Making tach work for 72 w/ electronic ignition
03-16-2003, 08:16 PM
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Making tach work for 72 w/ electronic ignition
We just had our ignition changed to electronic in our 72. Can anyone please tell us how to get the orginial tach to work or what year tach will work and fit into the orginial opening ? Thanks, Bob :confused:
03-16-2003, 08:28 PM
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Re: Making tach work for 72 w/ electronic ignition (cvettego)
Hi Bob did you change your distibuter or did you put a conversion kit into the original distributer. Dave
03-16-2003, 08:28 PM
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Re: Making tach work for 72 w/ electronic ignition (cvettego)
A 1975 tach will fit, it is an HEI tach, good luck finding one. The only other alternative is to have your old tach drive distributor converted to HEI. Dave's Small Body HEIs will do the job for about $175.00
http://www.davessmallbodyheis.com
Or you can convert it yourself by putting in a Mallory or Crane ignition module.
http://www.davessmallbodyheis.com
Or you can convert it yourself by putting in a Mallory or Crane ignition module.
03-16-2003, 08:31 PM
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Re: Making tach work for 72 w/ electronic ignition (cvettego)
If you just converted your distribitor to electronic, the tach will still work.
But, if you changed the distribitor then it was 75 that changed to electronic tachs. I think the 75-76 tachs will fit.
Hope this helps.
Terry
But, if you changed the distribitor then it was 75 that changed to electronic tachs. I think the 75-76 tachs will fit.
Hope this helps.
Terry
03-16-2003, 08:47 PM
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Re: Making tach work for 72 w/ electronic ignition (74BBcherryred)
HI Dave, We had the work done. He put in a new electronic distributor and changed the ends of our 8mm wires so they would work. Thanks, Bob
03-16-2003, 10:45 PM
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Re: Making tach work for 72 w/ electronic ignition (cvettego)
You are pretty much out of luck in making our 72 mechanical tack work with the electronic distributor you had installed. Did your installer tell you the electronic distributor change out would not support a mechanical tach? About the easiest thing to do is buy a tach and mount it on the steering column. Another option is buying the electronic tach from a 75 or later Corvette with the same style tach and switch it out with your mechanical tach. Electronic ignition distributors with mechanical tach drives are also available.
03-16-2003, 11:04 PM
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Re: Making tach work for 72 w/ electronic ignition (wombvette)
Hi Bob the electronic distributer i put in my 74 454 is an msd with the mechanical output connector for my factory spedo cable what name brand did he put in yours and does it have the threaded piece for your old cable to go on to Dave :grouphug:
03-17-2003, 02:10 PM
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Re: Making tach work for 72 w/ electronic ignition (74BBcherryred)
We will get the Vette back from the paint shop sometime this week ( I hope) and I'll look at it better and let you know just what it is. Thanks for everyones help. Bob
03-17-2003, 02:34 PM
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Re: Making tach work for 72 w/ electronic ignition (74BBcherryred)
Hi Bob the electronic distributer i put in my 74 454 is an msd with the mechanical output connector for my factory spedo cable what name brand did he put in yours and does it have the threaded piece for your old cable to go on to Dave :grouphug:
03-17-2003, 04:05 PM
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Re: Making tach work for 72 w/ electronic ignition (cvettego)
Electronic tach from either 75, 76 or 77 vette will fit & work & look almost like original ... hardly anyone could tell ... only those three years. I got a good one off eBay for $50 ... but ya never know about eBay.
03-17-2003, 04:12 PM
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Re: Making tach work for 72 w/ electronic ignition (85_togo)
Hi Bob the electronic distributer i put in my 74 454 is an msd with the mechanical output connector for my factory spedo cable what name brand did he put in yours and does it have the threaded piece for your old cable to go on to Dave :grouphug: without taking the distributor out, how can you tell what kind is it (please don't tell me i need to take it out!!!) the GF has a 74 and the speedo needle is not only gone, but it starts at 100MPH as the zero point! and the tach also does not work! what color are the wires for the tach, and where is their exit point from the passenger compartment????
