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Here is the thread that goes with the picture SavageC20 posted.
http://67-72chevytrucks.com/vboard/s...d.php?t=638710
There is also a picture and specs on the Big Block adapter fitting for it. That is why you have the extra 16" piece on the line.
The 1/8" adapter in the picture below then screws into the BB port adapter and the compression sleeve nut on the end of your line screws into it. This fitting is the same for all GM engines. The only difference is that it screws directly into the block on the small block engines and into the port adapter on the big block engines.....
LockDoc