Shown with Optional Machined / Brushed Finish

Ported for up to a 58mm Throttle Body & Large Siamesed Runners
Compatible with Stock, SLP, Accel, AS&M, Edelbrock, & TPIS Runners

QUALITY 2ND TO NONE!

The Porting / Refinishing Service Includes

Plenum Fully Cleaned & Bead Blasted for a better than New Appearance
All Bolt Threads Checked and Tapped/Chased if Necessary
Throttle Body Openings Enlarged to 58MM
Runner Openings Enlarged & Gasket Matched to TPIS Large Tube Runners 1 3/4" (from 1 1/2")

Porting Cores

You have the option to send in your plenum to get ported and refinished and not pay a core deposit.  Or we typically sell them on core exchange where you pay an upfront core deposit and we refund the deposit upon receiving your good plenum in return.  If you do not have a plenum to return, that is not a problem.  We sell them outright with no core required and the following core deposits will apply.  Note, there are 3 styles of plenums used on the 85 - 92 TPI Engines.  85 - 88, 89, and 90 - 92 Speed Density.  Some are more rare than others and the core deposits reflect this.