|
5.7 vs 6.1 new hemi
#494169
10/11/09 04:20 PM
10/11/09 04:20 PM
|
Joined: May 2003
Posts: 148
Indian Hills, CO
mdurbahn
OP
super street
|
OP
super street
Joined: May 2003
Posts: 148
Indian Hills, CO
|
I will be doing a new hemi swap into a b-body, I am trying to compare the 5.7 to 6.1 to see what would be best for me. I like the 6.1 because it has more hp, but it is quite a bit more expensive for not much more hp, would it be better to build the 5.7 up a little or go for the 6.1
67 Coronet R/T
911 Turbo
|
|
|
Re: 5.7 vs 6.1 new hemi
[Re: mdurbahn]
#494170
10/11/09 04:46 PM
10/11/09 04:46 PM
|
Joined: Nov 2003
Posts: 3,106
Ridgeland Wi
mopars_1
master
|
master
Joined: Nov 2003
Posts: 3,106
Ridgeland Wi
|
I read in an article where simple mods can bring you up to the 400 hp mark fairly easily in the 5.7 (headers, cam, different chip) personally, I think anyone can be relativly happy with the 5.7 as they are pretty quick and way cheaper than the 6.1 not to mention easier to find. it just my  though.
1971 Plymouth Duster 340 auto
1937 Plymouth PT50
1969 Dodge Dart Swinger 340 4 speed
2013 Ram laramie 2500 hemi
2008 Harley FLSTSB springer
|
|
|
Re: 5.7 vs 6.1 new hemi
[Re: MoparJoe]
#494173
10/11/09 09:12 PM
10/11/09 09:12 PM
|
Joined: Nov 2008
Posts: 301
wisconsin
swifter
enthusiast
|
enthusiast
Joined: Nov 2008
Posts: 301
wisconsin
|
Go with the 5.7-Easier to find--Take care of the heads--Problems with higher lift (aftermarket cams)
lift,,Put the 6.1 valves in and will flow as much as the 6.1!!!!I used xv's kit putting out 428hp now,I also went the uncommon route and used the car timing cover set-up to hide the alternator--Steve
2007 Ram 2500 Cummins
2008 Dodge Nitro
1970 340 Valiant Duster
|
|
|
Re: 5.7 vs 6.1 new hemi
[Re: ahy]
#494177
10/11/09 11:23 PM
10/11/09 11:23 PM
|
Joined: Jan 2003
Posts: 310
Castle Rock, CO
wegner426
enthusiast
|
enthusiast
Joined: Jan 2003
Posts: 310
Castle Rock, CO
|
Quote:
The 6.1 has forged pistons and rods. To handle the higher power of a high boost supercharger or a max effort NA build, they would need to be added to the 5.7 to keep it alive. As posted, it depends on what your goals are.
Wrong Wrong Wrong....The only forged piece in the 6.1 is the crank. Rods are powdered metal, pistons are cast.
|
|
|
Re: 5.7 vs 6.1 new hemi
[Re: wegner426]
#494178
10/12/09 12:11 AM
10/12/09 12:11 AM
|
Joined: May 2003
Posts: 148
Indian Hills, CO
mdurbahn
OP
super street
|
OP
super street
Joined: May 2003
Posts: 148
Indian Hills, CO
|
wegner- did you do a 3rd gen swap into that cuda? i see you are in castle rock, i work in tech center and would like to check it out if you did. Quote:
Quote:
The 6.1 has forged pistons and rods. To handle the higher power of a high boost supercharger or a max effort NA build, they would need to be added to the 5.7 to keep it alive. As posted, it depends on what your goals are.
Wrong Wrong Wrong....The only forged piece in the 6.1 is the crank. Rods are powdered metal, pistons are cast.
67 Coronet R/T
911 Turbo
|
|
|
Re: 5.7 vs 6.1 new hemi
[Re: mdurbahn]
#494179
10/12/09 12:22 AM
10/12/09 12:22 AM
|
Joined: Jan 2007
Posts: 1,668
Mi,U.S.A.
mike s
top fuel
|
top fuel
Joined: Jan 2007
Posts: 1,668
Mi,U.S.A.
|
Either way they make a ton of power. Added plus for the 6.1L is the forged crank and the piston oil sprayer system which really helps the durability.
Leave the gun.......take the Cannoli's....Mike
|
|
|
Re: 5.7 vs 6.1 new hemi
[Re: hemibeep]
#494183
10/12/09 07:32 PM
10/12/09 07:32 PM
|
Joined: Mar 2004
Posts: 375
Canada
DmanSRT71
enthusiast
|
enthusiast
Joined: Mar 2004
Posts: 375
Canada
|
What engine management are you using? I'm torn between making the stock computer work, or buying the stand alone. Quote:
working on 6.1 in 71 runner, having a few idle issues, but seems good so far! A little exhaust port work, good 5 angle valve job, and mid size comp cam.
69 Road Runner 383/auto/N96
71 Demon 340/4 spd
Would like to find a rust free Cuda body.
|
|
|
Re: 5.7 vs 6.1 new hemi
[Re: CrAzYMoPaRGuY]
#494185
10/13/09 09:09 AM
10/13/09 09:09 AM
|
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
|
Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
|
Quote:
Quote:
Just took my 06 5.7 Magnum R/T AWD car to the track. Ran 14.56. I think with a good program it will run high 13's. Not bad for a 4200lb car. I'd think either would work for you depneding. I'd guess the 5.7 would be cheaper???
Want an EASY "mod"?
Toss a jump over the fan relay and get the fans on all the time. Hard to believe, but it works better than I thought, that's for sure...
really? why because it keeps the block nice and cool? I also notice that it seems the air doesn't get to the box so nice. Wonder how much some fresh air would help??
|
|
|
Re: 5.7 vs 6.1 new hemi
[Re: DmanSRT71]
#494186
10/13/09 09:15 AM
10/13/09 09:15 AM
|
Joined: Oct 2003
Posts: 387
Almont, MI.
gdemon
enthusiast
|
enthusiast
Joined: Oct 2003
Posts: 387
Almont, MI.
|
Im using a 2004 ram computer with a custom flash and a harness form HOTWIRE.com
Jerry
69 Barracuda
70 Cuda
70 Cuda
70 Cuda Conv.
70 T/A Challenger
70 Sport Fury GT
71 Demon 5.7 Hemi
72 Demon
|
|
|
Re: 5.7 vs 6.1 new hemi
[Re: gdemon]
#494188
10/13/09 09:20 PM
10/13/09 09:20 PM
|
Joined: Mar 2004
Posts: 375
Canada
DmanSRT71
enthusiast
|
enthusiast
Joined: Mar 2004
Posts: 375
Canada
|
Thanks Jerry.
So you needed the custom flash because the 04 Ram was running a 5.7, and the 6.1 obviously needed a different program......but it WASN'T a flash to disable any of the unnecessary items that your car wouldn't use vs. the truck? (ie like air bags, auto trans inputs/outputs, ABS....etc) Is that an appropriate comment?
And how did you (or the hotwire auto harness) get around the built in security in that engine controller?
Edit (addition): Where does one purchase an 04 ram manual trans engine controller?
Thanks
Darren
Last edited by DarrenM; 10/13/09 09:24 PM.
69 Road Runner 383/auto/N96
71 Demon 340/4 spd
Would like to find a rust free Cuda body.
|
|
|
|
|
