BBK throttle body

[Lhemi]

BBK is boasting 14-24 extra hp just from bolting on their 85-90mm TB

 

[mattyhfd]

Educate me please, what is a throttle body and what purpose does it serve? Does it work?

 

[arod412]

I'm not expert here mattyhfd but I've been on this site for a while so if someone can help me that would be great. Throttle body increases air and helps with the gas/air mixture going into the truck engine...is that correct?

Angel

"worrying about MPG in a truck is like looking at a Prius tow rating"

 

[Caldwell]

LHEMI - if your considering buying one, then I would look into moe's instead.

AROD - it just allows more air to enter into the intake manifold, thus altering the Air / Fuel like you said. Tuning is always suggested.

 

[Caldwell]

LHEMI - if your considering buying one, then I would look into moe's instead.

 

[charonblk07]

The BBK TBs are true-bore, which means that if it's an 85mm TB then the butterfly is 85mm in diameter, same for their 90mm. All the ported TB, like Moe's, Bully's, etc. are all 80mm butterfly valves with the throat ported to the stated diameter.

Why does this matter? Intake air velocity and volume. In a stock/bolt-on vehicle the 80mm TB (and ported variety) is optimal because it allows sufficient air volume to enter the intake manifold at a high enough velocity to refill the intake manifold and aid in flow into the runners. A larger true-bore TB allows a larger volume of air to enter the intake manifold but at a lower velocity. The result on an identical engine displacement is less bottom end due to the lower velocity, but you'll pick up at the very top end when you really need volume flow.

Typically a true-bore TB is used in larger displacement N/A engines and is matched to the driving/racing style expected. High rpm with high volume demand uses the largest TB, lower rpm (think 4k-6k rpm) with high volume demand uses the smaller TB.

When the Arrington 90mm was released several years ago there was a lot of bandwagon jumping with almost all very disappointed in the results. When it comes to a TB, bigger is NOT better.

 

[SIhemi]

So is the moes 85 mm a good buy for low end

 

[BlownGP]

Educate me please, what is a throttle body and what purpose does it serve? Does it work?

If you don't know what a TB is, you shouldn't be moding your truck

Save your money for tuner, no need for TB on a stock truck.

 

[BlkRamRt]

so is the moes 85 mm a good buy for low end

if you plan to run headers get the 87mm if not get the 85mm this goes for the 09-12 for the 13+ i think they only come in 87mm

 

[Hemi450hp]

Do you have any plans to add headers? If so, then look into the 87mm instead. The 85mm would be perfect for your current mods, but with headers, you will get an extra 5-6hp out of the 87mm.

 

[SIhemi]

Headers are on the list but might have to wait till next yr. will the 87mm be too much until I get the headers. I just pick up the Vararam intake also. Thanx for the help

 

[Hemi450hp]

There is no negative to running our 87mm without headers, but you will not see its full potential until the headers are installed.

 

[SIhemi]

Ok thanx

 

[Lhemi]

I got a 87mm and Vararam from Moe's for Christmas.