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Discussion Starter #1
I have a new large body HEI plugged into a new OER 67 tach. I've read about the potential problems w/ this set up and plan to make up a filter.

My question; I there danger to the tach if I try to fire the engine w/ out the filter? Can I try it or will it burn up the tack once I hit the key?
 

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I have a new large body HEI plugged into a new OER 67 tach. I've read about the potential problems w/ this set up and plan to make up a filter.

My question; I there danger to the tach if I try to fire the engine w/ out the filter? Can I try it or will it burn up the tack once I hit the key?
Most OER brand tachs are not compatible with HEI systems...check their website for details. I would NOT fire it up without a filter unless you know for certain!

I purchased another factory repo brand for my 69 from the Parts Place on EBAY that is compatible with a factory HEI dizzy. It fits the dash, works perfectly without the filter and calibrates itself from 0 to full scale before taking the reading. This was covered in a previous post a few days ago and by the way, the EBAY Parts Place ad also offers all 67-69 redline options compatible with HEI. :thumbsup:
 

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Discussion Starter #3
Gotcha. I wasn't clear on the failure mode. On the very bright side, I started motor for the first time in 8 years. Felt good.
 
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