572 hemi in a street car
#855540
11/16/10 08:48 PM
11/16/10 08:48 PM
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Joined: Jun 2007
Posts: 1,182 clarks summit pa
73cuda340
OP
super stock
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OP
super stock
Joined: Jun 2007
Posts: 1,182
clarks summit pa
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I have been looking at getting a 572 hemi for my 73 cuda that is going to be a street car with a trip to the track every now and then. Any thoughts on if this will be too much motor for a street car? Gas milage obviously isnt a concern, I just dont know if this will be something that will do nothing but sit there and spin whenever i want to get on it and be useless without a pair of slicks. Was considering maybe a 528 hemi too. Car currently has a 340 that i built for it. Any thoughts?
1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip,
(JA5) Silver Frost Metallic
1973 Challenger Rallye 340
1985 W150 Power Ram prospector
1986 Camaro IROC-Z 305 tpi
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Re: 572 hemi in a street car
[Re: AndyF]
#855543
11/16/10 09:55 PM
11/16/10 09:55 PM
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Joined: Apr 2005
Posts: 4,923 new berlin wisconsin
Mr T2U
master
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master
Joined: Apr 2005
Posts: 4,923
new berlin wisconsin
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it depends how it's built, what gears are in the rear, and how hard you drive. i have a daily driver 572 hemi in my 72 road runner. low compression, single plane indy intake and still makes 500 lbs torque at 1500 rpm. if you drive it reasonably it gets around 14mpg on the highway. you have to ask yourself what exactly you want and build accordingly.
perception is 90% of reality
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Re: 572 hemi in a street car
[Re: 73cuda340]
#855544
11/16/10 11:29 PM
11/16/10 11:29 PM
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Joined: Jan 2003
Posts: 12,187 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,187
Benton, IL.
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From a 340 to a 528/572 Hemi is quite a step. Have you had cars with that kind of power before? Do you have the suspension and drive train that will handle that kind of power? If not set up right, then the car could be a real handful. Or even dangerous. I personally have had big blocks all my life. Driven and raced them for 30 years. A few years ago I built an Eddie headed 500" stroker. It is a different animal altogether. Even now, with a good suspension set-up, it can break the tires loose at 45 mph if I am not careful. Things happen very fast with this level of power. And you will probably have even more horsepower given the additional inches and the fact that it's a Hemi. If possible, you may work your way up to that kind of power a little at a time. That way, you your drive train and your suspension can get up to speed.
Master, again and still
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Re: 572 hemi in a street car
[Re: kielbasa]
#855546
11/17/10 02:14 PM
11/17/10 02:14 PM
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Joined: Jun 2005
Posts: 4,041 michigan woods
imfixinmopars426
master
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master
Joined: Jun 2005
Posts: 4,041
michigan woods
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Quote:
it'll have a little more than the 340, maybe not night and day, but noticeable.
a little more? i be afraid if it hooks hard the windshield would pop out,and break the seat back...lol..
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Re: 572 hemi in a street car
[Re: imfixinmopars426]
#855548
11/17/10 03:52 PM
11/17/10 03:52 PM
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Joined: Mar 2007
Posts: 3,285 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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Broken windshields and wrinkled quarter-panels....ahhh, the price we pay for performance. There's an old saying, "Speed costs money, son. How fast do you want to go?"
Is bigger always better?
I was going to build a big old 550+ cubic inch sixpack motor, but decided to just build a little 493 inch motor because of the above mentioned items. As it is, it puts out close to 700 horsepower at 5500 rpm, and I'm still worried about those things.
I had to spend a lot of money upgrading all the links in the chain to handle that horsepower level, fuel system, ignition system, exhaust, driveshaft, subframe connectors, and Cal-tracs. With todays DOT legal drag-radial tire technology, hooking up is going to be possible, but tire life short.
Something to think about when deciding....One time I had a 500 horsepower 440" 'Cuda do an nearly instantanious 180 degree rotation at 45 mph when I popped the clutch it in 2nd while punching it. My buddy still talks about that to this day. We spun out onto the freeway backwards in a cloud of smoke. Got lucky that day. I never had that car do anything like that in the hundreds of times I'd done that before. Note to self, be f'ing careful with big horsepower.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: 572 hemi in a street car
[Re: 73cuda340]
#855550
11/17/10 04:58 PM
11/17/10 04:58 PM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
I have been looking at getting a 572 hemi for my 73 cuda that is going to be a street car with a trip to the track every now and then. Any thoughts on if this will be too much motor for a street car? Gas milage obviously isnt a concern, I just dont know if this will be something that will do nothing but sit there and spin whenever i want to get on it and be useless without a pair of slicks. Was considering maybe a 528 hemi too. Car currently has a 340 that i built for it. Any thoughts?
I guess I don't see the need for all of that. If you just want a cool street car why not a 426 or 472? As mentioned all that motor is going to require some serious mods to get it to stick. Why not do a blown hemi for that matter?
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Re: 572 hemi in a street car
[Re: CRE2004]
#855553
11/17/10 08:58 PM
11/17/10 08:58 PM
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Joined: Jan 2003
Posts: 6,392 nielsville, minn.
quickd100
master
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master
Joined: Jan 2003
Posts: 6,392
nielsville, minn.
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As we've stated above, big horsepower can get you in trouble real quick, you really have to be aware of the conditions and surroundings. The very first time I drove my truck with the 528 under the hood I darn near killed myself. -25F., I decided it would be safer to run it up to 70 before nailing it. It instantly started spinning the tires, I used up both lanes and shoulders before I could get it straightened out enough to get off the throttle. The biggest problen as I see it though is...you get used to the power pretty quick and then want more. That's the main reason I bought a Dyno, the need to find more hp. Horsepower....more addictive than Heroin. Dave
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Re: 572 hemi in a street car
[Re: quickd100]
#855554
11/17/10 11:58 PM
11/17/10 11:58 PM
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Joined: Jun 2007
Posts: 1,182 clarks summit pa
73cuda340
OP
super stock
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OP
super stock
Joined: Jun 2007
Posts: 1,182
clarks summit pa
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How is everybody else hooking up with their cars and the hemi's?
1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip,
(JA5) Silver Frost Metallic
1973 Challenger Rallye 340
1985 W150 Power Ram prospector
1986 Camaro IROC-Z 305 tpi
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Re: 572 hemi in a street car
[Re: Keith Black®]
#855559
11/24/10 12:44 AM
11/24/10 12:44 AM
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Joined: May 2004
Posts: 12,397 Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,397
Taxes & Virus's R-US, NY
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Quote:
Quote:
How is everybody else hooking up with their cars and the hemi's?
We run a couple of Hemis on pump gas, and getting the rest of the car to survive them is usually the biggest issue. The little 477 pump gas street Hemi in the Charger has killed 4 rear ends, 1 drive shaft, a set of brakes, 10 wheel studs, and a set of leaf springs, and a set of seat brackets....That little engine has pushed the 4010lb Charger to 11.1 at 122mph and a 1.58 60ft...
My 484 Hemi in my Cuda has killed just about everything from kinked quarter panels to inner fenders torn off the frame rail, to crushed oil pans, crushed headers, cracked window glass, de-arched leaf springs, broken pinion snubbers, and a gawd aweful amount of rear tires....Should go 9's, but I always break somthing.
A 572 will do all that and more I am sure...
Last edited by Dragula; 11/24/10 12:45 AM.
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