This is a Ported Throttle Body for the 86-87 Turbo Regal.
Discontinued GMpart #25525359 57 MM is modified to 62 MM. The throttle shaft blade is replaced with new. New seals are installed. The Throttle Body is media blasted.
The stock Throttle Body flow is 480 cfm on the intake test, and 398 cfm on the "blow through" test. The 62mm Throttle Body will flow 541 cfm on the intake test and 464 cfm on the exhaust test. These figures were on a 62mm Throttle Body with the shaft unmodified. The Half Shaft mod will increase flow even more.
Includes: Disassembly Cleaning Bead blasting Machine throttle body to 62mm Bore increased by 5 mm (.200") Bore shaft seal pockets for new Shaft seals Bellmouth Throttle Body Opening Bore shaft seal pockets to accept Harwal seals Install new shaft seals Manufactured custom fit polished 6061-T6 throttle plate Modify shaft to improve flow (half shaft modification) Chase all threads priorto reassembly
Price does not include a $95.00 core charge. What you send us is what you receive back. Otherwise it will be the bare minimum shipped back to you. If you want your items switched over please send core prior to us shipping. Just e-mail sales@GbodyParts.com & ask for a Core RMA. This will be issued so when your core comes in you will have an order # & make this process extremely quick to prevent down time.
