C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Need a quick measurement please...

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Old Jan 15, 2010 | 10:24 PM
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Default Need a quick measurement please...

Would someone be so kind as to measure from the center of the distributor to the TPI Plenum/TB mount? (Feel free to estimate the center and measure without removing the dist cover, a 1/4" isn't going to be that critical)

Thank you!
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Old Jan 15, 2010 | 11:45 PM
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17 3/8" to TB gasket face
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Old Jan 16, 2010 | 12:00 AM
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Originally Posted by vetteoz
17 3/8" to TB gasket face
Wow..thanks for the measurement and quick reply!!

I'm building a plenum for my SP intake and I know I need to be less than 9.1 inches above the front china wall and this measurement will make sure I get it in the right place fore/aft.
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Old Jan 16, 2010 | 12:49 AM
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Originally Posted by Steve85
I'm building a plenum for my SP intake
What intake.?
Be sure to allow for TB to thermo housing clearance.
My Victor E ( Air gap design ) restricts how low the TB ( consequently the plenum) can go if a thermo housing is used because the base of the housing is 2" higher than TPI one.
Kens80v had to do this mod to get clearance on the E intake with custom Nitrous Outlet plenum / elbow
http://forums.corvetteforum.com/1572285501-post13.html
Fine if fitted to a LT1 with no coolant outlet
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Old Jan 16, 2010 | 03:24 PM
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It's a converted 18* high rise (Edelbrock 2959) so space is very limited. I definitely planned on adding an outlet to the front of the coolant crossover to use that t-stat housing.

It looks like I may even have to trim the coolant crossover down a little bit to make room for the IAC valve, we'll see...
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