Larger TB - what has to be adjusted??

I have searched on here, and in other forums, and see that I've got to adjust line pressure in the tune for a larger throttle body for an 4L60E. Can someone provide a bit more specifics in regards to what, exactly, has to be adjusted and offer some guidance in how much needs to be rolled in/out?

Thank you

Quote:

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Originally Posted by atlantadan

I have searched on here, and in other forums, and see that I've got to adjust line pressure in the tune for a larger throttle body for an 4L60E. Can someone provide a bit more specifics in regards to what, exactly, has to be adjusted and offer some guidance in how much needs to be rolled in/out?

Thank you

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We need more information from you like, year, ecm #, and just what your doing or what has been done to
the engine...

Quote:

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Originally Posted by C2500

We need more information from you like, year, ecm #, and just what your doing or what has been done to
the engine...

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Sorry, its a 1995 lt1, 383, HCI, A4, 3k stall, 3.42 gear. Any assistance is appreciated.

Quote:

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Originally Posted by atlantadan

Sorry, its a 1995 lt1, 383, HCI, A4, 3k stall, 3.42 gear. Any assistance is appreciated.

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For future searchers: Increase the line pressure across the board 5% for a 52mm, 10% for a 58mm. I have also seen to copy the cells up one space for 52mm and up 2 slots for a 58