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Print in friendly format Send this term to a friend  4L60
The automatic from 1992-1993. The same as the 700R4, just has a different name.

Either way, they are junk. There are some minor differences on a ...
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Re: Bitter Sweet Day at the Drags

Subject: Re: Bitter Sweet Day at the Drags
by biggrizzly on 2011/1/10 1:10:11

Quote:

95vette wrote:
I suppose by now Don has dropped the pan (or pulled the opti apart) and checked it out. Wonder what he found???


I was looking at this old thread from last summer. I thought I'd put some more information down here to answer some questions if someone comes reading it again in the future.

It is the first week in January and the block is on the milling machine getting worked on. I didn't take pictures yet but almost every bearing surface on the crank was trashed beyond repair. My builder even called me on the phone to ask if the engine had oil in it when this happened. (it had a full pan of new Mobile1)

The MSD Opti was fine with no damage. It looks like new still.

I have decided to go with a mild 383 build. I'm having the heads port matched as they came from Lloyd they were not completely matched and my builder feels that the runners are a little too smooth for his liking as they show signs of fuel puddling in some areas. Also, we found one valve with a hairline crack. Some of the valve seals were showing signs of wear with less than 5,000 miles on them. The heads are getting a new valve job again and new seals. Changing to Manley valves and getting rid of the Ferrea valves. So the heads will also be completely redone by Jackson Racing Engines here where I live. Since my builder knows I want to autocross the car and perhaps do some Friday at the Track events he recomende a better than stock oil pan and better pump. So I ordered a Champ road racing pan.

PeteK is doing his magic to the transmission and Mick Stevens will be doing the tuning for me.
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