Re: Anyone done a 4.25 crank in a 5.7 stroker?
[Re: cudadoug]
#2631701
03/12/19 08:09 AM
03/12/19 08:09 AM
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Joined: Jan 2006
Posts: 1,400 Trumbauersville PA
ric3xrt
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Trumbauersville PA
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I'll get back to this later , you can use 1.09 ph pistons with 6 in rods, but the throws have to be trimmed. but for the most part pistons are custom ordered, CP and , Dimond both have "programs" for 1.02/1.03 PH pistons. 6.1 C to C rod works best., next option is Nissan's 6.077 .
Last edited by ric3xrt; 03/12/19 08:10 AM.
Truth has no agenda, but those with an agenda make their own truth. Some of us are so open minded they only see their View
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Re: Anyone done a 4.25 crank in a 5.7 stroker?
[Re: cudadoug]
#2631925
03/12/19 02:56 PM
03/12/19 02:56 PM
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Joined: Jan 2006
Posts: 1,400 Trumbauersville PA
ric3xrt
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?
Think it will clear or will the block need a notching? If the block does need clearanced, is that safe with a 5.7 block?
Discuss... 4.05+ stroke have clearance issues , mostly the last oil drain back on the passenger side of the block, the passage that connects the last 2 drain backs together there is just enough thickness for the notch that is needed for the 4.05 crank the 4.08 gets hairy and 4.20-4.30 there is not enough casting to notch it and not break thru to the passage , 3, options here, 1st is to block the last drain back at the head, 2nd is to tap off the last one on the outside of the block and route to the oil pan and plug the drain back internally , 3rd is the best solution(in my opinion) is to clearance the passage then tube the passage and dimple it......not to forget the windage tray it also needs some attention for the 4.05+ cranks. CP has a 4.20 inch crank, less issues......Now if your real adventurous, offset the 4.25 to 4.3 with 1.88 Journal ......... it's like trying to fit 64 Imperial into a 1 car garage. The 9.25 deck height of the 5.7/6.1s make the 4.20+ cranks a challenge the 9.28 Deck height of the BGE(SRT392) gives you better option.
Truth has no agenda, but those with an agenda make their own truth. Some of us are so open minded they only see their View
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Re: Anyone done a 4.25 crank in a 5.7 stroker?
[Re: ric3xrt]
#2632156
03/13/19 07:32 AM
03/13/19 07:32 AM
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Joined: Jan 2006
Posts: 1,400 Trumbauersville PA
ric3xrt
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Trumbauersville PA
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also keep in mind you can use cometic MLS Head gasket C5876-120 , it's a 4.1 bore .120 thick gasket...yes .120 thick gasket, again this type build is those who think outside of the box and are not looking for 100 runs+ type build. . look at it this way. Deck Height typical 5.7 is 9.25, add the .120 gasket you have 9.37 "useable DH" . pull off .003 for decking and then .048 for Piston to Head clearance another .006 for rotating assembly oil clearance leaves you 9.313 , 2.125 crank throw +6.125 C to C rod and you have a 1.06 pin height piston.....it's been done both Arrington(before being sold), and Muscle Motors extreme have done it also...not for the faint of heart.
A BGE/SRT392 block with .120 gasket is 9.4 , 4.09 bore with a offset grind 4.3 crank yields 451 CI...keep compression in the mid 10's and the gasket won't blow.....needs to be well tuned also Custom order Cometic Gasket with a 4.155 bore and .110 thickness you can go 4.125 bore on the BGE block and the 4.3 crank....459(460) ci inches of.. iron block fun.
Truth has no agenda, but those with an agenda make their own truth. Some of us are so open minded they only see their View
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Re: Anyone done a 4.25 crank in a 5.7 stroker?
[Re: cudadoug]
#2632610
03/14/19 12:02 PM
03/14/19 12:02 PM
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Joined: Jan 2006
Posts: 1,400 Trumbauersville PA
ric3xrt
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I'm gearing up to do some Videos on these G3's Going over the oiling system, some of the different heads I have dissected and few builds one of the builds in the works this year is a 444 CI 6.bassed 4.08X4.25.
Truth has no agenda, but those with an agenda make their own truth. Some of us are so open minded they only see their View
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Re: Anyone done a 4.25 crank in a 5.7 stroker?
[Re: ric3xrt]
#2947459
07/26/21 05:48 PM
07/26/21 05:48 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
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I'm gearing up to do some Videos on these G3's Going over the oiling system, some of the different heads I have dissected and few builds one of the builds in the works this year is a 444 CI 6.bassed 4.08X4.25. Did you ever make these oiling vids?
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Re: Anyone done a 4.25 crank in a 5.7 stroker?
[Re: ric3xrt]
#2948271
07/28/21 07:14 PM
07/28/21 07:14 PM
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Joined: Sep 2014
Posts: 1,408 Central Pa
moparjim79
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I'm gearing up to do some Videos on these G3's Going over the oiling system, some of the different heads I have dissected and few builds one of the builds in the works this year is a 444 CI 6.bassed 4.08X4.25. I just came across this- I would also love to see these videos. Good info posted though!
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Re: Anyone done a 4.25 crank in a 5.7 stroker?
[Re: HotRodDave]
#2996328
12/18/21 07:15 AM
12/18/21 07:15 AM
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Joined: Jul 2019
Posts: 194 Springtown Pa
Ray408G3Hemi
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Springtown Pa
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Videos stopped when his health issue started, I was over there the other day picking up my 488ciG3, he's been real low key , has a pair of AFR heads and a new Dart block........cut in to pieces , guy can't leave anything in one piece . https://www.youtube.com/watch?v=Gl5a5kY1D0c
Last edited by Ray408G3Hemi; 12/18/21 07:18 AM.
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
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Re: Anyone done a 4.25 crank in a 5.7 stroker?
[Re: Ray408G3Hemi]
#2996981
12/20/21 10:27 AM
12/20/21 10:27 AM
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Joined: Aug 2008
Posts: 941 Texas, USA
ChrgrCuda
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Videos stopped when his health issue started, I was over there the other day picking up my 488ciG3, he's been real low key , has a pair of AFR heads and a new Dart block........cut in to pieces , guy can't leave anything in one piece . https://www.youtube.com/watch?v=Gl5a5kY1D0c Just learned a lot from this guys video. Thanks!
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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