08-05-2010, 08:50 AM
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CC Member
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Join Date: Jul 2008
Location: Driftwood,
TX
Cobra Make, Engine: Contemporary Cobra, 427 side oiler
Posts: 1,850
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Not Ranked
Great post Brent.
Quote:
Originally Posted by jhv48
If the input shaft on the TKO 600 is too long, what symptoms will the trans exhibit? Hard shifting? Grinding?
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Well for starters the transmission might not mate up into the engine all the way, forcing you to pull them together which is verboten. Hard shifting and vibration may occur as well.
Quote:
Originally Posted by jhv48
Will I still be able to bolt the trans and bellhousing completely to the engine if the input shaft is too long?
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Maybe, but you'll be putting thrust on the crank as well as the transmission input bearings and both are a big no-no.
Quote:
Originally Posted by jhv48
Will it eat up pilot bushings or just bottom out against the crank?
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Yes. The pilot shaft tip will chase itself around the concave crank hole and it will wallow out the pilot bushing.
Quote:
Originally Posted by jhv48
What should the clearance be between the engine and the input shaft after installation?
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I could never find a hard # on this so we went for 3/16". We mounted the BH up tight and stuck a thin rod into the center of the bushing hole and measured out to the face of the BH. We then did the opposite measuring from the transmission mounting surface out to the plane of the input shaft tip. I have read that some just grind it off but we chose to remove the shaft and have it machined to length and had the tip chamfered.
Your mileage may vary. 
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