Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: SRT6776]
#2671337
06/28/19 10:13 PM
06/28/19 10:13 PM
|
Joined: Nov 2003
Posts: 5,160 Texas
dannysbee
master
|
master
Joined: Nov 2003
Posts: 5,160
Texas
|
Pretty sure that post was by HotRodDave.
Getting old just means you were smarter than some and luckier than others.
|
|
|
Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: WO23Coronet]
#2671486
06/29/19 11:02 AM
06/29/19 11:02 AM
|
Joined: Jan 2003
Posts: 554 Mesa , Az
Jambbii
mopar
|
mopar
Joined: Jan 2003
Posts: 554
Mesa , Az
|
I have the Durango. HotRodDave gave me the advice. I did the valve springs as well and took .020 of the heads. Still running good! My only complaint is that now I need to do headers and a custom tune!
70 Challenger 1960 Town Wagon P Pump 24v cummins project 06 Mega 3500 Drw 2wd 12 Durango R/T 18 Power Wagon 67 A100
|
|
|
Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: Jambbii]
#2674763
07/06/19 10:53 AM
07/06/19 10:53 AM
|
Joined: Jul 2019
Posts: 194 Springtown Pa
Ray408G3Hemi
member
|
member
Joined: Jul 2019
Posts: 194
Springtown Pa
|
I have the Durango. HotRodDave gave me the advice. I did the valve springs as well and took .020 of the heads. Still running good! My only complaint is that now I need to do headers and a custom tune! That'll wake it up even more... I've seen ric do the swap about 6 different times a few trucks and Challengers and each time it amazes me why FCA doesn't do it with the 5.7 Challengers, I can understand the trucks not geting it,. but the 5.7 R/T Challenges form new would be F@#$ing monsters.
1963 Thunderbolt 496FE 10.80 (still a work in progress) 1968 Mustang slow a$$ 428 FE 1971 Boss 351 Mustang 11.20@115mph 1993 Lightning 10.61 @ 129mph 408Ci A3 headed NA 1996 Viper GTS 2001 Lightning 8.99 @ 155MPH 5.4 Mod Motor 2009 Ram 9.65@144MPH 463CI G3 NA 2010 Challenger 9.91 @ 139MPH 408CI G3ci NA 2019 F150 (local dealer's Lightning package) ..11.90s
|
|
|
Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: Ray408G3Hemi]
#2674961
07/06/19 07:28 PM
07/06/19 07:28 PM
|
Joined: Sep 2011
Posts: 146 Australia
L4staero
member
|
member
Joined: Sep 2011
Posts: 146
Australia
|
I have the Durango. HotRodDave gave me the advice. I did the valve springs as well and took .020 of the heads. Still running good! My only complaint is that now I need to do headers and a custom tune! That'll wake it up even more... I've seen ric do the swap about 6 different times a few trucks and Challengers and each time it amazes me why FCA doesn't do it with the 5.7 Challengers, I can understand the trucks not geting it,. but the 5.7 R/T Challenges form new would be F@#$ing monsters. Why would people buy a 485hp 6.4 when they can buy a 450hp 5.7? They detuned the 5.7 heavily for this reason
|
|
|
Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: L4staero]
#2674969
07/06/19 07:58 PM
07/06/19 07:58 PM
|
Joined: Jul 2019
Posts: 194 Springtown Pa
Ray408G3Hemi
member
|
member
Joined: Jul 2019
Posts: 194
Springtown Pa
|
I have the Durango. HotRodDave gave me the advice. I did the valve springs as well and took .020 of the heads. Still running good! My only complaint is that now I need to do headers and a custom tune! That'll wake it up even more... I've seen ric do the swap about 6 different times a few trucks and Challengers and each time it amazes me why FCA doesn't do it with the 5.7 Challengers, I can understand the trucks not geting it,. but the 5.7 R/T Challenges form new would be F@#$ing monsters. Why would people buy a 485hp 6.4 when they can buy a 450hp 5.7? They detuned the 5.7 heavily for this reason Max it would be 410/420.......Why did people buy a 390 HP 6 pak when they could buy a 425hp Hemi? ...besides if it was say 425 Hp vs 485Hp the TQ of the 6.4 would still lure enough Speed freaks to the 6.4 over the 5.7 to make it worth while.
1963 Thunderbolt 496FE 10.80 (still a work in progress) 1968 Mustang slow a$$ 428 FE 1971 Boss 351 Mustang 11.20@115mph 1993 Lightning 10.61 @ 129mph 408Ci A3 headed NA 1996 Viper GTS 2001 Lightning 8.99 @ 155MPH 5.4 Mod Motor 2009 Ram 9.65@144MPH 463CI G3 NA 2010 Challenger 9.91 @ 139MPH 408CI G3ci NA 2019 F150 (local dealer's Lightning package) ..11.90s
|
|
|
Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: Ray408G3Hemi]
#2675010
07/06/19 09:24 PM
07/06/19 09:24 PM
|
Joined: Sep 2011
Posts: 146 Australia
L4staero
member
|
member
Joined: Sep 2011
Posts: 146
Australia
|
I have the Durango. HotRodDave gave me the advice. I did the valve springs as well and took .020 of the heads. Still running good! My only complaint is that now I need to do headers and a custom tune! That'll wake it up even more... I've seen ric do the swap about 6 different times a few trucks and Challengers and each time it amazes me why FCA doesn't do it with the 5.7 Challengers, I can understand the trucks not geting it,. but the 5.7 R/T Challenges form new would be F@#$ing monsters. Why would people buy a 485hp 6.4 when they can buy a 450hp 5.7? They detuned the 5.7 heavily for this reason Max it would be 410/420.......Why did people buy a 390 HP 6 pak when they could buy a 425hp Hemi? ...besides if it was say 425 Hp vs 485Hp the TQ of the 6.4 would still lure enough Speed freaks to the 6.4 over the 5.7 to make it worth while. Remember some models they sold well below 100 426 hemis as the others were so close power wise and faster on the street. I think it you fit the 6.4 cam, intake manifold and exhaust manifolds to a 5.7 Eagle and tune it the power difference wouldnt be very different. The factory 5.7 tune runs AFR at 10 to kill power. Reality is its only some c.i difference, 0.4 comp and 20 cfm less
|
|
|
Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: L4staero]
#2675946
07/09/19 11:55 AM
07/09/19 11:55 AM
|
Joined: Jan 2003
Posts: 17,912 S.E. Michigan
ZIPPY
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 17,912
S.E. Michigan
|
Some folks with expensive college degrees, who are a whole lot smarter than me, in the past have explained: OEMs often calibrate WOT over rich to prolong the life of emissions equipment such as catalytic converters. It's not done for the sole purpose of killing power. It's done to save car companies money because in the United States there is a Government mandated 8 year/80,000 mile warranty on emissions equipment. I guess there is a chance I was being lied to, but it seems to make sense. https://www.epa.gov/transportation-...ent-questions-related-transportation-air
Rich H.
Esse Quam Videri
|
|
|
Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: ZIPPY]
#2676051
07/09/19 05:24 PM
07/09/19 05:24 PM
|
Joined: Sep 2011
Posts: 146 Australia
L4staero
member
|
member
Joined: Sep 2011
Posts: 146
Australia
|
Some folks with expensive college degrees, who are a whole lot smarter than me, in the past have explained: OEMs often calibrate WOT over rich to prolong the life of emissions equipment such as catalytic converters. It's not done for the sole purpose of killing power. It's done to save car companies money because in the United States there is a Government mandated 8 year/80,000 mile warranty on emissions equipment. I guess there is a chance I was being lied to, but it seems to make sense. https://www.epa.gov/transportation-...ent-questions-related-transportation-air Excellent point however the 6.4 runs like 2 points leaner than the 5.7 right up in its best power AFR range
|
|
|
Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: L4staero]
#2676160
07/10/19 07:11 AM
07/10/19 07:11 AM
|
Joined: Jan 2003
Posts: 8,035 Tulsa OK
Bad340fish
master
|
master
Joined: Jan 2003
Posts: 8,035
Tulsa OK
|
Some folks with expensive college degrees, who are a whole lot smarter than me, in the past have explained: OEMs often calibrate WOT over rich to prolong the life of emissions equipment such as catalytic converters. It's not done for the sole purpose of killing power. It's done to save car companies money because in the United States there is a Government mandated 8 year/80,000 mile warranty on emissions equipment. I guess there is a chance I was being lied to, but it seems to make sense. https://www.epa.gov/transportation-...ent-questions-related-transportation-air Excellent point however the 6.4 runs like 2 points leaner than the 5.7 right up in its best power AFR range They never worried about the 6.4 pulling a trailer up a mountain wide open for 5 minutes either, they have to consider that with the 5.7 truck engines. I would be curious to see the 6.4 BGE vs the 6.4 car motor.
68 Barracuda Formula S 340
|
|
|
Re: 6.4 SRT cam in a stock 5.7 Ram
[Re: L4staero]
#2676645
07/11/19 08:03 PM
07/11/19 08:03 PM
|
Joined: Jan 2005
Posts: 12,424 Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
|
the truck 5.7 also had active intake to switch between long and short runners as well as the front runners on the intake are not squashed down like the front runners of the car intake.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
|
|