman or F&B
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Holes: WAKE UP
Its all about how that air gets through the holes that makes the power.
The Fastman is a cheap alternative to the real deal the F&B TB.
If you want maximum power you want the real deal!
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deerridge
GenIII
2/26/2004
13:19:45
| RE: fastman or F&B
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Thanks, Wildhawk the F&B site has the dino showing 14hp/10lbs gain on the 4.7L. Facts win over feel every time. Looks like a good mod, fairly cheap and easy. I have Gibson headers, INt. Per intake and a custom PCM flash now. Each has given noticable results. A new throttle body and HO cams are now on my toy list.
Real Horsepower
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holes
Dodge Dakota
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2/26/2004
22:34:14
| RE: fastman or F&B
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14/10 is "real horsepower" ? LOL
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92.59
Dodge Dakota
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2/27/2004
02:41:46
| RE: fastman or F&B
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Well the great throttle body debate continues...
So far I've read that a 52MM F&B outperforms a 52MM Fastman. However, I've also read that a F&B 52MM is actually larger in bore size, while on the other side, the Fastman 52MM is smaller, coming in at 51.75MM (it's even listed on his website). So to compare the two is slightly unfair, however, Dan does market the 51.75MM as a 52MM throttle body, thus he's opened himself to claims that a competetor's 52MM TB will outperform his own 52MM...and I'm sure that they aren't seat-of-the-pants gains that can be felt between the 2 "52MM" TBs.
It does raise the question if someone were to dyno a F&B 52MM versus a Fastman 53MM, would you get similar gains???? If so, then the best bang for the buck would be the Fastman.
It boils down to $$$ and overall preference. If you want the performance and the "look," go with the billet F&B. Sure you're going to pay more for the F&B, but that's the only downside of the billet TBs. Or if you're into just racing/hi-performance, and don't care about overall, show worthy appearence, then get the Fastman. Not that his TBs look bad, they're just reworked stockers...so just keep the airhat/air cleaner on.
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Joey
Dodge Dakota
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2/27/2004
03:18:03
| RE: fastman or F&B
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actually the 50mm F&B outflows the 52mm fastman. even though the size of the F&B is smaller it performs better than the larger fastman due to superior design and quality. just looking at them side by side tells u which one is better, thats why i got the 50mm f&b.
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Joel Petkovic
Dodge Dakota
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2/27/2004
12:30:09
| RE: fastman or F&B
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How about the Hollet TB?
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Joel Petkovic
Dodge Dakota
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2/27/2004
12:31:36
| RE: fastman or F&B
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Typo in last post, Holley
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rtspeeddemon
Dodge Dakota
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2/27/2004
12:34:48
| RE: fastman or F&B
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Holley has a class action suit against them for copying the F&B TB.
However they can't seem to make it quite right has there have been several people complaining about sticking throttle plates etc..
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Joel Petkovic
Dodge Dakota
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2/27/2004
12:44:24
| RE: fastman or F&B
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Good to know. I would have thought that Holley would get it right. Looks like F&B is the way to go.
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big_trq
Dodge Dakota
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2/27/2004
21:55:54
| RE: fastman or F&B
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Joey,
Show me where , it "outflows". Not that cheesy dyno sheet that says FB make 4 more HP.
Side by side the FB is better why ? Can you see more air going through it ? Or is it because its all shinny which make no bit of difference. Go ahead and pay 400+ $ and be all proud of something thats hidden under an airhat.
BTW ,
FB 50mm = 2.000" = 50.8 mm
Fastman 52= 51.75 mm
Looks like someone knows how to round off.
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Joey
Dodge Dakota
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2/27/2004
22:14:20
| RE: fastman or F&B
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i will find the exact place where i saw the F&B 50mm outflows the fastman 52mm but for now... go to hughesengines.com: they have ported stock throttlebodys like fastmans and also billet aluminum throttlebodys like the F&B. they clearly state that the CNC Billet versions outflow the ported stockers even if the holes are slightly smaller. its been said over and over... the cnc billets are better and thats that. if u wanna save a little money than fine get the fastman but if u want the best throttlebody get the F&B. Plus i held both in my hand and the F&B is much more solid and heavier.
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jsst
Dodge Dakota
JOIN HERE
2/29/2004
00:04:04
| RE: fastman or F&B
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J-Man ,
These are 2 of the postings for the torque management request for the tcm, it seems it only works on '00-'02 where the tranny (545rfe)has a separate control module, newer daks have the tranny and engine control modules integrated together. So this mod may not work.
https://www.dodgedakota.net/boards/v8/4867-1.html
https://www.dodgedakota.net/boards/v8/23.html
jeff
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jsst
Dodge Dakota
JOIN HERE
2/29/2004
00:32:54
| RE: fastman or F&B
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01Motorsport,
I got a 68mm for my '01 4.7. I did not reset the pcm when I installed the fastman, but there was a noticable improvement right away. It's been a week now and the pcm has adjusted to the new TB. The power off the line is impressive. I used to slightly feather the gas off the line to keep my 275/50/17's glued to the road. Now up to 10mph I can break'em loose at will. It is a blast. Passing gear is noticeably improved. I think for around $200 and 10-15min. of time this was the best mod I've done so far. Dan (fastman) was very helpful in answering any questions I had. A+ product and service.
http://www.thefastman.com/ThrottleBodies.asp
Hope it helps, jeff
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