4.7L Semi-Hemi, 5.7L Hemi, 6.1L Hemi, 8.1L V10 Wedge

[SUN RA KAT]

The bigger Ram engines for 2003 seem to have a big mystery. There is very little difference between 5.7L and 6.1L, but there is a huge difference between 6.1L and 8.1L. Why would Chrysler build 2 engines so close together in size? It seems the next size engine after the 5.7L should be 7.0L, not 6.1L. (7.0L = 426 ci, BTW)

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Kenny

The Mighy Dodge:

2000 Intense Blue Ram 1500 Quad Cab Sport SLT+, 5.9 L, Auto, 3.55 Sure Grip, Heavy Duty Service Group (big battery, transmission oil cooler, & heavy-duty engine cooling), MOPAR tonneau, MOPAR bedliner, MOPAR Ram mudflaps, MOPAR side moldings, Flowmaster 50-series SUV muffler with heat shield, Belltech rear sway bar, JBA silver ceramic coated headers, Quick D throttle body, K&N Gen II FIPK, MOPAR PCM, 180 degree thermostat, R/T Cam Package (cam & lifters), new valve springs & retainers, and new timing chain, and sometimes a full tank of premium gas.

Did I mention it was INTENSE BLUE?

[1500REDRAM]

I'M NOT SURE WHY.6.1=WHAT,I WAS THINKING 365ci OF 370ci.WASN'T THAT V10 A 8.3.THAT WOULD BE LIKE 500ci.ARE WE GOING TO BE ABLE TO GET THE 6.1 IN THE 1/2 TONS?
SO WHAT ARE THE CI'S FOR THE NEW MOTORS.

4.7L=?-SEMI-HEMI
5.7L=353ci-HEMI
6.1L=?-HEMI
8.1L=?-WEDGE OR HEMI?

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1997 RED REG.CAB SHORTBED,4X4,BIG BAD 318,MSD 6A BOX,8.5 MSD WIRES,SHIFT LIGHT,BFG ATKO'S,DUAL 2.5" BEHIND THE REAR WHEELS,NO MUFFLER.VERY,VERY LOUD.

[98ram1500]

I heard (may not be fact) the 5.7L was built to meet the guidlelines of Nascar so that it could be raced. But like you say, why build one so close like the 6.1L?

[SUN RA KAT]

98ram1500 said, "I heard (may not be fact) the 5.7L was built to meet the guidlelines of Nascar so that it could be raced."

NASCAR would not let Chrysler use the Hemi citing "Unfair Advantage". NASCAR even gave hassles to Chrysler over the new Wedge racing engine stating something again about unfair advantage - cylinder bores spaced far enough apart so bigger valves than Ford and Chevy uses could be put in.

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Kenny

The Mighy Dodge:

2000 Intense Blue Ram 1500 Quad Cab Sport SLT+, 5.9 L, Auto, 3.55 Sure Grip, Heavy Duty Service Group (big battery, transmission oil cooler, & heavy-duty engine cooling), MOPAR tonneau, MOPAR bedliner, MOPAR Ram mudflaps, MOPAR side moldings, Flowmaster 50-series SUV muffler with heat shield, Belltech rear sway bar, JBA silver ceramic coated headers, Quick D throttle body, K&N Gen II FIPK, MOPAR PCM, 180 degree thermostat, R/T Cam Package (cam & lifters), new valve springs & retainers, and new timing chain, and sometimes a full tank of premium gas.

Did I mention it was INTENSE BLUE?

[kirkyg]

No sunra...i read the exact same thing...the hemi is planned to be a nascar engine.

kirkyg

[hill360]

About the engine sizes being so close, I have no clue. Maybe they are planning on putting 3 different V8's in the 1500?!?

My thoughts are they may use the 4.7 to replace the old 3.9 (as the base engine), the 5.7 to replace the 318, and the 6.1 to replace the 360.

Or maybe they plan on just the 4.7 & 5.7 in 1500's and the 6.1 as a performance engine (with more power) for the next ss/t or full size r/t .

Or the most logical guess would probibly be 4.7 & 5.7 in the 1500's, and the 6.1 and 8.1 in the 2500, 3500. And I'm guessing that if they did that, the 6.1 would be a "workhorse" that is alot slower reving, more geared for work (like our 360's now) than the 353.

But it DOES seem like there would be a bigger difference in the two engine's sizes! .4 Liters has got to be the closest between two production engines of the same company.

And about Nascar...I hope that we don't get banned for another 30 years for stomping everyone again! (wishfull thinking)

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1999 Dodge Ram Sport, Solar Yellow, 4x4, 360, Reg. cab/swb, 3.92's w/limited slip, Keystone hood scoop, Sir Michaels roll pan, Downey SST Soft Tonneo Cover, Mopar Super Computer, Generation II K&N, Gibson 2 1/2" split dual exhust, Gibson 409 Stainless Steel Headers, ASP 2 piece pullies, DynoMAX 3" high-flow Cat., Custom made 2 1/4" Y pipe, 180 degree thermostat.

Visit my site for a complete look at my truck (and the rest of my mods).
http://360power.homestead.com/ram.html

[This message has been edited by hill360 (edited February 09, 2001).]

[This message has been edited by hill360 (edited February 09, 2001).]

[kirkyg]

Also, keep in mind the new Hemi's are hybrids...they only have a few characteristics of the old hemis...infact the OHC motors ford and chevy have now that put out the extra hp are using a modified (stolen) hemi like shape cylinders. This is atleast what Jon Smith told me and he knows his stuff. Only dodge knows how to do a hemi design right tho .

kirkyg

[2mopars]

1500REDRAM...There is 61.03 cubic inches
in 1 liter. You can do the math.