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**70STOVEBOLT** · 03-27-2020, 08:40 PM

Nick you should be able to spin the converter even after it is engaged with the oil pump lugs, which are the squares you are talking about. The input shaft should spin freely all the time. The TC will move fore and aft even while fully seated. I would use the correct bolts, just to be safe. They are grade 5 and flanged, as Tony stated. Hope this helps.

Mark

03-27-2020, 08:40 PM	#9
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,241	Re: What needed hardware, torque converter to flex plate Nick you should be able to spin the converter even after it is engaged with the oil pump lugs, which are the squares you are talking about. The input shaft should spin freely all the time. The TC will move fore and aft even while fully seated. I would use the correct bolts, just to be safe. They are grade 5 and flanged, as Tony stated. Hope this helps. Mark __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear