Hot Rod magazine added 259hp with a 8-71 to a 426 crate motor- 753hp
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383 Super Commando V8 - 335 hp. 440 +6 - 390 hp. 426 Hemi V8 - 425 hp.
No, the Hemi is a 426.
426
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well the 426 hemi has 425 horsepower stock and also the 6.1 hemi has 425 and the 5.7 hemi has about 380 horse power it can run the quarter mile around high 13.00 seconds in a dodge ram mabye 15.00 because of the weight of the truck
the 426 hemi is the best and only true hemi, these new so called hemi engines are really not true hemi's.
The 426 Hemi developed 425 H.P. The 440 developed 390 H.P. They both developed 490 lb/ft of torque. Installed in the same body with the same gear ratio and same transmission the 426 Hemi will be faster.
The biggest engine available based on cubic inches was the 440 C.I. However, the engine with the most available horsepower was the 426 Hemi.
It depends on the car. But generally speaking, yes 426 is quite a bit or horsepower.
426 hemi
The # 1 position on the distributor cap of a 1970 - 426 Hemi : faces to the front and slightly towards the passenger side