Original 66-67 327 dipstick tubes - GM # 3876784

[David L.]

Does anyone have or ever had a NOS 3876784 dipstick tube sold over the counter that was painted black?

Enclosed are photos of my current collection of 3876784 dipstick tubes that I have collected over the past 33 years. I believe that the tube that is painted black (on the left side in the top photo) is NOS. I know that the other 4 tubes are used original. The tube painted black has glue remnants from a missing part number sticker and is not painted at the very top (the top 7/16" as shown in bottom photo). All of these tubes are original as they were purchased from salvage yards and swap meets long before the reproduction tubes made the scene.

My guess is that the NOS black tube was part of an oil pan package (oil pan, dipstick, and dipstick tube) as in years past I have had a few NOS oil pans that included the dipstick, dipstick upper tube, and instructions to use the dipstick & tube with the oil pan.

As far as I know all 66-67 factory installed upper dipstick tubes were a natural metal finish.

I would appreciate any comments.

Dave

[John H.]

Re: Original 66-67 327 dipstick tubes - GM # 3876784

My guess is that the NOS black tube was part of an oil pan package (oil pan, dipstick, and dipstick tube) as in years past I have had a few NOS oil pans that included the dipstick, dipstick upper tube, and instructions to use the dipstick & tube with the oil pan.

As far as I know all 66-67 factory installed upper dipstick tubes were a natural metal finish.

I would appreciate any comments.

Dave

Dave -

I'd agree with your conclusions (assembly-line parts being natural). Could you post a length measurement (from the upset upwards)? Straight-line chord and along the curvature? Thanks!

[David L.]

Re: Original 66-67 327 dipstick tubes - GM # 3876784

Dave -

I'd agree with your conclusions (assembly-line parts being natural). Could you post a length measurement (from the upset upwards)? Straight-line chord and along the curvature? Thanks!

John,

The total length of the 3876784 tube is about 9 7/8" measured along the curve. The chord measurement (straight line, c/l end to c/l end) measures about 9 7/16".
The main tube measures about 0.43" in diameter while the top 2" of the tube measures about 0.38" in diameter.

I once owned a NOS 3900428 upper tube (for a 1967 Chevrolet 283,327) that was almost identical with the difference being about 1/8" shorter in total length than the 3876784 tube. The curvature was the same.

Dave

[John H.]

Re: Original 66-67 327 dipstick tubes - GM # 3876784

John,

The total length of the 3876784 tube is about 9 7/8" measured along the curve. The chord measurement (straight line, c/l end to c/l end) measures about 9 7/16".
The main tube measures about 0.43" in diameter while the top 2" of the tube measures about 0.38" in diameter.

I once owned a NOS 3900428 upper tube (for a 1967 Chevrolet 283,327) that was almost identical with the difference being about 1/8" shorter in total length than the 3876784 tube. The curvature was the same.

Dave

Thanks, Dave