It works The Holley Heat Dyne Electric Choke Delay Kit.
I installed it near the Olds 425 Front water log crossover casted into the Offenhauser Intake manifold.
As the engine coolant temp warms up the choke progressive slow opens at a nice linear rate.
Before the choke was open full in 20-30 seconds.
No more backfire on engine startup cold and having to hold my foot on the gas pedal for high revs to warm the engine up.
It appears the thermistor inside of the Heat sensor is calibrated for the 160F thermostat I am using.
Winter now I could use a 180 F T-stat for more interior heat but 160 F keeps me warm yet driving down the road.
Everything feels slow & weak after driving the 1963 Gp & WOT with the 425 Olds Super Rocket V8.
120 mph comes up fast.
Remember the TA being 10 times faster yet.
These electric Holley chokes are impossible to dial in for Midwest winters without the Holley Electric choke delay kit.
Well worth the $40.00.