71 timing and compression

[Ed Levine]

I have heard all types of advise in reference to setting timing for best performance using advance timing light etc. Please give me your ideas in how I should go about testing and setting my timing. What is the best timing light to use and where is it available from? Also what should I be happy with on my compression. I have the orginal LS5 engine with about 108,000 miles on it.

[Doug Flaten]

Re: 71 timing and compression

Sears has some dial back timing lights. On sale, I think they are about $60.

[Tony H.]

Re: 71 timing and compression

Ed,

If you engine internals are all original, I suggest you change out your original timing chain and gears. The gears were made of nylon and can wear out before the chain. The results can be catastrophic.

You might want to get the last two issues of Corvette Enthusiast magazine (formerly Cars&Parts Corvette). John Hinkley has written a couple of nice articles that explain the distributor timing for our older cars.

[Tony H.]

Call GM Customer Service 800-222-1020

Another helpful tool will be the specification for your car. You can get the complete AMA Specifications for your car for free by ordering the restoration package from GM Customer Service at 800-222-1020. My package came in today. I ordered it last week. Good luck.

[Ed Levine]

Re: 71 timing and compression

thanks for info. I will have to get on this. Do you know wher I can get Vette enthusiast old mags? Do you know their website?

[John Walker]

Re: 71 timing and compression

For Duke or Clem; I have heard the dial back lights do not work properly with HEI, any truth to this?

Thanks John

[Tony H.]

Re: 71 timing and compression

Ed Try this link for Corvette Enthusiast magazine.




Corvette Enthusiast Magazine

[Duke W.]

Re: 71 timing and compression

My Sears/Acton Dial Back works just fine on my Cosworth Vega that has a GM HEI system!

Duye