Up for grabs is a newly bored and ported 75mm throttle body 4.3L, 5.0L, and 5.7L - Best on Ebay

These throttle bodies have been bored to 75mm all the way through and fitted with a new 75mm throttle blades - highest flowing and best quality 75mm throttle body on ebay.

Fits and available for:  1996-2009 Vortec 4.3L, and 1996-2000 Vortec 5.0L & 5.7L in GM mid and full size vehicles such as Blazer, Silverado, Sierra, Yukon, Suburban, S10, Bravada, Escalade, Tahoo, and more.  This auction is for the service to modify your throttle body, or you can add a $40 core charge for outright purchase, or advanced exchange. Will NOT fit 4.8L, 5.3L, or 6.0L Vortec motors - please see our other auctions

Fast USPS Priority or Express shipping

Our 75mm throttle body offers a 30% gain in air flow (over stock) and will give significant gains in low end torque as well as a good boost in top end HP (17hp & 15ft-lbs torque on a stock 5.7L motor, up to 78 dyno proven HP on modified motors).

Winning Bidder:  Please include the following with your paypal payment

• Vehicle make, model, year, and stock engine size
• Stock throttle return spring color that came on the vehicle (the color determines spring tension) available colors that came on vehicles are yellow, orange, brown, purple, blue, white- again, we need the color that came on your vehicle stock.
• Whether you will be sending your throttle body in for modification, or if you need an invoice for $40 for outright purchase (we will refund $40 if you return your stock, unmodified throttle body with no broken screws)

Our 75mm throttle bodies have the following features and work performed

• Bored to 75mm all the way through, Your stock Vortec throttle body necks down to 71mm
• The stock air diverter that GM installs on all Vortec throttle bodies is completely removed for big gains in air flow
• New custom 75mm throttle blade installed with perfect fit for no idle hassles
• media blasted for that better than factory finish - these look like NEW
• black painted throttle linkage - looks much better than your stock rusted linkage
• If you choose advanced exchange or outright purchase, we will refund $40 if you return your stock rebuildable throttle body within 45days - instructions will be sent.  Throttle body must be in good shape with no broken screws or other issues for full credit
• Look at the photos - these are very nice items when we are done
• Winning Bidder- please include with your paypal payment the info requested above
• (Failure to include vehicle and core info on your paypal payment page will delay shipment)

Payment and Shipping

All orders are usually shipped within 24hrs (i.e. next business day) of payment clearing (and receipt of requested vehicle info) and we will email complete shipping info when it goes out.  Payment is expected within 7 days of item conclusion via paypal (to confirmed paypal shipping address) 

See the ebay calculator for US and International shipping rates

Any questions or need fitment info, please email

Thanks for looking