Why is my 5.0 shifting hard


Asked by Apr 30, 2014 at 08:48 PM about the 1988 Ford Mustang GT Convertible

Question type: Maintenance & Repair

Bought 5.0 few weeks ago and one thing I
was told was a racing clutch has been put
on, it gets tricky to put in reverse but shifted
relatively smooth for regular gears, up until
I drive on a hot day today and hard a f**k to
shift in traffic, especially to 1st gear, the
other day I got my fluids checked at jiffy
lube,  had them check my tranny, it's a
5speed btw. And they said it's leaking very
little but it's full.

9 Answers


Don't trust em, every used car I have bought the first thing I do is drain and refill all of the fluids check and replace the hoses and belts if needed. I would use full synthetic gear oil in the tranny and rear end and if it has a limited slip rear don't forget the additive. Red Line makes a good product.


I always been sceptical on how they go through this whole check list a page long for the signature oil change, checking all the fluids..for my jeep they some how checked literally all the fluids and changed oil in 20mins


How do I know I have the limited slip


There should be a little tag on the rear end that will state limited slip. If it is not there then jack up the rear end and block it, put trans in neutral, slide under and turn the driveline, both tires should turn in the same direction. If only 1 turns or 1 turns one way and the other turns the opposite then you don't.


Update....now that it's cooler out it shifts alot better, I'm not forcing it

Tracy Hooks

racing clutch my eye! I'll bet that it's a worn out clutch!

Tom Demyan

'88 GT's came factory with 8.8" limited slip difs. Like tennishoes said, inspect it. Tracy is right, sounds like the fingers on the clutch expand when warm causing the shifting issues. Time to replace the clutch.


Should I do regular oem style clutch or aftermarket


I don't plan on upgrading the engine, just rebuilding it in the future

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