Main Bolt Kits
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6 point 170,000 psi tensile strength main bolts with standoff studs for 260-403 Oldsmobile engines (except 330 & 350 diesel). Standoff studs for the No. 4 main so you can use the WT-204 or factory Toronado style short windage tray.
6 point 170,000 psi main bolts and ground washers for 400, 425, 455 and 350 Diesel Oldsmobile V8 engines.Fits all big block V8’s so you can use the WT-204 short style windage tray or factory Toronado style short windage tray.