Inliners International Forums General Discussion Engines 302 Military Engine

Have a 302 Military engine and using a civilian oil pan which requires drilling the hole in the block for the dip stick. Does anyone have the measurements for this two step hole?

I have a 302 military engine with a civilian oil pan. Unfortunately, I can't remember having to drill a hole for the dipstick. I put the GMC in my 1940 Chevy in 1992 and it still runs strong. I do remember installing a new tube into the hole and figuring out how long to make the tube to give the correct reading when the pan was full with 6 quarts of oil.

I just measured the tube. It has a 3/8 inch O.D. and a 19/64 I.D. The tube is exposed 3 inches above the dip stick casting. The tube is inserted into the casting 3/4 inch. The dip stick length is 13 inches from the top of the tube down into the oil pan. I think I used a civilian GMC tube and dipstick.

Hope this helps.

If there is a boss on the block I'd drill it but if not I'd find a fixture from a vehicle that mounted ti dipstick on the pan.

There is a boss on the block but never drilled because the dip stick is in oil pan on the military. I recall a post stating he had the measurements for the two step hole but can't remember where I saw it. Hole measurements should be fairly straight forward but though maybe someone already had them then I wouldn't have to re-invent the wheel.

This may have some information. Crazy when it's easier to do a Google search to find info here than to use our search engine.

LINK

Thanks for looking that up. I knew I'd seen that info somewhere

Glad to help, There is so much information on this site that is very hard to find. It used to be easier but they made improvements.