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Line Booster Kit

Line Booster Kit

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Quick Overview



Line rise control in the AODE/4R70W is different than in most units. Forward pressure
is controlled by EPC oil reacting directly on the spring end of the PR valve. The OE boost
assembly only increases pressure in reverse. Traditional use of a larger ratio boost valve to
increase line pressure has not been an option for this unit. Sonnax has created a specially
designed boost assembly that introduces a supplemental “boost valve” to augment line rise in forward ranges. Like other Sonnax line pressure booster kits,
this special boost valve adds EPC reaction area, providing higher pressure
incrementally and when it is needed the most. Combined with a spring that
is approximately 10% stronger than OE and more conservative in impact
than other aftermarket “kit” springs, this unique Sonnax booster kit gives
you the best of both worlds: a modest pressure increase at the low end, with
a high-end pressure that is equal to or greater than that of other aftermarket
“kit” springs.

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