The Stovebolt Site Forums The Shop Area Engine Shop freeze plugs

could someone supply a Dorman p/n for the freeze plugs at the front & rear of a 270 gmc block, I believe they are the same. also the rear cam plug. i have searched on line and can't find it. i did do a search on AI and the sizes are not right.
THANKS Jay D.

Have you looked at RockAuto, they list a handful of core plugs and sizes of each, maybe you can figure out which two you need.

jay d - from my research into the GMC Parts Books I have, it appears the front and rear block coolant core plugs for your 270 should be 2" diameter concave disc style (no lip). Dorman 550-028 matches the description, dimensions and style of the core plug for your engine. The original GMC Part Number is listed as 103898 - Plug, cylinder block (2" expansion).

The 270 camshaft rear bearing plug is listed as GMC Part Number 838127. That same part number is listed in Chevrolet Parts Books as Plug, camshaft bearing hole (cup type) with a 2" diameter. Chev's of the 40's offers their Part# 838127 as the rear camshaft bearing plug with a diameter of 1-31/32" as a reproduction for the original GM part number.

Hope this may be of some help.

THANKS, YOU DA MAN!!!
Jay D.