6K/8K Tach
 

Is this the correct tach for a late production Z28/L78/L72 car?
When was the change date from the 6K/7K tachs?
Thank you in advance for your replies.

Re: 6K/8K Tach
 

6,000 - 8,000 is 'mid to late' (from http://www.camaros.org/interior.shtml#69Z28Tach).
Not sure when the change in upper rpm redline from 7,000 to 8,000 occurred, but I have Jan/Feb in mind.

Re: 6K/8K Tach
 

Thank you.
Is this a Z only tach, or would it have also been used in the L78/L72 cars?

Re: 6K/8K Tach
 

AFAIK, the 6k/8k tach was also used on the solid lifter BB engines as well as the Z/28. I looked up the number on the rear of your tach and the February 1969 P&A Catalog lists 6469780 under 9.750 Tachometer Assembly as:
'69 CAMARO w/console gauges, speed warning (302)'
So, if I read that correctly, the tach you pictured is Z/28-specific, although I believe that the original assembly would have included the harness, filter etc, so the difference between it (6469780) and the non-speed warning Z/28 and L78 version (6469383) may lie there, the assembly, rather than in the tach head itself.......

Re: 6K/8K Tach
 

The 8000 rpm tach was Z/28 only and entered production early February 1969. It was phased in; at the time some cars were built with the 6000/7000 rpm tach. A very few later production Z/28s had an 8000 rpm tach with a 6500 rpm red line.

Mechanical lifter big blocks used the 6000/7000 rpm tach.

Re: 6K/8K Tach
 

For whatever reason, the L72/L78 Camaro used 6K/7K tach throughout the entire production year, including the "extended model year" I would love to know the reason; seems like extra inventory item to me.

Re: 6K/8K Tach
 

In stock form none of those engines would reach 8,000 rpm more than once. Chalk it up to marketing.

Re: 6K/8K Tach
 

My 05E Z has a 6 / 8 k red line and my 11 A of 69 has the same you don't get any later than this car so I would say they didn't have a 6500 to 8 k tack

Re: 6K/8K Tach
 

The 6500/8000 rpm indeed does exist; I have seen several. They are very rare and not all late builds have it. Earliest one in the CRG db is N709xxx.

Re: 6K/8K Tach
 

Car was on ebay a few weeks ago.

https://www.yenko.net/ubbthreads/pics...ate_z_tach.jpg