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I like the fact that you are trying to compare a wedge to a hemi

two diffrent motors

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Two different motors, yes...but from the SAME
basic foundation or block dimensions.
HEMI - High rpm powerhouse.
WEDGE - Lower rpm torque monster.
Best battleground is between the 220ft and 1000ft marks (1/4 mi). A good lead margin there, you've won.

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I think what this poster means is that basically they took the 426 Max Wedge block and adapted Hemi heads to it. Yes they had to change the block as it would not hold up at first and was craking cylinders I believe. And they went to 4 bolt mains and have the Head bolts come from underneath. But it was developed from the wedge block. Ron

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Thank you Ron, for the careful observation! That's EXACTLY what they (Chrysler engineers) did for the high output/high rpm characteristics of this motor. "Fortification" to say the LEAST. I believe the main caps were "cross-bolted" into the block at #2,#3 and #4
main caps. The 64' Stage III 426 Max-Wedge motors might have been setup the same way. They also had the conventional 2 bolt setup on all 5 caps.