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Design me a late model Hemi bracket engine
#1056909
08/19/11 05:08 PM
08/19/11 05:08 PM
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Irun5snd8th
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So we seem to have some 3rd Gen Hemi guys on here. These engines seem to have a lot of potential. I would like to see what those with the knowledge would recommend for a bracket engine with a carb on it. I would like to see one around 620-650 HP or more that I could just pound on round after round. Correct me if I am wrong but a few advantages I see are valvetrain longevity versus my current Eddy roller rocker setup and looks like there is a big weight advantage over my current R block setup. 
Last edited by Irun6snd8th; 08/21/11 07:55 PM.
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Re: Design me a 3G Hemi bracket engine
[Re: Irun5snd8th]
#1056910
08/19/11 06:00 PM
08/19/11 06:00 PM
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Joined: May 2005
Posts: 1,130
Dayton, Ohio
wldtm
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First off I am not a Gen 3 hemi expert, but I do closely monitor their development.
I personally would find a 6.1 hemi heads or a set of Eagle heads. The eagle heads are cheap to buy, and flow very well.
I would run a 5.7 based stroker, with new eagle heads or 6.1 heads. I would use an 04-08 short block to get rid of variable cam timing etc.
The drag pack intake is about 750$ cost to about $1000 retail I believe.
DO NOT upgrade the valve train. My opinion from watching the NHRA stockers, they will live to 8000 RPM. I hear the tie bars for the stands are worth the investment.
The stroker kit is about $2200-$3300.
Dont forget the MSD box to run the coils.
I am watching this as you go. Good luck.
Interested in having you car wired? Drag car, street car, EFI swap?
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Re: Design me a 3G Hemi bracket engine
[Re: wldtm]
#1056911
08/20/11 09:31 AM
08/20/11 09:31 AM
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Joined: Feb 2003
Posts: 3,998
GO BUCKS !!!!!!!
340RICK
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I agree  I would do a 5.7 stroker which would work out to a392" motor I would go with the eagle head for $ The 6.1 stuff is more expensive. the 5.7's can be found comeplete motors for a few hundred bucks. With bobs K frame you could even keep the truck oil pan. A 392" eagle headed motor could make 600hp easy with all stock stuff except for the stroker kit and lil head porting.
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Re: Design me a 3G Hemi bracket engine
[Re: 340RICK]
#1056912
08/20/11 10:11 AM
08/20/11 10:11 AM
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Joined: Jun 2005
Posts: 2,776
Ontario Canada
MattW
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Quote:
I agree
I would do a 5.7 stroker which would work out to a392" motor
I would go with the eagle head for $
The 6.1 stuff is more expensive. the 5.7's can be found comeplete motors for a few hundred bucks.
With bobs K frame you could even keep the truck oil pan.
A 392" eagle headed motor could make 600hp easy with all stock stuff except for the stroker kit and lil head porting.
Rick the Apache is going for 408.45 assemble and flows APPARENTLY 358 cfm OOTB.if the # are correct you will save on porting cost.
Man I would like to know your finding this motors. Up here in toque land the are going for 1500 to 2000.
How's your G3 biuld going? Matt
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Re: Design me a 3G Hemi bracket engine
[Re: MattW]
#1056913
08/20/11 10:18 AM
08/20/11 10:18 AM
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Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
CHAPPER
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I will  this thread also. I have a 5.7 '06 truck engine on the stand now that is a guinea pig for some dirt track experiments. Hope to find some info on the "do's/don'ts" of these engines. Thanks.
If you like drag racing, support your local track.
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Re: Design me a 3G Hemi bracket engine
[Re: 340RICK]
#1056914
08/20/11 10:37 AM
08/20/11 10:37 AM
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hemidup
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I'd opt for a partial filled 6.1 392 (aluminum block prefered) Scat 392 stroker crankshaft, Manley rod's, Ross flat top pistons, Knowlton Thunderheads cnc ported 5.7 heads (not Eagles) with 2.08" int/1.62" exh and D shaped exhaust port if using round tube primaries. Push the pistons .034" above deck with a .040" head gasket which will give you .042" quench, port matched 5.7 DP intake manifold with E85 carb and MSD6, Sharadon Performance rockershaft ties, camshaft starting with about a 252/260 @ .050 with a 110 lsa with an automatic (peak tq will be around 5000 rpm) and 112 lsa with a stick. Done with bench building for now, time to get back to work.
Jerry Williams.
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Re: Design me a 3G Hemi bracket engine
[Re: hemidup]
#1056915
08/20/11 02:51 PM
08/20/11 02:51 PM
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Irun5snd8th
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Block fill could definitely be a good idea. Looks like there is not alot of meat behind the cylinders and that could affect consistency.
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Re: Design me a 3G Hemi bracket engine
[Re: 68roadrunner]
#1056917
08/20/11 03:57 PM
08/20/11 03:57 PM
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Irun5snd8th
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To stop the constant valvetrain madness
And because I am looking for something to put some excitement back into my racing
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Re: Design me a 3G Hemi bracket engine
[Re: Irun5snd8th]
#1056918
08/20/11 08:59 PM
08/20/11 08:59 PM
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Irun5snd8th
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So where does a guy find out more about these engines and who is building them?
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Re: Design me a 3G Hemi bracket engine
[Re: Irun5snd8th]
#1056919
08/20/11 09:02 PM
08/20/11 09:02 PM
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Joined: May 2005
Posts: 1,130
Dayton, Ohio
wldtm
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super stock
Joined: May 2005
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Dayton, Ohio
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sharadon performance
modern muscle
Gremlin steve
arrington engines
Parson and Myers have built a drag pack engine
Jeff Teuton
try the lxforums.com some decent info, but alot of vendors on there
Interested in having you car wired? Drag car, street car, EFI swap?
PM for details
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Re: Design me a 3G Hemi bracket engine
[Re: ChrisJohnston669]
#1056922
08/20/11 11:24 PM
08/20/11 11:24 PM
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Joined: Apr 2006
Posts: 729
Lebanon,IN
mr2performance
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super stock
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Lebanon,IN
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Call Jeff Taylor. If you want his number pm me. Mike
MR2PERFORMANCE RACE CARS
765 483 9371
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Re: Design me a 3G Hemi bracket engine
[Re: MattW]
#1056923
08/21/11 02:11 AM
08/21/11 02:11 AM
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Joined: Apr 2007
Posts: 2,826
NY usa
540challenger
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Quote:
Quote:
I agree
I would do a 5.7 stroker which would work out to a392" motor
I would go with the eagle head for $
The 6.1 stuff is more expensive. the 5.7's can be found comeplete motors for a few hundred bucks.
With bobs K frame you could even keep the truck oil pan.
A 392" eagle headed motor could make 600hp easy with all stock stuff except for the stroker kit and lil head porting.
Rick the Apache is going for 408.45 assemble and flows APPARENTLY 358 cfm OOTB.if the # are correct you will save on porting cost.
Man I would like to know your finding this motors. Up here in toque land the are going for 1500 to 2000.
How's your G3 biuld going? Matt
What kind of chamber does the apache head have??? the more open style like the 6.1 or closed like the eagle????
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Re: Design me a 3G Hemi bracket engine
[Re: hemidup]
#1056925
08/21/11 01:28 PM
08/21/11 01:28 PM
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Joined: Nov 2008
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hemidup
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A good ole ported 5.7 head with larger valves that flows less than a ported 6.1 made more hp/tq. Both engines were close in cubes. One a 418 and the other .005" over 419.5. Both had the same 9.5:1 compression, same name brand camshaft and lift except the 419 had 2*'s wider lsa. Same dyno, same operator, same fuel and timing curve and same tuner. Both these engines were built with a blower in mind.
Jerry Williams.
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Re: Design me a 3G Hemi bracket engine
[Re: hemidup]
#1056926
08/21/11 02:02 PM
08/21/11 02:02 PM
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Irun5snd8th
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So whats it gonna take to get to 650?
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Re: Design me a 3G Hemi bracket engine
[Re: Irun5snd8th]
#1056927
08/21/11 02:16 PM
08/21/11 02:16 PM
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Joined: Nov 2008
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hemidup
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Quote:
So whats it gonna take to get to 650?
Made that type of hp/tq with 9.5:1, 231/236 @ .050. One cam was on a 112 and the other on a 114.
E85 should net you about a 3% increase in hp/tq over 110.
650hp? Need compression, heads, intake and a good stick. Easy peasie.
Last edited by hemidup; 08/21/11 02:17 PM.
Jerry Williams.
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Re: Design me a 3G Hemi bracket engine
[Re: hemidup]
#1056928
08/21/11 03:22 PM
08/21/11 03:22 PM
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Irun5snd8th
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If I do this it will be on methanol and using a Terminator most likely. The mechanical injection seemed to work well on Wheatcraft's engine.
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