11-18-2003, 11:48 AM
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CC Member
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Join Date: Aug 2003
Location: Southeast,
CT
Cobra Make, Engine: ERA #375 427 S/C - 428FE - Toploader - 1968 AMX 390 Go Pack 4 Speed - My Daily Driver is a 2004 Crossfire
Posts: 872
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Not Ranked
Smith's Tach Replacing A SW Tach?
Gents:
I currently have a SW 8,000K tach which has been less than accurate and is suspect. I am thinking about replacing it with a new Smith's Cobra tach from Nisonger.
Has anyone done this conversion? Are there any things I need to know before commiting to this change? Nisonger states, that they can test and modify their Smith's Tach to work with the MSD-6AL multi-spark unit. If you have had Nisonger do this work, I would love to hear from you and what the outcome was.
Also, Nisonger tells me the SW is a 3 3/8" tach while theirs needs a larger 4 1/4" hole. Perchance, does anyone have a good suggestion as to how to cleanly make the dash hole larger by 7/8" without buggering it up? I suppose a drill mounted hole saw would be the best alternative?
Background:
428FE with MSD-6AL and Mallory Unilite breakerless (optical) distributor. Mallory active power module. Mallory ballast resistor. MSD tachometer adaptor #8910.
Current SW tach readout "bobbles" and "floats", especially when the engine is cold and when warm, the readout is just erratic and just seems to drive me crazy.
I just do not want to go from the frying pan into the fire, as it were.
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Art in CT
See My Website at http://www.lithicsnet.com
A car can massage organs which no masseur can reach. It is the one remedy for the disorders of the great sympathetic nervous system. Jean Cocteau 1889-1963, French Author, Filmmaker
Last edited by REDSC400; 11-18-2003 at 11:58 AM..
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