Thread: TKO 3550 grinding in 4th
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Old 09-18-2011, 07:33 PM
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Join Date: Jul 2009
Location: Frisco, TX
Cobra Make, Engine: BackDraft, Keith Craft 408; 1967 GT500CR
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Default TKO 3550 grinding in 4th
Just returned from a great cruise in the Black Hills of SD with ten other Cobras. During the last couple of runs including the haul from Deadwood to the Rapid City airport, the trany would shift fine when cold but when warmed up it wouldn't go into fourth at speed--slow ok and it shifts smooth with motor off. I'm running a Keith Craft 408, Pro 5.0 in a Backdraft with GM Syncro fluid changed about 5,00 miles ago with 8,500 total miles on unit. Transport delivered the cars back to Dallas today and the problem seems to have worsened.Any ideas?
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