DiscoDave Posted January 29, 2017 Share Posted January 29, 2017 Hi guys. I have a Manta A with a Red Top Turbo, Type 9 Ford Capri 2.8i 5 speed gearbox and Manta B GTE differential. My problem: when cruising at anything over 50MPH the engine is screaming it's head off. Is it possible to change the ratio of the differential? Has anybody got any experience in this. Cheers Dave. Quote Link to comment Share on other sites More sharing options...
lamchop77 Posted January 30, 2017 Share Posted January 30, 2017 Sounds to me like the diff ratio isnt standard. 3.44 is std ratio should give you approx 53 mph in 4th at 3000 rpm, thats with 195/60 r14 tyres. Give me your tyre size and revs your doing at 50 and i should be able to tell you the diff ratio. Chris Quote Link to comment Share on other sites More sharing options...
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