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Discussion Starter #1
Sorry guys , but I got another one . :rolleyes:


I'm going to be using a 4150 throttle body on a MPFI .

How can a spacer under the TB help ?

Can you have too much spacer ?

I have tons of room under the hood so the sky is the limit .

Right now I have 3" of hat spacer , but was thinking of putting 2" of that under the TB .

I'm also assuming this should be an open spacer ?

Does this help or hurt throttle response ?
 

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The further away the throttle blades are from the valves, the worse the throttle response will be.

The closer they are the better...that's why an ITB setup is preferred when you want excellent response.

Really depends what the build and setup is whether it will actually matter or not.
 

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I did notice a Vic Sr has a lower rpm range than a vic Jr which is shorter
I think any quoted rpm range would be more down to runner size/length and any plenum volume.

It wouldnt really matter so much about where the throttle is situated.

There would be many other factors other than intake that govern potential rpm available too though
ie cam/valvetrain etc
 

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Discussion Starter #9
The intake arrived today . Resembles a Super Victor II . Carb height is 6.5" , and the Vic Jr I'm running now is 4.5" , so its 2" taller already .

Not a bad looking piece . And it only took 2 days to get here from China ...... lol
 
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