Pontiac 326 400 455 Flat Guide Plates (5/16" Pushrod - 7/16" Stud Hole - 1 Pc.) Pinit $20.40 SKU: PCE251.1026 You need guideplates to keep your pushrods from deflecting under high-rpm conditions. That's just what our PCE 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: PCE Part Number: PCE251.1026 Part Type: Guideplates Guideplate Pushrod Size: 5/16 in. Guideplate Style: Flat Guideplate Materia... DetailsBackDetailsBrand:PCEPart Number:PCE251.1026Part Type:GuideplatesGuideplate 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