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#1385586
02/11/13 03:39 PM
02/11/13 03:39 PM
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Post deleted by moparts
[Re: rickseeman]
#1385588
02/11/13 03:45 PM
02/11/13 03:45 PM
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Re: Stroking a Hemi .. Is it really worth it??
#1385590
02/11/13 03:57 PM
02/11/13 03:57 PM
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Joined: Jan 2012
Posts: 2,652 Stuttgart, Arkansas
rickseeman
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master
Joined: Jan 2012
Posts: 2,652
Stuttgart, Arkansas
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A 426 Hemi has basically no power compared to a 572 Hemi. A 572 flat tappet single 4 barrel makes 800 horsepower. Thats over 100 HP more than a Pro Stock Hemi made in 1970 with 2 Dominators on a tunnel ram with a roller cam. The 572 shifts at 6500 RPM's and lives forever. The old Pro Stock 426 lives a few months until the pressures of high rpm's and stiff valve train blow up.
2011 Drag Pak Challenger
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Re: Stroking a Hemi .. Is it really worth it??
[Re: mopacltd]
#1385594
02/11/13 05:48 PM
02/11/13 05:48 PM
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Joined: Feb 2007
Posts: 2,578 sweden
1Fast340
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Posts: 2,578
sweden
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Quote:
What about the early years of de-stroking the Hemi to 366 and 396 cid? They seemed to make some pretty good HP!
that was to get into a better wheightbraket in prostock.
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Re: Stroking a Hemi .. Is it really worth it??
[Re: 1Fast340]
#1385595
02/11/13 06:01 PM
02/11/13 06:01 PM
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Joined: Jan 2003
Posts: 6,392 nielsville, minn.
quickd100
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Posts: 6,392
nielsville, minn.
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First, YES IT'S WORTH IT!!! Go as big as your wallet will let you. My 89.5 octane, head limited, 605 made 852hp@5800rpm and 818ftlbs.@4800. It should live a long time and never have to see 6500rpm. The old De-stroked Hemis made good power too but they had to rev them to the moon.Dave
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Re: Stroking a Hemi .. Is it really worth it??
[Re: quickd100]
#1385596
02/11/13 07:16 PM
02/11/13 07:16 PM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
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Balt. Md
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Yes of course as has been said. I can say I was amazed at how much more low end torque my 493 has compared to my old 440 even though I do have better heads on this eng. But the low end torque is great for a street car that is not a light weight. I can kinda see where you might come from only because I have seen a few stroker cars over the years that I thought did not run as hard as they should but found out as they were built to run like they did. One guy I met had a Roadrunner with a 505 stroker wedge and only ran 11.50's at his best. I thought it should have been faster until he told me he built it to run at low rpm as a street cruiser as he did not want to run it real hard. He wanted to limit it to about 5000 rpm but run mid 11's with tons of torque and he only ran 3.23's in it. It was a nice cruiser on the highway at 70 mph and still ran his mid 11's with ease. But to many it looked like it should have been a stronger running 1/4 mile car. But the owner got what he wanted. I have never driven a Hemi stroker but I consider my 493 wedge a mild stroker by todays standards and it puts one very large smile on my face with its tons of torque. Ron
Last edited by 383man; 02/11/13 07:20 PM.
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Re: Stroking a Hemi .. Is it really worth it??
[Re: 383man]
#1385597
02/11/13 07:48 PM
02/11/13 07:48 PM
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Joined: Dec 2003
Posts: 3,957 West Coast, CA
Troy
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Posts: 3,957
West Coast, CA
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Completely streetable with stupid power. I would never build a 426 when I could have a 472 or a 484. There is just no reason to.
....there is nothing like driving my 1968 Hemi Dart around town and having people looking at you like you're nuts!!
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Re: Stroking a Hemi .. Is it really worth it??
[Re: rickseeman]
#1385600
02/12/13 03:26 PM
02/12/13 03:26 PM
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Joined: Nov 2009
Posts: 520 New Zealand
nz383man
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Posts: 520
New Zealand
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Quote:
A 426 Hemi has basically no power compared to a 572 Hemi. A 572 flat tappet single 4 barrel makes 800 horsepower. Thats over 100 HP more than a Pro Stock Hemi made in 1970 with 2 Dominators on a tunnel ram with a roller cam. The 572 shifts at 6500 RPM's and lives forever. The old Pro Stock 426 lives a few months until the pressures of high rpm's and stiff valve train blow up.
If you are building a new Hemi & it dosn't have to meet any cubic inch rules why would you not go bigger? With the better materials, machining & quality control these days the rotating weights of many of these stroker combs is getting down to small block rotating weights so the big engines will rev freely, unloke the strokers from years ago.
Let's say you built a 572 with 800 HP as above, that would be around 1.4 HP per cube, apply that to your 426 & you get 600 HP, I think the guy with 200 extra HP will drive right past you.
I have been for a ride in a 4000 lb '72 Roadrunner street/show car that has a 605 Indy Hemi that has 900 HP, 850 ft/lbs & the guy drove it 2000 miles return trip to get to my end of the country, he red lines it at 6,700, he has a ball & has done for years.
There is no replacement for displacement!
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Re: Stroking a Hemi .. Is it really worth it??
[Re: Big Squeeze]
#1385601
02/15/13 12:09 AM
02/15/13 12:09 AM
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Joined: Dec 2003
Posts: 3,957 West Coast, CA
Troy
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Joined: Dec 2003
Posts: 3,957
West Coast, CA
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Search my "User Post" and you will see many post of my Dart. Thanks for asking.
....there is nothing like driving my 1968 Hemi Dart around town and having people looking at you like you're nuts!!
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Re: Stroking a Hemi .. Is it really worth it??
[Re: hustlin hoosier]
#1385604
02/15/13 01:34 AM
02/15/13 01:34 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Posts: 52,972
Romeo MI
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If the OP wants to turn up the revs he can make pretty damn close if not equal to the bigger engines... he might have to turn 10K to what others are turning 6500... a PS is 500" and turns 10k+ and makes 1350 hp so it all depends what he wants to do AND what kind of price tag And to the OP... its not always the engines fault a car is slow.... the chassis is a major factor
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