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#1

Charger Discussion / Re: Charger w/ Modern engine? ...

Last post by Kern Dog - Today at 01:12:04 PM

When a guy shows concern over "economy" with a classic car, I have to wonder how much of a  car guy that he really is.
Does a 10 mpg number really scare off a car guy? How often do you drive it for that to matter?
Hey, it is good to get decent fuel economy but these cars were never built to achieve high MPGs. That was not the appeal.
These cars are popular for their styling, for the sounds, smells and feel of what was once the popular trend 50 + years ago. During the 80s and 90s, not many new cars could keep up with a properly built classic muscle car so many of us preferred a 1960s classic for our "fun car". The modern engines have really closed that gap and leaped over them to where many 100% stock newer cars blow the doors off most classics while getting twice the fuel economy with much better drivability.
I know of several people that have used late model Hemis in classic Mopars. I almost did one myself. I see the appeal but for me, fuel economy was not at the top of the list of reasons to consider it.

#2

Charger Discussion / Re: Charger w/ Modern engine? ...

Last post by 70 sublime - Today at 12:19:29 PM

Two cars side by side and same price I will take the original every time
You will have more pride in ownership with an old car and all the parts

If and when I want a new motor set up I will just find a modern Challenger with one in it

Old school all the way

#3

Charger Discussion / Re: Charger w/ Modern engine? ...

Last post by John_Kunkel - Today at 12:07:11 PM

I'm less concerned with economy than I am with drivability. New drive trains are simply more drivable...lots of power without fender-shaking cam lope and cantankerous carburetors.

#4

Charger Discussion / Re: Charger w/ Modern engine? ...

Last post by Drache - Today at 11:42:42 AM

I love classic muscle cars and it's hard to get over the carbureted V8 engine but sometimes a modern engine is just nice. Way better gas mileage with the same amount of power. Plug in a code reader to see how things are doing is always nice. Man trying to get some help tuning a carb in along with the timing on an old V8 in this day and age is nigh impossible, no one knows how anymore. The only problem with new cars is the computer controlling everything in the car. The idea of a classic car where the only computer controlled item is the engine itself is the best of both worlds in my opinion now.

#5

Charger Discussion / Charger w/ Modern engine? Good...

Last post by zacater - Today at 08:49:54 AM

Thinking of buying a charger that had a modern 392 engine. What more can I do to get a better economy with it? Is it even worth having a modern engine? It doesn't necessarily kill my love for a classic car if it's going to help with cty/hwy...

Thought I'd ask you guys what you think.

#6

Engine, Transmission, Rearend, & Exhaust / Re: Dealing with dieseling-run...

Last post by Kern Dog - Today at 03:11:40 AM

Did it run-on when you had your flat tappet cam in it before?

Yes, it did with the Lunati. It was a lot bigger than what I have in the car now.
Oddly, I'm having trouble remembering if it was dieseling that much when I had higher compression and different pistons in it before I re-rebuilt the engine in 2022.

#7

Engine, Transmission, Rearend, & Exhaust / Re: Dealing with dieseling-run...

Last post by Kern Dog - Today at 03:09:18 AM

Sounds like you've covered most of the basics, do you have some type of insulator/spacer under the carb? Fuel pressure regulated with bypass or? The plugs seem like a good heat range to me 

What's the idle and total timing? With 800 RPM idle I would think the idle transfer slots are looking good. Four corner idle carburetor?

There is no room for any carburetor spacer or insulator.
The fuel pump is a high volume Carter. It pushed 11 psi at idle so I added a regulator set to 3.5 psi at idle, 7 psi total. Everything over 3.5 at idle and 7 at WOT goes back to the gas tank. This car never vapor locks.
The timing curve....



Yes, it is a 4 corner idle carburetor. It idles under 14.0 AFR.

#8

Engine, Transmission, Rearend, & Exhaust / Re: Dealing with dieseling-run...

Last post by Mopar Nut - Today at 01:45:27 AM

Did it run-on when you had your flat tappet cam in it before?

#9

Engine, Transmission, Rearend, & Exhaust / Re: Dealing with dieseling-run...

Last post by metallicareload99 - Yesterday at 01:22:01 PM

Sounds like you've covered most of the basics, do you have some type of insulator/spacer under the carb? Fuel pressure regulated with bypass or? The plugs seem like a good heat range to me 

What's the idle and total timing? With 800 RPM idle I would think the idle transfer slots are looking good. Four corner idle carburetor?

#10

Engine, Transmission, Rearend, & Exhaust / Re: Dealing with dieseling-run...

Last post by Kern Dog - Yesterday at 12:49:31 PM

Thanks. That feels like a "cheat" for me. I know that it does the trick but it should just shut down normally.
The idle stop solenoid idea is certainly a worthy one that I am considering.