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Jim Caughlin · 12-09-2014, 12:12 PM

AS few years back, we swapped from a C6 to a C4 in a 2900# bracket car, small block, both trans were 8" converter, no trans brake. It went .25 quicker. Wasn't a perfect back to back test but pretty close. I have no question that there would be significant improvement switching to the C4. Lots of good parts for C4's these days, no reason for strength issues to be a problem.

12-09-2014, 12:12 PM	#5
Jim Caughlin Senior Member Join Date: Mar 2002 Location: Woodburn, Or Posts: 635 Likes: 70 Liked 693 Times in 208 Posts	Re: C4, C6 Question AS few years back, we swapped from a C6 to a C4 in a 2900# bracket car, small block, both trans were 8" converter, no trans brake. It went .25 quicker. Wasn't a perfect back to back test but pretty close. I have no question that there would be significant improvement switching to the C4. Lots of good parts for C4's these days, no reason for strength issues to be a problem.