Looking for easy power from 426 Hemi

[biomedtechguy]

Also, I am proud to own the most powerful example of the Mopar wedge engine w/my 440 6bbl (other than the Max Wedge)
but
congratulations on your 426 HEMI!
THE LEGENDARY engine of the muscle car era!

 

[Beach Goat]

THEN add the 4.10 gears!
That's what I did on my 70 Roadrunner.
440 6bbl, went from 3.54 to 4.10 with the 5 speed. 70 mph RPMs went from 3,500 in 4th w/the 3.54+4 speed to 2,750 in 5th w/4.10s
BIG ? before you do anything...
Can you get traction now??
I don't regret changing to the 4.10s because it was the time to do it w/the transmission swap, but I have been fighting wheel spin forever.
If anything, the 4.10 helps because I roll off the start and floor it.
Once I get hooked, I believe I'll be in the 12s
Get traction FIRST.

Yeah I just drove mine home from work (Richmond to Virginia Beach, ~100 miles) and used 6 gallons of gas. You do the math! Not bad for a 580" motor and 4.10s!

For traction, I run Nitto NT05-R drag radials on the street. They bite even in first gear.

 

[biomedtechguy]

For traction, I run Nitto NT05-R drag radials on the street. They bite even in first gear.

That's great. They look "sticky".

I haven't seen these before, and they wouldn't work for me as a street/strip tire, but neither did the Nitto 555 drag radials I had on a Conquest TSi. I lost control in a light rain with fairly new 555 Nittos.
I've been using Toyo Proxes TQ drag radials on the street and at the 1320. They're GREAT on the street and have a safer looking tread void than other drag radials. My traction problems are because of several factors that I am addressing as time and money permit.

Not bad for a 580" motor

What does your 580 cu in motor consist of regarding block, crank, pistons?
That is a BEAST!

 

[Hemirunner]

Yeah I just drove mine home from work (Richmond to Virginia Beach, ~100 miles) and used 6 gallons of gas. You do the math! Not bad for a 580" motor and 4.10s!

For traction, I run Nitto NT05-R drag radials on the street. They bite even in first gear.

I was just out there with the Hellcat but a little better mileage, lol.

 

[biomedtechguy]

I was just out there with the Hellcat but a little better mileage, lol.

From the dark lackluster "performance" of the mid to late 70s through the 80s, to the amazing performance of today's muscle and performance oriented engines.
My "Police E-58" 360 V-8 4bbl on my 79 Aspen R/T, was rated at 190 some odd horsepower which was a far cry from the 375HP/480 TQ of the 440 HP engine in the 71 Charger R/T I had.
Lots of us wondered, without much hope, if performance would ever return.
The horsepower that today's MOPAR engines produce is amazing. The V6 in my 2017 Caravan puts out more horsepower than that 360 did!

 

[Dragon Slayer]

I agree with the poster that said you really do not know what you have until you open it up. Granted you can add gears, header, different carb and manifold, but if you want to start changing cam and other things, you need to have the motor blue printed to get the most out of it. If this motor was put together to sell a car, who knows what was used. Block decking, volume of heads, matching of manifold to head intake ports, type of pistons, etc... Take it to a dyno shop and see what you have to start at. That might tell you how well the motor was built.

 

[Beach Goat]

What does your 580 cu in motor consist of regarding block, crank, pistons?
That is a BEAST!

Thanks! It is a hell of a lot of fun on the streets. Soo much instant torque.

It’s a Mopar Mega Block with a 4.535” bore and 4.5” stroke with diamond pistons and eagle crank. 264/[email protected] .561/.571 lift solid roller comp cam spec’d by Dwayne Porter for long spring life and reduced valve adjustments. 337 single plane manifold, 1000cfm Holley four barrel with mechanical secondaries.

 

[sean1970ss]

Hemi's like compression. A split duration would turn it into a monster and make it think it had 13.1. Headers/cam hydraulic roller/carb

 

[biomedtechguy]

eagle crank. 264/[email protected] .561/.571 lift solid roller comp cam spec’d by Dwayne Porter for long spring life and reduced valve adjustments

I am not concerned about vacuum because I have manual brakes and prefer them, and I absolutely LOVE the sound of a choppy cam, especially with my Doug's electric cutouts open.
I am sold on the ESP finish on Eagle cranks and rods, so I'm glad you have Eagle, and they are in Mississippi, right next to Louisiana and I would like to visit them for a tour around the time I'm selecting components. TrickFlow 240s on a factory RB block unless I have a lot of money and confidence in the water jacketed aluminum Indy MAXX block. I'd like to get that block unless someone says not to for some reason, which would only be if there's a problem with longevity, cooling, or using it for long periods of stop and go driving, highway trips, etc.
I also have to take IQ52 (Jim LaRoy) advice on roller lifters and make them solid vs hydraulic, so less need for adjustment would be a big plus.
Anyway, thanks a lot for the info!