|
Re: Design me a 3G Hemi bracket engine
[Re: WO23Coronet]
#1057110
09/24/11 10:14 AM
09/24/11 10:14 AM
|
Joined: Jun 2005
Posts: 2,776
Ontario Canada
MattW
master
|
master
Joined: Jun 2005
Posts: 2,776
Ontario Canada
|
Quote:
So on average what were the sonic check numbers#, how thick were the 2002 3/4 ton blocks as compared to the later ones?
Quote:
We have like 8 or 9, 5.7 blocks and 3, 6.1 blocks laying around. Started hoarding the 5.7's when the 5.7 Eagle engines came out and grab up the new 6.1's whenever I can.
I just picked up a couple fully machined, ready to assemble 5.7 blocks from a engine reman shop that was going out of business for $75 ea. One was bored .020" over and the other .040".
The stoutest block of all are the very few and rare 5.7's that were available in 2002 3/4 ton Hemi Ram trucks. Those blocks can safely take up to a 4" bore.
From all the later 5.7 blocks we have and I sonic checked, (what a long day lol) basically a 060" over 5.7 will have the same wall thickness of a .020" 6.1.
Could it be that the 5.7 and 6.1 have a higher nickel content and stronger design thats why they survive 700 hp? 
The factory LA block could hand up to 600 hp then the cylinder wall would split open. Not all of them but most IMO.
If most 5.7 can hand a .060 overbore I'm good with that.
|
|
|
Re: Design me a 3G Hemi bracket engine
[Re: 2734bbl]
#1057114
09/26/11 10:37 AM
09/26/11 10:37 AM
|
Joined: May 2004
Posts: 2,864
IN
Irun5snd8th
OP
master
|
OP
master
Joined: May 2004
Posts: 2,864
IN
|
So why is the first thing that everyone wants to do is bore the block??? Does having a couple extra cubes mean that much? Obviously if I am running a heads up, must meet these rules, class that is one thing; but, why on a bracket or street car??? I would think you would want your cylinder walls as thick as possible. You hear engine builders all the time worried about distortion and deflection. If the 5.7 is that much thicker then my mind is made up cause I only want to make 650 horse anyway. Stroker 5.7 = 392 and good heads sounds like its no issue to get there from all that I have seen on here and talking to several people.
AFCO, Rons Fuel Injection sponsored Dodge Challenger
Mention Street Lethal Motorsports
|
|
|
Re: Design me a 3G Hemi bracket engine
[Re: CHAPPER]
#1057117
09/28/11 12:42 PM
09/28/11 12:42 PM
|
Joined: May 2004
Posts: 2,864
IN
Irun5snd8th
OP
master
|
OP
master
Joined: May 2004
Posts: 2,864
IN
|
Anyone got a price on that fancy aluminum block?
AFCO, Rons Fuel Injection sponsored Dodge Challenger
Mention Street Lethal Motorsports
|
|
|
Re: Design me a 3G Hemi bracket engine
[Re: Irun5snd8th]
#1057118
09/28/11 01:50 PM
09/28/11 01:50 PM
|
Joined: Jun 2005
Posts: 2,776
Ontario Canada
MattW
master
|
master
Joined: Jun 2005
Posts: 2,776
Ontario Canada
|
Quote:
Anyone got a price on that fancy aluminum block?
IIRC 3500. to 4000.00
|
|
|
Re: Design me a 3G Hemi bracket engine
[Re: MattW]
#1057119
09/28/11 09:22 PM
09/28/11 09:22 PM
|
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
CHAPPER
master
|
master
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
|
FYI...I just got an intake (carbed)from Stanton Racing..$750.00 +$10.00 shipping,,,
If you like drag racing, support your local track.
|
|
|
Re: Design me a 3G Hemi bracket engine
[Re: jg309]
#1057121
09/29/11 05:26 PM
09/29/11 05:26 PM
|
Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
Drag Week Mod Champion
|
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
|
 spring on the left is the stock valve spring in eagle head. at 1.90 IH it has 125lb. open @1.40-310 spring in the middle i bought just to check them out.thy are new replacement spring for eagle head. paid $30 for 16 thru mopar-wholesale. they came with a .040 spring seat. 2.0IH -105lbs, 1.90IH-145lb, open at 1.40-330lb. coil bind at 1.30 on the right is a PAC1219 spring. cost about $200. 1.90IH-100lb, 1.80IH-130lb, open 1.20-330lb. coil bind 1.10
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
|
|
|
Re: Design me a 3G Hemi bracket engine
[Re: sixpackgut]
#1057122
09/29/11 05:37 PM
09/29/11 05:37 PM
|
Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
Drag Week Mod Champion
|
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
|
 eagle heads will take a longer pushrod because the valve length is longer. i was told you gain PtoV clearance with eagle head swap, this does not appear to be true as i measured valve to deck on 6.1 head and eagle head. you can get a 2"installed height with the eagle heads or better yet, change valves and drop retainer away from rocker to run a dual spring and your rocker geometry should stay pretty close 5.7 and 6.1 pushrods are 6.625 and 7.875 if using eagle heads, the pushrods are longer 6.81 and 8.09
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
|
|
|
Re: Design me a 3G Hemi bracket engine
[Re: Irun5snd8th]
#1057125
09/29/11 08:20 PM
09/29/11 08:20 PM
|
Joined: Jun 2005
Posts: 2,776
Ontario Canada
MattW
master
|
master
Joined: Jun 2005
Posts: 2,776
Ontario Canada
|
Quote:
I would assome just because they have equal lb specs that they are not equal springs. Surely they are made with different materials based upon what I see in the picture.
Yeah I should of clarified my question. I know the pac spring is a better spring BUT when do you need them other than having a camshaft that requires the psi. Production G3 hemi in the past have had issues with their valve springs and address them but using a bigger spring.
In a low budget build I try to save as much money as I can.
Like the Jesel rocker system that is 3000.00. I would like to know how much hp there is to gain for the price especially when you are not going past 6500 rpm with a hydraulic lifter? 
|
|
|
Re: Design me a 3G Hemi bracket engine
[Re: MattW]
#1057126
09/29/11 09:31 PM
09/29/11 09:31 PM
|
Joined: Feb 2006
Posts: 1,051
The Great White North
RAMM
super stock
|
super stock
Joined: Feb 2006
Posts: 1,051
The Great White North
|
I have a warm and fuzzy spot for PAC springs- you cannot beat them. As for the Jesel rocker system I don't think you would absolutely need them for a hydro-roller 7000 rpm and under app. Atlantic engines entered a 3G Hemi in the 2010 EMC with stock rockers and though it had electrical issues, it was supposed to make somewhere in the 640-650 hp range!!! I think if the v-train is light and durable enough then you can make power elsewhere. J.Rob
2009 PHR\EMC Competitor
2010 PHR\EMC Competitor
2011 PHR\EMC Competitor
2012 PHR\EMC Competitor
2013 PHR\EMC Competitor
2014 HotRod/EMC Competitor
2015 HotRod/EMC NoShow
2016 HotRod/EMC 3rd place SPEC Bigblock
2018 HotRod/EMC 7th place G3
|
|
|
Re: Design me a 3G Hemi bracket engine
[Re: Irun5snd8th]
#1057127
09/29/11 09:41 PM
09/29/11 09:41 PM
|
Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
Drag Week Mod Champion
|
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
|
Quote:
I would assome just because they have equal lb specs that they are not equal springs. Surely they are made with different materials based upon what I see in the picture.
if you read closely, you will notice although the replacement springs do reach the same LB, it is a different at a much different height spec.
with that being said and after checking the size of the cam in my engine right now i decided to use the replacement springs insted of the PAC. the PAC's would have been so far away from coil bind that i just thought the replacement spring was a better fit
my new plan is to run what i got and see how it does. then when i can afford to dump some coin, i plan to step up the whole valvetrain to a dual spring setup and a real cam.
so i will sell my new PAC's for a good price if anyone is interested
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
|
|
|
|
|
