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Old 01-03-2014, 08:23 AM   #14
MARKDTN
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Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,197
Re: lt1 and 4l60e gearing questions

Quote:
Originally Posted by mmiddle View Post
.... Also Consider replacing the water pump and Opto-spark NOW! Also, the steam line from the back of the heads must be routed to the return side of the radiator. (learning the hard way)
This is very good advice. In fact, you may want to look at converting to '95 up style Opti. If you Google around you will find info on doing it and why. The later version is much more reliable and not as suceptible to water. At least replace it and the water pump while it is out. Use Delco or top quality parts. The Opti is the Achiles heel of the LT1, but if you know about it, you can take steps to keep it in good shape.
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