Yeah but whats the gas mileage on that 6.1? Wouldn't it be better to buy a couple of bolt ons, save some gas, and get to 13s using the 350?

 

Its rated at 19 hwy. I doubt there is very many high 12 second 350's in a 4100lb 4 door sedan pushing 420 hp that will get high teens in mpg. These engines are pushing over 500hp to the wheels super charged running 6 psi and little or no tuning due to computer code not being decoded. 350's have seen their better days.

Rumours are, the 6.1L will be soon available in the 2500 and 3500 Rams as a 06.5 model pushing over 450lb of torque.

 

Bla, Bla, Bla. 500 hp to the rear wheels? Show me the numbers online somewhere. My Lightning isn't stock, and I'm pushing 425 rwhp. Hard to believe an unproven wanna-be Hemi can beat that.

 

I get 22-24mpg highway on my 300C SRT-8 (mostly 70-75mph).

There are some 8psi blown 5.7 HEMIs running around 500hp (at the motor) - not rear wheels. There are dyno sheets. And yes, there is much tuning required (these are MAP ECMs, not MAF). Any MAP-based system needs some decent tuining when you start forcing induction.

You'll start seeing some 500hp (crank) numbers naturally aspirated on the 6.1's in the spring. The motor is very new - it takes a bit of time (just like any other motor). I haven't heard any R&D results from any 6.1 blower experiments yet.

stevef100s,
At 425rwhp, that's one strong Lightning you have there. Two thumbs up. Did you get most of it with boost, or did you go further on the mechanical side (exhaust, tuning, etc). I'm interested to find out.

Cheers,
Norm

 

The 3v V-10 IS the best gas towing engine out currently. Not only does it make more power than the Chevy 8.1 and Dodge 5.7, it also get better mpg's than both--empty and under load.

I have driven one myself and I have to say that it is a very formidable truck--it may weigh more than a 1/2 ton Semi-Hemi but it will hold its own on the road--not talking winning, but at least keeping up with it.

With all that being said, I loved the 3v V-10 for everything but its 12-14mpg, so I opted to get a 6-Liter PSD--which again, is quick, relative to its size, but in turn gets 20mpg.

 

Here you go Steve.

http://www.gsmotorsports.com/dynolab.html

Some numbers for you;

6.1L
500 rwhp
507 ftlbs torque

5.7
414 rwhp
437 ftlbs torque

 

I stand corrected. We'll see if they hold up at that output level.

 

Thanks for posting that link.
What I think it would be interesting is the driveability, its peak torque being at around 4850rpms.
I will acknowledge I haven't driven an SRT-8, but it the power delivery is anything like the standard HEMI, I personally won't like it a whole lot.
They are capable of great numbers (both power and times), for which I respect it for, but I find them lacking in the low rpm torque delivery department.
However this is just a personal preference.

Would have liked to have run against a boosted SRT-8 in my old 5.4 for interests sake, pity they have only just made it to Australian shores.

 

I have seen some time slips for the SRT8 and the 60' is down in the 1.9's which is not bad. I have seen a lot of fast cars not break into the flat 2.0 range.

I believe the misconception of the 5.7 Hemi not having low end torque is three fold;

1. Computer's ability to adapt. There are many reports that driving style has a great influence on this engine, but after a few hard runs it will respond.

2. The Hemi pulls very good in the higher RPM ranges giving it the impression it is not pulling down low. If we are talking about what is relative here, I believe we have all seen the Independent Dodge commercial that was a rebuttle against Fords drag off with a load commercial. The Hemi pulls just as well as any other small block in the lower RPM range.

3. Optional 20" wheels even with a 3.92 gear. They are heavy, and tall reducing the affect of the 3.92 rear gear ratio.

 

Steve, do some research on the 6.1L and you will see this is a very well engineered engine. Forged crank, piston squirters etc... I don't believe it will have any issues for the life expectancy if using the 5.7 as an example.

I have seen a 5.7 with over a hunderd 1/4 miles runs on it that runs down in the 12.49's (best I know of) with only NOS and few mods. I can only estimate it takes about 550 hp to push a 4800 lb truck that fast in the 1/4. This same truck ran 13.8's with no NOS. Just do a search for Hemi777 for proof.

There is a growing aftermarket for the Hemi engine. Many are jumping on the bandwagon and it will only continue to move forward. Most that are buying, are buying the Hemi and getting the cars for free.

Ford should take note because Chrysler is doing what they did in the 60's and 70's. Performance sales, no doubt about it. Chrysler sales numbers may not be on the sale level as GM and Ford, but they are giving a lot to their customers in performance + price. Also their sales are continuing to move up, not down.

I personally believe Chrysler is poised to continue this trend with the new lineup they are coming out with. A new small SUV, the diesel Liberty, Charger, and eventually the Challenger (direct competor with the Mustang). The SRT8 line up is also expected to expand into the trucks soon.

 

Heres some numbers.... in one of my magazines, they tested many different trucks including a Ford V10 F-250 and a Dodge Power Wagon wth the HEMI. The Fords GVWR was 9400 lbs. and the Dodge weighed 8510 lbs. The Ford had a quarter mile time of 17.37 @ about 79 mph. The Dodge had a time of about 18 @ 75 mph. Now those numbers show that the V10 is faster than a Hemi....even 1000 lbs more! Bottom line is....the V10 will kick dust at a HEMI.

 

GVWR and curb weight are not the same thing. GVWR is the most the vehicle can weigh when loaded down (ie the weight of the truck AND a load of bricks). curb weight is the stock vehicle weight with a full tank of fuel (no passengers, payload and the like). Subtract curb weight from GVWR to get payload.

6-7K is closer on the curb weights.

 

Sorry about that....thanks

 

What happened to your 5.4?

 

Did you guys realize this thread is 2 years old as off November. I didnt realize it either. Might be the longest running on here. Mention hemi or Dodge an people get to talking good or bad.