[Tellyshavilli]

Originally Posted by PontiacJim1959

Pontiac used a factory windage tray on their high performance and GTO engines. The early trays were a full length and used from 1965-69 and covers all 4 crank throws. The long tray was also installed on the 1970 350CI & 400CI engines and all 1972 2 bbl V8's.

The shorter tray does not cover the front crank throw for #1 & #2 cylinders and was considered not necessary as the pan was so shallow at that point. The shorter tray was introduced in 1970 on the 455CI. The engines that had them were 1970-73 455, 1971-73 400 4Bbl, and all 1972-73 V8 engines. The tray was discontinued when Pontiac introduced the baffled oil pan in late 1973.


First photo shows the long versus short tray side-by-side - the factory only had 3 oil drain holes and someone has added additional oil drain holes to this tray.

Second photo shows my 455 - noting you must have the #2 & #4 main cap with the holes to bolt on the windage tray.

Third photo shows the oil pan with its built in oil baffle.

The last photo shows you why you would not use both a windage tray & oil baffled pan together.

Great info