Ford SB 289 302 351 Windsor Flat Guide Plates (5/16" P/Rod- 7/16" S/H - 2Pc Adj) Pinit $18.00 SKU: PCE251.1014 You 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. Quantity -+ Add to Cart Details Brand:SpeedmasterPart Number:PCE251.1014Part Type:GuideplateGuideplate Pushrod Size:5/16 in.Guideplate Style:FlatGuideplate Material:SteelGuideplate F... DetailsBackDetailsBrand:SpeedmasterPart Number:PCE251.1014Part Type:GuideplateGuideplate Pushrod Size:5/16 in.Guideplate Style:FlatGuideplate Material:SteelGuideplate Finish:Black oxideStud Size:7/16 in.Machine Work Required:NoQuantity:Sold as a set of 8.See MoreSee Less