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Re: 426 Hemi build want 600-650 hp any ideas.
[Re: 3ddart]
#1131512
12/14/11 07:11 PM
12/14/11 07:11 PM
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Joined: Jun 2008
Posts: 768
Maryville tn
67coronetman
OP
super stock
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OP
super stock
Joined: Jun 2008
Posts: 768
Maryville tn
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The ace i have in the hole is i have a good friend that has ported heads for yrs & worked for a mopar shop that builds hemi alot so the head work & intake port work will cost less than half of what it would cost. And he plans on running a solid roller cam set up will keep you all posted as to how it turns out. Quote:
67 coronetman: dragula is right as far as paying the piper, no free lunch, lol. if you compare the cost and work involved to get it through heads or cam (i had hours in clearencing the pushrod holes for the hyd roller) to the cost of a stroker crank and balancing, the crank is the way to go. i had my bottom end when i started the build so i used what i had . i did as much of the complete project myself as i could (it took me 9 years) so cost was a big factor and since it was going to be mainly a street car whatever hp it made was ok with me. that being said if i was doing it again i would go stroker and sell the standard crank and would make more power at a slight increase in price. dave
Old car are me......
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Re: 426 Hemi build want 600-650 hp any ideas.
[Re: 67coronetman]
#1131513
12/14/11 07:20 PM
12/14/11 07:20 PM
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Joined: Sep 2005
Posts: 661
Iowa
jon01
mopar
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mopar
Joined: Sep 2005
Posts: 661
Iowa
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I'm surprised nobody has suggested some kind of forced induction.
8:1, F1 ProCharger and alcohol injection should give you an easy 650hp on pump gas with a very mild cam and nice driveability.
68 Charger R/T - #'s matching car, 499/727/3.91
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Re: 426 Hemi build want 600-650 hp any ideas.
[Re: jon01]
#1131514
12/14/11 09:51 PM
12/14/11 09:51 PM
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Joined: May 2004
Posts: 12,395
Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,395
Taxes & Virus's R-US, NY
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Quote:
I'm surprised nobody has suggested some kind of forced induction.
8:1, F1 ProCharger and alcohol injection should give you an easy 650hp on pump gas with a very mild cam and nice driveability.
Cause its not cheap, needs to fit the engine bay, and then the rest of the vehicle has to survive it. Not to mention he wanted to stay with a stock style hemi from what I read above...I looked at doing it with mine.
484 cubes, 8.5:1 compression, F1-R procharger, 400cfm head flow, 10-12psi boost puts me at over 1200hp, and they said that was de-tuning it considering my heads....My car won't survive 1200hp in its current state. Its twisting all over the place with the 780hp I already have...And besides, I can go all aluminum hemi with 604 cubes and probably go just as fast and still be having fun...The 600 cube hemi's I have seen look like a lot of fun to drive and guys are flying with them. One in particular I saw this summer sticks in my head. It was done by FHO, and it sounded awesome. Not that a procharged engine doesn't, but you could tell something was different about this one.
Procharged hemi set-up:
http://www.thesuperchargerstore.com/ken%20miller.html
I have seen some of the stock stroke hemis run pretty hard, but it takes a little work, and you have to be willing to live with it. I drove mine at nearly 600hp for about 4-5 years, and the stroker is night and day difference. It does go thru more fuel than my old hemi, but wow.
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Re: 426 Hemi build want 600-650 hp any ideas.
[Re: 67coronetman]
#1131516
01/04/12 02:21 PM
01/04/12 02:21 PM
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Joined: Oct 2011
Posts: 559
Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Quote:
Well thanks for all the ideas.! But he will have it done without stroking it or big compression staying at 10:1 when the dyno is done i will post the results i bet there is going to be 600 + 
Well, I really do believe your friend has made a wise choice. Sometimes this stroker stuff just gets out of hand.
Even though this example is not a Hemi it will illustrate how easy it is to get to 600 HP. 451 wedge, ported 452 iron heads (290 cfm), M1 single plane, 950 cfm 4150, solid street roller 254/260 @ .050, .582/.588 lift, 9.5:1 compression, 621 HP @ 6100 rpm and 588 lb-ft @ 4600 rpm.
If you friend can do anything at all with porting the heads, he will kick this 451's butt.
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Re: 426 Hemi build want 600-650 hp any ideas.
[Re: LaRoy Engines]
#1131518
01/04/12 04:46 PM
01/04/12 04:46 PM
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Joined: Mar 2004
Posts: 3,287
Dalton, MA
Slipknot440
master
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master
Joined: Mar 2004
Posts: 3,287
Dalton, MA
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I was in the same boat about 3 years ago. I wanted 600+ but I wanted to be able to drive it too. I took the drive it option: stock bore, stock stroke, 9:1 pistons, iron block, iron heads, roller cam, cast manifolds, curved distributor with a race carb made 511 hp, my crappy 750 holley made 498 hp. 600+hp is great if you line up with all the high-end new muscle but think about all the extras that come with that much power...i.e. more money into the trans, frame twist, rear end etc. Those were the extra choices that kept me with a semi stock hemi as opposed to a 600+ street killer
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