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**66 C10 383** · 05-23-2017, 10:15 PM

I don't know anything good or bad about the HT383. I do know they are not the same as a conventionally built 383 is. Most 383's are built using a 4.030 bore and a 3.75" stroke crank. Chevy's 383's are built with a stock 350 4.000" bore and a special 3.80" crank. The pistons and crank are unique to the Chevy version.

05-23-2017, 10:15 PM	#8
66 C10 383 Senior Member Join Date: Aug 2012 Location: Somewhere In So. IL. Posts: 398	Re: 383 questions I don't know anything good or bad about the HT383. I do know they are not the same as a conventionally built 383 is. Most 383's are built using a 4.030 bore and a 3.75" stroke crank. Chevy's 383's are built with a stock 350 4.000" bore and a special 3.80" crank. The pistons and crank are unique to the Chevy version. __________________ Doug Old Build Thread - 383/T56 http://www.67-72chevytrucks.com/vboa...d.php?t=540838 Updated Build Thread - Modern Relic - 66 C10 536 Dark Aqua 5.3/4L60E - BTR Stage IV Truck Cam - Vintage Air - Dakota Digital http://67-72chevytrucks.com/vboard/s...d.php?t=778784