Why the hype over edelbrocks 103mm?

[cchvyd28]

I don't mean to talk bad about edelbrock or diminish their blower in any way, because I think they make a good blower and and the 2.65 rotors have ton of potential.

But my question is, why does it seem that everyone is losing their mind over the 103mm throttle body on the stage 2 kit? I have seen multiple people talk like the 103mm is going to make just all of the power and be insane. When competitors offer a twin jet 67mm (67mm x 2 = 134mm) , and other competitors offer oval and monoblade 132mm, 150mm, 160mm, and even one that is 170mm. Is 103mm even going to be enough to feed the 2.65, or will it still be a choke point? Does being round vs oval mean it requires less size to flow the same?

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[Burkey]

I don't mean to talk bad about edelbrock or diminish their blower in any way, because I think they make a good blower and and the 2.65 rotors have ton of potential.

But my question is, why does it seem that everyone is losing their mind over the 103mm throttle body on the stage 2 kit? I have seen multiple people talk like the 103mm is going to make just all of the power and be insane. When competitors offer a twin jet 67mm (67mm x 2 = 134mm) , and other competitors offer oval and monoblade 132mm, 150mm, 160mm, and even one that is 170mm. Is 103mm even going to be enough to feed the 2.65, or will it still be a choke point? Does being round vs oval mean it requires less size to flow the same?

2 x 67 does NOT equal 134 for the purposes of calculation in this instance.
AREA of a 67mm TB = 3525mm
Double for two of them = 7050mm
103mm TB = 8332mm
In terms of CFM, I have no idea what this means.

 

[cchvyd28]

2 x 67 does NOT equal 134 for the purposes of calculation in this instance.
AREA of a 67mm TB = 3525mm
Double for two of them = 7050mm
103mm TB = 8332mm
In terms of CFM, I have no idea what this means.

Ok math isn't my strong point lol, but the others still hold true.

 

[Burkey]

Ok math isn't my strong point lol, but the others still hold true.

For clarity, Whipple use the “Roval” design for clearance to the hood.
Twins are usually used in order to make airflow easier to control at partial throttle openings.

 

[Boduke0220]

I’m wondering this too. A VMP Gen 3 on 18psi has made 1000rwhp on Scott hasty’s S197 through a 6r80. Doubt an eldebrock can do that

 

[Kona 18]

Edelbrock has posted that they have cars making 900+whp on the 103mm, that is more power than most people will ever push their cars too. Sure the 132/150 rovals can support more, but most people don't ever use them to reach those levels. Also the 103mm is 103mm round, not an oval like the twin dual blade TBs(looks to of been pointed out above). I actually asked @Edelbrock Tech about why they choose 103mm over something much larger like Whipple and they mentioned that during their testing the larger TBs were getting diminished returns as they went larger and larger. I mean, you do eventually get to the point where pressure drop is negligible and you just wont see anymore power from a larger TB.

Here is some pics of the inlet, they even made is so you could make your own adapter and run w/e TB you want, the opening is pretty large

 

[Dalton@Evolution]

I’m wondering this too. A VMP Gen 3 on 18psi has made 1000rwhp on Scott hasty’s S197 through a 6r80. Doubt an eldebrock can do that

I wouldn't doubt it

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