I have a concern about the body flexing and cracking,I'm building a street rod and put new leaf springs (5 leaf) new high end shocks heavy duty sway bars and a caltracs suspension kit but the frame is stock.Has anyone done a similar project im going to be pushing 600hp any suggestions would be great.
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Re: 600 hp 62 corvette
karl------
All I'll say is something I've said many times before: it is possible to have too much horsepower in a Corvette. Chassis and drivetrains are designed around a certain horsepower range. Getting outside that range without performing other, usually major, modifications and one is asking for trouble.In Appreciation of John Hinckley -
Re: 600 hp 62 corvette
It's not peak HP the can create issues, but peak torque. The C1 chassis is less stiff in both torsion and bending than the C2 chassis, and WAAAAAY less than a modern Corvette. Engine torque places a torsional load on the chassis and stiffer springs, bars. and shocks will do so too in addition to increasing loads/stress at the mounting points of these components.
Unless you can find someone who has done this before, found all the weak points, and designed/tested suitable reinforcements, you are starting your own R & D project. You are more likely to find help on the Corvette Forum or other discussion boards since most NCRS guys are into originality and most modifications, if any, are mild.
You might also seek some references from the manufacturers or vendors of all these parts.
DukeComment
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Re: 600 hp 62 corvette
Contact 427HotRod or DevilDog on the Corvette Forum via PM...
They jointly built a 500+hp "sleeper" mill on the original "X" chassis in an otherwise stock '61 that dynoed 495HP with WCFB dual quads (higher with Holleys)....this was 4-5 years back and the car is street driven regularly..
https://www.corvetteforum.com/forums...ll-almost.htmlComment
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Re: 600 hp 62 corvette
Just curious, what motor are you putting in this car? And how do you expect to get that kind of power to hook up the rear wheels? I have 425hp in my 62 and can fry the tires in first gear, hard to imagine getting the tires to bite with another 175 horses!Comment
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Re: 600 hp 62 corvette
Go ahead and kick it up to 750HP at least. At least when you loose it and hit that tree it won't matter but you are more likely to die in an instant and not suffer as much as you had with 600HP.
JRComment
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Re: 600 hp 62 corvette
Why not just go for a ZO6 or ZR1 that you could have that kind of power and not twist up the body and frame?
If you are building a drag car a total new frame and body mounting will be necessary to put down that kind of power.
Even the “street outlaws” have total fabricated cars underneath a stock looking body. But those are not real street cars. They start with a vintage tag and build a car around it.
Good luck in your venture.Comment
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Re: 600 hp 62 corvette
Show me any C1 Corvette that has not developed body cracks (flaws) and it is in a garage or trailer.
They all crack at one time in their life.
1200+ miles on this one but never raced hard and still no cracks, YET...Comment
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Re: 600 hp 62 corvette
383 stroker with big headsComment
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Re: 600 hp 62 corvette
I would like to see the dyno results before i believe 600hp at the rear wheelsComment
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Re: 600 hp 62 corvette
I would hardly call 1200 miles as a evulation for detection of cracks. Generally a few wheel stands and coming down in a “gasser” should over time take a toll. What does it do in the 1/4 mile? Looks like a drag car..... yes?Comment
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Re: 600 hp 62 corvette
I would believe 600hp with a 383 and big heads. All hinges on the cam but definitely possible. Not too tough to make approx 1.5hp/CI. Anyway, you should be considering a roll cage for safety if the car is going to see decent race duty and that will go a long way toward stiffening the chassis. I would bet that is largely all you would need in terms of frame strengthening. It mostly depends on whether you plan to race with slicks. The problem with twisting chassis almost always result from cars run with big tires that hook at the line. I have a boss 572 making 840 hp 720 ft/lbs tq in a 69 Mustang without a roll cage with only frame connectors (remember that's a unibody car!) and I have never had a problem with twisting but I have only run it with drag radials and they don't hook quite as well as true slicks.Comment
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Re: 600 hp 62 corvette
600 HP gross (STP correction) on a lab dyno from a 383 is going to require BIG heads, BIG compression, and a BIG cam, and a very stout bottom end to achieve the 7000-7500 revs it will take to achieve this level of power output in a naturally aspirated Gen I small block.
Put it in the car with any reasonable street legal exhaust system that you can put under a C1 chassis and SAE net RWHP will likely be less than 450.
DukeComment
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