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78 z auto to 5 speed conversion

576 Views 6 Replies 7 Participants Last post by  jeff g 78
What is the estimate in converting a 78 z with an automatic to
a 5 speed stick. Can a person with decent mechanical ability do
it ones self (I used to do clutch replacements on my 78z some years ago when I owned one).

Is there any welding involved, or are the parts bolt on? I know the clutch is hydraulic so the linkage shouldn't be that bad im guessing.

Also, are the parts farily available?

What are the major issues, and what do you think the total conversion would cost.

I am looking at a 78 z in NY and it looks real good except for the fact it is an auto. I really want a 5 speed but cant find a nice one in my geographic area and I'm getting tired of looking!

Any help is appreciated
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Don't forget a pilot bearing! Your crank will not have one with the auto. It is a simple brass bushing that goes in the end of the crankshaft to align the trans input shaft.

Also, you might have to trim the tunnel just a bit to get full range on your shifter. This can be done after everything is in. Just row it through the gears and make sure you have plenty of clearance in all gears. I think the later cars have the proper cutout though. I did have to trim my '72 slightly when I did the conversion.

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