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12-25-2007, 01:23 AM
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700r4 t0 350 swap
i have a 89 caprice and i want to know how to hook up the vacume for the module on the tbi any info
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12-25-2007, 06:24 AM
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A 700R4 does not require vacuum ... like a Turbo 350 does ... The 700R4 has NO vacuum modulator.
EDIT ... I thought you were wanting to upgrade to a 700R4 ... NOT go backwards to a Turbo 350 ... I misread your question 
Last edited by Deuce; 12-25-2007 at 07:28 AM.
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12-25-2007, 06:29 AM
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Quote:
IF you are bolting in a t-350 to replace a 700r4/4L60 trans... you need a direct vacuum feed from the engine. A vacuum gauge will help you locate this. 
__________________
At the Bonneville Salt Flats, first gear is known as 130 mph.
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12-25-2007, 06:42 AM
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You can TEE into where your power brake booster gets its vacuum.
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12-25-2007, 01:50 PM
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Do NOT use the PCV line. It's not true vacuum, and it will make it not shift right.
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