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GTO Boy
Dodge Dakota
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6/16/2003
20:53:45
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 Subject: 70 or 72 mm TB for 4.7?
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Message:
Okay...so I went to the F&B site...and they sound like they're makin' a pretty good product...I've had a few folks reccomend the 70mm...why not the 72? Is it too big for a street truck - too expensive? What's the deal?
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franlofter
Dodge Dakota
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6/16/2003
21:06:27
|  RE: 70 or 72 mm TB for 4.7?
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Funny I was watching HP tv this weekend they did a TB, exhuast and intake and dyno after each mod they got 2 HP outs the new TB, 8Hp from exhaust and 8 hp from intake, My opinion is a bigger TB for the 4.7 is a big waste of $.
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ian
Dodge Dakota
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6/16/2003
22:49:42
| RE: 70 or 72 mm TB for 4.7?
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franlofter...and this dyno was on a 4.7?
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hardbody
Dodge Dakota
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6/17/2003
00:03:05
| RE: 70 or 72 mm TB for 4.7?
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No, I believe it was on a chevy impala ss with the LT1 engine
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ian
Dodge Dakota
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6/17/2003
00:03:53
| RE: 70 or 72 mm TB for 4.7?
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then let us not compare apples to oranges heh?
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franlofter
Dodge Dakota
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6/17/2003
01:31:42
| RE: 70 or 72 mm TB for 4.7?
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Yes it was an impala, but anyone that has done any kind of reading on these boards has read time after time very litlle to no gains going from 68mm 4.7 to 70 or 72 if there were any gains they were in top end, if you dont care about spending $400+ for 5 hp then more power to you.
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franlofter
Dodge Dakota
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6/17/2003
01:38:09
| RE: 70 or 72 mm TB for 4.7?
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just a thought I had, today was 110 outside and my trucks power feels like its 70 out from the little cheap mods i have done, quite happy.
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rtdkota
R/T
6/17/2003
11:02:47
| RE: 70 or 72 mm TB for 4.7?
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Message:
the 72mm is primarily for SC or Turbo applications. You'd suffer too much low end loss from my experiences.
The 70mm works well on NA 4.7s, semi-stock, modified (HO cams, etc.)
I carry them all-- but that's my recommendation (the 70mm).
Sam
www.socaldakota.com
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Demon Dakota
DakotaEnthusiast
6/17/2003
12:51:18
| RE: 70 or 72 mm TB for 4.7?
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Message:
TB changes by themselves will not do that much. That goes for any single mod in the entire world (short of N2O, turbo, or S/C applications). you have to do them in the appropriate steps to get the gains you're supposed to get. More ability to flow air into the engine is useless w/out the ability to flow more air out of said engine...
K&N Drop in AF (CAI during summer months)
True Dual exhaust and removed third cat
HO Cams & HO Intake
FASTMAN 70mm TB
Autolite 3923 Plugs
TPS @ .76 VDC
IAT Adjuster Mod
14.52@94.2 MPH at Silver Dollar Raceway
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ian
Dodge Dakota
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6/17/2003
18:59:18
| RE: 70 or 72 mm TB for 4.7?
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Message:
franlofter...I don't no what posts you've looked at but personally when installed a measly "true" 68mm tb from the fastman the performance increase was not only noticeable but dramatic, if the damn pedal vibration wasnt so violent I would still have it on...in fact the performance increase was so incredible I'm thinking about trying out another tb hoping and praying the pedal vibe doesnt return
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xplikt
GenIII
6/17/2003
22:09:58
| RE: 70 or 72 mm TB for 4.7?
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Message:
Hey Sam, I've been thinking about ordering a 72mm TB from you for a while. What do you think about a 72mm on my truck? Mods are listed below + 4.56 rear end.
My planned mods are:
KRC cams (later this year)
JBA Headers + true dual 2.5" dumped (probably next month)
I would like KRC's high comp piston upgrade, but that one hurts. Has anyone had any experience with them yet?
-Mike
http://www.dodgetruckworld.com/xplikt/
2002 2WD RC SLT 4.7L 5spd 3.92 LSD
MBRP Single in/out | straight piped 3rd cat | turndown tip
Full Hotchkis and RAS
Shaved emblems and antennae
150BM fan | removed clutch | HD Radiator
R/T wheels on 275/40/17 Dunlop 9000s
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notchlx
Dodge Dakota
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6/17/2003
22:11:07
| RE: 70 or 72 mm TB for 4.7?
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Message:
Duner picked up 4 tenths from the 72MM over a ported stock 68MM... Sheesh... What a waste, only 4 tenths.
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xplikt
GenIII
6/17/2003
22:45:11
| RE: 70 or 72 mm TB for 4.7?
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Message:
Was that before or after the big hairdryer?
-Mike
http://www.dodgetruckworld.com/xplikt/
2002 2WD RC SLT 4.7L 5spd 3.92 LSD
MBRP Single in/out | straight piped 3rd cat | turndown tip
Full Hotchkis and RAS
Shaved emblems and antennae
150BM fan | removed clutch | HD Radiator
R/T wheels on 275/40/17 Dunlop 9000s
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notchlx
Dodge Dakota
JOIN HERE
6/17/2003
22:57:26
| RE: 70 or 72 mm TB for 4.7?
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Message:
That would be afta afta, the Conair.
I was set to buy, but set backs have me waiting a little longer. I can't wait.
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midnightmagic
GenIII
6/18/2003
01:02:38
| RE: 70 or 72 mm TB for 4.7?
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Message:
hey Ian wanna sell that 68mm tb? if so email me
It's Gumbo night every night with all the rice i cook!
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