A common problem in GM 200-4R and 4L60 transmissions is burned bands and/or 3-4 clutches. This failure can be reduced by eliminating throttle boost oil leaka
700R4 200-4R TRANSMISSION TV BOOST VALVE KIT WITH O-RINGS .500 HI-PERFORMANCE FITS '81-'93 SONNAX 77917-500 - Transmission Parts Distributors
Sonnax 77917-04K TV Boost Valve Kit .500 Dia., Factory-Style Sleeve (No O-Ring)
200-4R Mega Boost Valve, Sonnax 77917-500
Sonnax Tool Kit - 77917-TL
200-4R, 4L60 TV Boost Valve Kit Part No. 77917-04K .500 Bore Dia., Factory-Style Sleeve 200-4R, 4L60 TV Boost Valve Kit Part No. 77917-04K .500 Bore
Sonnax 77917-04K TV Boost Valve Kit .500 Dia., Factory-Style Sleeve (No O-Ring)
77917-500 - 200-4R 700-R4 SONNAX TV BOOST VALVE - Product Details
SNX-77917-04K
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Sonnax 200-4R 4L60 TV Boost Valve Kit (#77917-500)
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Automatic Transmission Boost Valves - Free Shipping on Orders Over $109 at Summit Racing
Automatic Transmission Boost Valves - Free Shipping on Orders Over $109 at Summit Racing
200-4R Mega Boost Valve, Sonnax 77917-500