Ford SB 289 302 351 Windsor Flat Guide Plates (5/16" P/Rod- 7/16" S/H - 2Pc Adj) Speedmaster crankshaft damper spacers are

Speedmaster crankshaft damper spacers are just what you need to install your  429 or 460 damper

Speedmaster has already done the work for you

enhancing overall performance and efficiency

along with energy-efficient and cost-effective friction management

Available with show polished or satin (unpolished) finish

Ford SB 289 302 351 Windsor Flat Guide Plates (5/16" P/Rod- 7/16" S/H - 2Pc Adj) Speedmaster crankshaft damper spacers areYou need guideplates to keep your pushrods from deflecting under high rpm conditions. That's just what our Speedmaster guideplate sets do, they are made from 5140 Chromoly steel, nitrided and black oxide coated for corrosion and wear resistance.