Re: DOES ANYONE KNOW THIS TACHOMETER ????
 

I think Mike's correct and it may fit both 66 & 67 and believe they were called the 'Rally Pack Tach'...then the 'Tick-Tock-Tachs' came out for 68?.

https://www.yenko.net/ubbthreads/imag...lins/beers.gif
~ Pete

Re: DOES ANYONE KNOW THIS TACHOMETER ????
 

Hi Pete..thats correct...I looked around on ebay and saw one as is possibly not working or for parts for 350.00..this nos piece should fetch atleast 500.00 with the original box...Mike.

Re: DOES ANYONE KNOW THIS TACHOMETER ????
 

The original owner & other guys that new our Y-Camaro swear it came from Yenko/Francis Chevrolet with aluminum heads...it sat in the Francis service department awaiting warranty work for some time on it's "special heads"...owner said he was making a healthy car payment on a car that he couldn't drive! Said they eventually just put a set of regular heads on it (cast iron)...

Re: installing L89 heads at dealer, 68 camaro
 

thanks for all the info, it looks like these heads were prone to failure. does an 68 l89 car have any other unique codes to look for? different sway bars? carb numbers? besides the block stamping ofcourse. and if 69 l89's we failing when they arrived at the dealer (using that one example) were they even worse at failing in 68? i know from owning the 65 396 vette i have, the early 65 l78 cars dropped a lot of their valves toasting the blocks (so i was told yrs ago), so that was fixed towards the end of production of the engine (and luckily my vette is at the end of the run and has its original block). from just reading this thread, i would think most of the l89 cars eventually toasted their blocks? unless tucked away and never beaten ofcourse.

Re: installing L89 heads at dealer, 68 camaro
 

------Bob,,,The broken valve spring problem didnt end in 65. My 66 427/425 Vette (bought new) suffered 2 broken valve springs in the year I owned it. Neither happened at any kind of RPM. Actually, both springs failed on cold start-up. Because of that the inner springs managed (at very low RPM) to get me to a dealer for warrantee repair, but a number of my friends wernt as lucky!!!......Bill S