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usnabill · 11-10-2021, 08:45 AM

My 66 has a healthy 250 motor, a 3 speed Saginaw, and (I believe) 4.11 gears. It really screams at highway speeds- not having a fan clutch probably has something to do with that. If I wanted to switch to a 5 speed, is a TKO or TKX overkill or a good choice in my application?

11-10-2021, 08:45 AM	#1
usnabill Registered User Join Date: Nov 2011 Location: Memphis, TN Posts: 55	Tko/tkx My 66 has a healthy 250 motor, a 3 speed Saginaw, and (I believe) 4.11 gears. It really screams at highway speeds- not having a fan clutch probably has something to do with that. If I wanted to switch to a 5 speed, is a TKO or TKX overkill or a good choice in my application?