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Roderick · 07-08-2018, 10:36 AM

Hi, I have a 1929 Roadster with 5.9 head, reground cam, electronic ignition with centrifugal advance, and downdraft Weber 32/36 carb. I plan on installing a Laycock overdrive unit scavenged from a Volvo into my torque tube. For this project I will be enlisting the help of my machinist friend Steve (little does he know). I have found some good info but I would appreciate any input. I do have a couple of questions:
1. Can anyone help me understand how to set up the reverse lockout switch so I can avoid backing up with the OD engaged? (Bruce in Ma, Jason in TX?) Part number/source for the switch, how to wire, photos of switch location in transmission cover?
2. Has anyone found a way to correct the speedometer? Is there an off-the-shelf reduction gearbox for the speedo?
Thank you very much for any help in advance.

07-08-2018, 10:36 AM	#1
Roderick Junior Member Join Date: Jul 2018 Location: Central Massachusetts Posts: 7	Volvo Laycock Overdrive DIY Hi, I have a 1929 Roadster with 5.9 head, reground cam, electronic ignition with centrifugal advance, and downdraft Weber 32/36 carb. I plan on installing a Laycock overdrive unit scavenged from a Volvo into my torque tube. For this project I will be enlisting the help of my machinist friend Steve (little does he know). I have found some good info but I would appreciate any input. I do have a couple of questions: 1. Can anyone help me understand how to set up the reverse lockout switch so I can avoid backing up with the OD engaged? (Bruce in Ma, Jason in TX?) Part number/source for the switch, how to wire, photos of switch location in transmission cover? 2. Has anyone found a way to correct the speedometer? Is there an off-the-shelf reduction gearbox for the speedo? Thank you very much for any help in advance.