Rostra Cruise Control - running off the HEI distributor Tach signal

[Kelvin]

This is a great post! I am replacing my OEM cruise with a Rostra once I switch out the steering column. The existing OEM Cruise is missing parts anyway and likely leaking vacuum.

I believe there is a post on this Forum about correcting the +- 2 mph creep - it’s a dip switch setting on Rostra. If I find those instructions in my notes, I will share here.

Ed

UPDATE: You may have already seen this dip switch setting but it has to do with 1 mph drop kwhen setting cruise.

View attachment 11526

Make sure the slack in the cruise control cable is minimal. It's a chain at the throttle bracket, so maybe you can take out one "ball" in that chain. I use Rostra in the GMC and my Datsun towd. I removed the slack, and they both worked better.