ram 6.4 hemi

[MikePA]

Is the 6.4 Hemi a push rod engine?

Can a pushrod engine have VVT?

Yes and yes.

Click Here.

 

[Diamondpilot]

I researched stroker engines, some time back and came across a fully documented build of s stroked 350 (380 I think) where the guy built it for trucks. It produced like 385hp and 450tq. The nice part was on his dyno sheets. The tq was 400 at only 2000 rpm, and gradually worked to 450 at around 3500.

That would be perfect, and then gas engines could be far more useful in a working truck. Of course they would still have to offer the high hp high rpm models for folks that never actually use it for heavy work, but like to brag about numbers.

The big downside is mpg's, as I am sure they will not be the greatest, even empty. Such was the case with Fords old 300ci inline 6. Great pulling power, not much top end, and not much for mpg, but a great work engine.

With all the computer controls and advances in injection systems, maybe they can make some big strides towards correcting that.

We run lots of strokers. We punch out 350 GM'S to 383 cu in. They make great boat motors. We get 320HP at the prop and about 350 at the fly wheel. It's not about HP, but torque, and more importantly where it makes that torque.

This is a big reason why I have liked Ford Trucks. As a whole the usable torque is better then what the competition has. This usable power is also why I bought a Nissan Titan. I can honestly care less about empty mpg. I have a car for that. I want grunt and reasonable economy when towing.

Chris

 

[sd455dan]

I researched stroker engines, some time back and came across a fully documented build of s stroked 350 (380 I think) where the guy built it for trucks. It produced like 385hp and 450tq. The nice part was on his dyno sheets. The tq was 400 at only 2000 rpm, and gradually worked to 450 at around 3500.

That would be perfect, and then gas engines could be far more useful in a working truck. Of course they would still have to offer the high hp high rpm models for folks that never actually use it for heavy work, but like to brag about numbers.

The big downside is mpg's, as I am sure they will not be the greatest, even empty. Such was the case with Fords old 300ci inline 6. Great pulling power, not much top end, and not much for mpg, but a great work engine.

With all the computer controls and advances in injection systems, maybe they can make some big strides towards correcting that.

If you like the Chev 383 you would Love a Pontiac 455 set up -even 20 years ago it was possible to build a gas pump friendly version producing almost 400 ft. lbs at 1000 rpms and maintaining over that amount to 5000 + rpms. But i am biased... and with the epa regs about the only way to do it would be to buy a 1976 or older truck and shoe horn it in...

IMO the 400 ,421,428 and 455 would have been superior engines to the the chevies used in the GM truck line back in the day...

 

[Reyer Farms]

That's a nice pickup. My wife had a company truck like that a few years back, it had the. 5.7. It was fun to drive. She did not like the brakes, kinda spongy loaded. It got 12 mpg period. How is the tow/haul and braking towing ? Compared to others.
Neighbor stop by one day and told me we were going to have a girl. I asked why and he said that pickup rode so bad it would shake the.......... Off a lil boy.
We had a little girl.

 

[mowin]

That's a nice pickup. My wife had a company truck like that a few years back, it had the. 5.7. It was fun to drive. She did not like the brakes, kinda spongy loaded. It got 12 mpg period. How is the tow/haul and braking towing ? Compared to others.
Neighbor stop by one day and told me we were going to have a girl. I asked why and he said that pickup rode so bad it would shake the.......... Off a lil boy.
We had a little girl.

Congrats on the lil girl.
The tow haul worked like all of my other trucks. The ram definitely out towed my '11 GMC with 6.0 and 3.73's. Braking was great also. Truck felt solid and handled the load very well.

 

[handirifle]

If you like the Chev 383 you would Love a Pontiac 455 set up -even 20 years ago it was possible to build a gas pump friendly version producing almost 400 ft. lbs at 1000 rpms and maintaining over that amount to 5000 + rpms. But i am biased... and with the epa regs about the only way to do it would be to buy a 1976 or older truck and shoe horn it in...

IMO the 400 ,421,428 and 455 would have been superior engines to the the chevies used in the GM truck line back in the day...

For a few years I had a '68 Chevy 1/2 ton, with the 396 in it. 325hp, no idea how much torque, but it didn't make one snits bit of difference when I loaded the cab over camper on it. I got 10 mpg with that truck no matter what it was doing. Power wise those were great motors, but that was where it ended, IMHO.

 

[Reyer Farms]

Thanks mowin. That's great about the truck doing like you want. I prefer owning a gas versus diesel pickup. I know that flies in the face of popular opinion. Owning a diesel now is a hassle. I figure I can replace my gas engine for the cost of diesel upkeep. The gas engines now are pretty impressive too. Keep enjoying that new Ram!!

 

[john_bud]

Thanks mowin. That's great about the truck doing like you want. I prefer owning a gas versus diesel pickup. I know that flies in the face of popular opinion. Owning a diesel now is a hassle. I figure I can replace my gas engine for the cost of diesel upkeep. The gas engines now are pretty impressive too. Keep enjoying that new Ram!!

Used to be that the difference in power was huge from weak gas to stout diesel. And you could easily tune the diesel for heaps more torque. And you got all that for not much more $$, mileage was 50% better and fuel was 20% CHEAPER. Now gas engines get nearly as much HP and torque, the diesel engine cost is huge up front and the fuel costs 20% more and you only get a minor bump in mpgs. My current diesel may be my last .

 

[handirifle]

Used to be that the difference in power was huge from weak gas to stout diesel. And you could easily tune the diesel for heaps more torque. And you got all that for not much more $$, mileage was 50% better and fuel was 20% CHEAPER. Now gas engines get nearly as much HP and torque, the diesel engine cost is huge up front and the fuel costs 20% more and you only get a minor bump in mpgs. My current diesel may be my last .

Well I beg to differ with you on your assessment. First off, the "nearly as much HP and torque, is only half right. Yes they can match or exceed HP numbers, but when you consider the 2014 6.7 Cummins lineup you can go from 350-385HP (Hemi's 366-383 depending on engine) and 660-850TQ (Hemi's 400-429 depending on engine). The new 6.4 Hemi is impressive, but still only HALF the torque of 2 different offerings in the diesel lineup. Mileage, I'd be willing to bet, will still be better than the 6.4. I'd wager the new Cummins are getting 15-17 fairly regularly, and the difference when hooked to a decent load will be even greater.
As for fuel, I know that varies from day to day, and place to place, but we just drove by the station where I regularly fill up our car and truck. It was 87 octane 4.15 gal, and diesel 3.99.

Not getting into a one is better than the other, just correcting the "facts". All the numbers above are solid, with the exception of the fuel prices which could be way different next week, but that is how they stack up tonight, where I live.

That's just the Ram numbers. Fords 6.7 is something like 400 hp and 750tq. The GM 6.6 is 397hp and 750tq. Ford is letting out their next version numbers and they are like 440/840. Prob will still get better mpgs than the gas engines.

Or go the other route with the Dodge lineup and go the Eco diesel, with and estimated (tests are returning HIGHER numbers) 28 mpg highway, and in 2 tests I have read broke 30mpg. In addition, when towing a 7400lb load it still got 19 mpg. Most trucks are happy with 19 when empty.

Other costs such as maint, and longevity are not factored into the "better" issue.

 

[mowin]

Well I beg to differ with you on your assessment. First off, the "nearly as much HP and torque, is only half right. Yes they can match or exceed HP numbers, but when you consider the 2014 6.7 Cummins lineup you can go from 350-385HP (Hemi's 366-383 depending on engine) and 660-850TQ (Hemi's 400-429 depending on engine). The new 6.4 Hemi is impressive, but still only HALF the torque of 2 different offerings in the diesel lineup. Mileage, I'd be willing to bet, will still be better than the 6.4. I'd wager the new Cummins are getting 15-17 fairly regularly, and the difference when hooked to a decent load will be even greater.
As for fuel, I know that varies from day to day, and place to place, but we just drove by the station where I regularly fill up our car and truck. It was 87 octane 4.15 gal, and diesel 3.99.

Not getting into a one is better than the other, just correcting the "facts". All the numbers above are solid, with the exception of the fuel prices which could be way different next week, but that is how they stack up tonight, where I live.

That's just the Ram numbers. Fords 6.7 is something like 400 hp and 750tq. The GM 6.6 is 397hp and 750tq. Ford is letting out their next version numbers and they are like 440/840. Prob will still get better mpgs than the gas engines.

Or go the other route with the Dodge lineup and go the Eco diesel, with and estimated (tests are returning HIGHER numbers) 28 mpg highway, and in 2 tests I have read broke 30mpg. In addition, when towing a 7400lb load it still got 19 mpg. Most trucks are happy with 19 when empty.

Other costs such as maint, and longevity are not factored into the "better" issue.

. Diesel has been higher here in upstate NY for many yrs. Today, 87 octane is $3.65, while diesel is $4.45. I would imagine your area is the exception rather than the norm. I have travled from Maine to PA and as far west as MI and havnt seen diesel anywhere close to the price of 87, let alone cost less. If diesel was lower in my area I would be seriously looking into a diesel if they didnt have the emission crap on 'em.