Powerglide vacuum modulator hard line

[Jeff S.]

'66 model year uses a 2-piece line from the transmission modulator valve to the vacuum source at intake manifold fitting. I'm missing the shorter 'top' piece which routes upward, then arcs around the distributor turning inboard & connecting to the vacuum port with a short piece of hose. I believe this line is 1/4" OD -- can someone verify this? If anyone has a pattern or drawing that might assist me in making the bend radii, that would be helpful.

Thanks,
Jeff

[Russ S.]

Re: Powerglide vacuum modulator hard line

Long Island Corvette part number 58-25C