Technical 700r4 loss of drive

MikeAtt · Nov 19, 2020

Happydaze said: ↑

You're right! Apologies! I was looking for a four barrel carb and saw what I though was the transmission, without seeing it wasn't a 700r4 despite my having one! My bad.

Post #27 makes sense as the solution.

Using the schematic 78 degrees of throttle shaft rotation seems to be the measure - logically it would be 90 degrees as an absolute maximum, so 78 sounds logical. Might be worth checking what you have as your pics look nothing like that amount of rotation - I wonder how that works! You'd need a longer radius to achieve the same length of pull over a reduced throttle shaft rotation.

Some more info here, including lengths and angles, albeit four barrel related! This appears to put the idle position nearer to the throttle shaft centerline and the wot further from the shaft centerline.

https://www.stevesnovasite.com/threads/700r4-holley-dp-bracket.661083/

Chris
Click to expand...

Perfect info there, just what I needed. Thanks [emoji108]

Well on the way to mocking up the new bracket now

Sent from my iPhone using H.A.M.B.

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Technical 700r4 loss of drive

MikeAtt
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MikeAtt Member from Cornwall, UK

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MikeAtt
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from Cornwall, UK