I just saw this video.

I have two takeaways:

1: At least we are looking at Chrysler engines instead of Chevies

2: This confirms what I have heard over many years of shop talk: the hemi turns on when other engine designs turn off. Not really surprising, but who builds stock displacement engines anymore? Make both 500" strokers, current heads, cams to compliment each type of engine and let them go. I would be very interested to see those results.


I don't have cable or satellite tv so the 5 bucks a month I spend on Motor Trend is worth it to me. It is far from perfect but I do enjoy many of the shows that are featured. Roadkill Garage is worth the price of admission on it's own.

5 K don't buy much these days.
I just finished a 408 stroker and with machining , I am well over that.
I also have a 405 inch R-3 / W-9 and I have well over that in the heads.

I just did

Fair enough lol. What did you build?

The 1971 440 Six Pack is going back in his 1971 Charger R/T , his first car

The Mopar Performance 426 Hemi is going in a AMC Gremlin on a future episode of roadkill

I was thinking about a 5.9 with a set of pistons, cam, and heads, vs 5.7 with something similar as far as cam and compression goes. Regular guy street stuff, not racing engines.

I did not know that Stage V made a dual plane? Somehow I suspect that a stock intake would have made more torque.

https://www.hotrod.com/articles/mopp-0310-hemi-426-crate-engine-dyno-test/

This is an article from Dulcich on Westechs dyno from 20 years ago. The otherwise stock 465 HP crate motor he used made WAY more low end torque with more cam with the crate motor intake manifold. How much do you want to bet its actually the same crate engine?

Wedge motor was a successful transition of a passenger car engine design adapted to racing. Hemi was a successful transition of a race car engine design adapted to passenger car use. Many OEM heads can support 500hp. The iron OEM hemi head shines when tasked to make far FAR beyond that level. Hemi is cool and legendary but If I could afford one run Id let those big ole heads shine with big cubes and high RPM.

what were the cams in the motors for the dyno test comparison?

They are having a Father's Day sale, $36 a year. Well worth it.

https://www.motortrend.com/news/motortrend-app-fathers-day-gifts/

Hydraulic rollers. Duration was 236° @ .050 intake, 241 @ .050 exhaust. Lift was .549 intake, .541 exhaust with 108° lobe separation.

let se, a single four barrel with stock smog heads versus two four barrels on a race motor, I wonder why the hemi does better in those cars
for those that don't know about the stock hemiroid valve train take a real hard look at them, they SUCK

Deal only available in the US. Bummer.

Exactly what I mean, no smog motor headed 440 even with the 6 Pac will run like a Hemi unless you restrict the Hemi (with hdydrolic cam) to run in the same rpm range. Build the 440 just like the race Hemi using the 906 head with a sheet metal intake (same mods as the S/S) no way you’re getting 8-900 HP out of that 440. First off those 906s will choke off at 6800 or less. Below the head, the 440 and 426 are the same, the head and above separates the men from the boys. Once the aftermarket wedge heads start flowing in the Hemi range then and only then will the engines match up.

If you get a VPN you can be a US customer as well.

Sorry I don't know any other way to say this but If you increase the TQ per cube on the 426 to the same TQ per cube X 440 it is only down about 20lbs to the 440. The HP would also go up a little from the bigger bore unshrouding the valves more and the CID increase. Another way to look at it is you can always multiply TQ with gears but you can not multiply HP, what the engine makes is what it makes. In the same car with either cubic inch equal or gearing adjusted for the lower CID the hemi will win.

In Chrysler, the hemi is the older engine by 7 years (1951 vs 1958), and the B/RB wedge is not a descendant of any hemi..
In general, the wedge (pushrods and rocker arms, closed chamber with quench, parallel valves tilted at an angle to the bore axis) only came into general use in 1949 (Cadillac and Olds, and still used today in LSX), but the Harley-Davidson hemi engines date to 1926 and every English bike mfg. had a hemi engine before WW2.

I've seen and built NHRA legal "stock" M.W. motors that will smoke a NHRA "stock" street Hemi motor
The ported 440-1 and a good set of B1 originals head will do that with ease on a similar prep wedge motor After all it comes down to the basics, how much air and fuel into the motor determines how much HP both motors will make

If you insure through Hagerty they give you motor trend for free.

MT jumped the shark years ago haven't watched any new content in 3 years.