Try refreshing your browser, or tap here to see other videos from our team.įirstly, “Cobra Jet” is the coolest engine name ever. This Chrysler dyno sheet from decades ago and this close-to-stock dyno session of a new 426 Hemi both put the gross horsepower rating at about 470 horsepower without full exhausts and other engine-driven accessories. The 426 street Hemi was rated at 425 horsepower from the factory. Is there any engine that has more myth and legend surrounding it? The mystical Hemi is able to conjure wild stories from enthusiasts whenever the name is mentioned. MoPar 426 Hemi 1969 Charger Engine: An optional 426 cubic inch hemi engine putting out 480 horsepower powers the 1969 Dodge Charger 500 on display at the Vancouver International Auto Show It’s worth noting that the engine in the video doesn’t have parasitic losses like a power steering pump or full exhaust system, but the true output of an L88 at the flywheel when fully dressed is around 510 horsepower. As can be seen in the video below, a stock recreation of an L88 engine made 557 horsepower.
The engine actually did make 430 horsepower at 5,200 rpm, but GM neglected to mention that its power peak was around 6,500 rpm where it made over 500 horsepower. The engine was laughably underrated at 430 horsepower at 5,200 rpm but GM wasn’t completely dishonest. The L88 used a high-overlap cam and a crushing 12.5:1 compression ratio to become one of the most powerful engines of the muscle car era. Auto Machine transform a 460 into a stump-pulling 501ci stroker with over 500 lb-ft of torque from 2,300 to 5,300 rpm.This is the meanest “rat motor” of them all. Let’s watch as Donnie Wood and Steve Chmura of R.A.D. And thanks to Edelbrock’s Power Package Top End kit, the usual guesswork associated with selecting the right combination of heads, cam, and induction has been eliminated. Thanks to the fact Ford started stuffing 460s into pickup trucks and Lincoln luxury barges in the smog-’70s, there are millions of available core engines out there just waiting to be poked and stroked into top-notch street and strip performers. Our 1971 block has the 10.3100-inch deck height which was machined 0.010 inch. Be sure you know which deck you’ve got before ordering parts to avoid piston-to-head contact and unwanted compression ratio errors. Each subsequent deck height increase lowered compression by roughly ½ point as Ford entered the smoggy ’70s. Any healthy 429 or 460 block can be made into our 501 with a 0.0305-inch overbore and 4.3905-inch bore diameter. Ford 429 and 460 blocks share the same 4.36-inch bore diameter but juggled stroke to get 429 (3.59-inch stroke) or 460 (3.85-inch stroke) cubic inches.