Are Corvette dipstick and tubes different from other models?
Believe dipstick and tube do not belong on my engine, the dipstick has had the bottom cut off ( on very bottom reads FULL not ADD. The tube is longer than on my other Chevy engines, tried dipstick from my ‘71 C-10 and a 305 engine (not in use) and both don’t reach the oil in pan. Would like to use tube and stick from the 305 engine, could drain oil and refill to check that it reads correct with five quarts added. The car had a Jasper engine installed just before I bought it, and before I sold car know dipstick had both the ADD and FULL marks. After buying car back after three years noticed modified stick. Plan on using a wire into tube to check length to bottom of pan...should stick reach into pan to touch bottom or raised off bottom?

Using a wire to reach bottom of oil pan in all three engines see that none of the sticks come close to hitting bottom.

Stick at top is from 305, middle from Corvette, bottom is wire with tape at locations of depth for different engines. 350 in truck and 305 dipsticks are about the same, Corvette much longer. Looking at these guessing there must be at least 3quarts of oil in pan before stick reaches it. Only a guess

Ended up using stick and tube from 305 engine, reads correctly but hard to feed stick into tube. Going to reinstall original tube and look for a longer and correct dipstick

Stick and tube need to match. Short tubes get short sticks and vice versa.

According to my 1980 Corvette Parts Book, the 76 to 79 Corvette used a dipstick that was 20" from the cap to the full mark, and 21" from the cap to add. The corresponding tube is 8 3/4" from the shoulder to the top of the tube. Some dipsticks had a part number on them, the part number for the 77 dipstick was 3981019.

Out of curiosity, do you know if you have the correct pan. Corvette pans are pretty easy to identify, because they all have the drain in the center rear, while most other Chevrolet pans, have it on the side.

Mine is on the side. With new filter and fresh 5qts. oil with the short tube and short stick measures Full on stick, only thing with the shorter ones too hard to feed stick into tube. My 20” stick had been cut down from longer one, so I need to find the correct 20” stick and put longer tube back in. Thanks for numbers and information, good to know.