Royal Purple MAX GEAR SAE 75W 90 Transmission Fluid 946mL # 01300 Rate_40 deck height* 1054 billet steel deck height* 1054 billet steel 6 bolt main bearing caps* 6 bolt cylinder head bolt pattern* Cam bores that can be machined to accept 60mm roller bearings* Can be machined for larger diameter lifters* External oil pump feed at the rear* Added 7th transmission bolt hole to work with early style GM transmissions* Can accept a front motor plate for racing use* Threaded freeze plugs that can be used for external heaters or coolers* Windowed main bulkhead TCI GM T350 Powerglide Speedometer Driven Gear Grey 22 Tooth # TCI880004 PERFORMANCE ADVANTAGES Lower coefficient of friction