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70427ss May 13th, 02, 5:49 PM i have a 70 with 427 out of 66 vette with 4 speed m-21 the car starts to shake at 2000 rpm if i push in the clutch it quits it does it worse in 4th gear it seems i have receits from engine rebuild and it was balanced i havnt pushed it hard past the shaking point the clutch seems to be erratic in pressure and travel could clutch do this maybe out of balance blazer91 May 13th, 02, 8:57 PM had the same problem years ago in a 68 chevelle found the problem with the pilot bearing I replaced it and the shakes were gone Bow_Tied May 14th, 02, 12:38 PM 70427ss: Welcome to Team CHevelle - the best site on the net! I am not too sure. Things I would check: U-joints, rear trans mount (pilot bearing is a good one too) and clutch linkage. ------------------ Ron Cook TC Gold #1276 ___ ACES #5136 1969 300 Deluxe HTSS396 (http://www.chevelles.com/showroom/bow_tied4.jpg) The L35-325HP 396cid (http://www.chevelles.com/showroom/bow_tied3.jpg) 69 Memory Lane (http://www.chevelles.com/showroom/bow_tied.jpg) 1971 Malibu 2DR HT (http://www.chevelles.com/showroom/bow_tied_71Malibu.jpg) CanAm Chevelle Club (http://www.canamchevelles.com) _____________"Take my advice, I'm not using it." 1BadRat May 14th, 02, 1:34 PM Sounds like the clutch. The springs in the clutch plate can break/fall-out causing balance problems. If you remove the clutch, do like blazer91 suggested and check the pilot-shaft bushing. Good luck. ------------------ -Mark "Some of us got it and some of us ain't." -Deputy Sheriff Barney Fife TC# 717 ACES #1641 1967 Chevelle SS396/375 (http://www.chevelles.com/showroom/1BadRat2) 1967 RailVelle (http://www.chevelles.com/showroom/1badrat3.jpg) 1964 Chevelle 283/195 1975 Corvette 396/425 (http://www.chevelles.com/showroom/1BadRat1.jpg) "Wow, that's a mighty strong 350!" Rat Garage (http://www.chevelles.com/showroom/RatGarage.jpg) | ||