Hello my name is Khylil, I have a C3 and was wondering can I get a 6-700hp build? 8k budget

 

Are you building this yourself??
Are you factoring in the cost of everything south of the engine to withstand this level of power?
The factory transmission, all U joints, rear def. Rear stub axles, etc, etc. Will need substantial beefing up to withstand any abuse above about 450 H.P.
Short answer..... NO.

 

What type of engine are you wanting to use? Big block, small block, LS?

 

small block I can’t find any good big blocks where I am

 

can u give me a list of things I can pay the price . I just want a fast toy I can take on the drag strip every now and then

 

Check out Blueprint Engines. I doubt you could build an engine for much less than you get out of the box from them, and they come pretty well regarded, and with warranty. IMO, they have some amazing deals on SBC stroker motors. As long as you don't get too crazy with the horsepower and torque, and don't abuse the hell out of your car, the stock Corvette driveline is pretty stout.

If you intend to go to the dragstrip more than you are leading us to believe, then beefing up the drivetrain and brakes is a great idea- Basically what 4-vettes called out, for starters.

All it takes is one bad launch to break something, even if only occasionally going to the drag strip, so bear that in mind. Just depends on how much moolah you have to spend, as it gets pricey real quick. Do your due diligence and research from a multitude of reputable sources, however....

https://blueprintengines.com/collect...atible-engines

 

You could maybe build an LS to put out 600-700 H.P. for 8K, if you knew what you were doing and found some deals, but as said before the transmission and rear axle would need upgrading. I think you need to do a lot of research and decide if a C3 Corvette is really what you want.

 

This is a Hell of a deal. Have you ever driven a truly fast car? You may find that 400+ H.P. is plenty of fun.

https://blueprintengines.com/product...-for-87-octane

 

Also, hate to say it, but the C5 Z06 is a hell of a bargain for what you get these days. 400+ HP, and handling to boot.

 

No.

To get 2 horsepower per cubic inch out of a normally aspirated Gen 1 small block, you have to build something equivalent to the engines used by NASCAR. In order to achieve 700 hp, they have to spin those engines around 7500-8000 rpm. To do that, they pour tens of thousands of dollars into each engine.

Your other option to get to 700 horsepower is to use a supercharger or turbocharger system. Your budget is less than half of what would be required to build a reliable supercharged engine to handle the boost level required to get to 700 hp, and that doesn't take into account the other chassis mods you're going to need to do...

If you do an LS, you can get to 700 horsepower normally aspirated for about $20,000, not counting all the costs you will have to convert your car over to accommodate the engine:
https://borowskirace.com/products/70...43480143790292

You can get a 750-horse LS7 for around $33,000:
https://www.autoevolution.com/news/m...95-124371.html

The GM 427 LS7 Crate Engine puts out 505 horsepower for a cost of about $18,000.
https://www.chevrolet.com/performanc...engines/ls/ls7

Your budget should allow you to build or buy something in the 400-450-hp range, and that assumes you're in the U.S.

Lars

 

I would agree with starting with a C5 or newer model year Corvette. Some of the newer Corvettes have incredible horsepower and are reliable enough to be a daily driver. I have seen the C5 Z06 Corvettes sell for $10k and less with miles on them. What a car to start with, you could make a lot more HP reliably than you could for the money invested in a C3. I totally understand why you want to get C5 power out of a C3, the C3 is the classic "Corvette Style" in my humble opinion. The C5 and on Corvettes are made to handle the power that you want, the C3 was never made to have anything near 800hp.

Besides just the engine as many have mentioned you will need to replace many of the rear end components and other parts to handle that much power without hurting the frame of the Corvette.

The Blueprint 383 is a nice looking beast and not that expensive to boot when you include the fact it has a warranty. The problems start when you add things like the belt drive and accessories, you can easily spend another $3-4k getting the engine run-able in your Corvette.

 

You can get something in that range for about half that.- around 12K, normally aspirated BB...

https://blueprintengines.com/collect...mplete-engines

Or you can get 540 HP with a SBC stroker - closer to the OP's budget.

https://blueprintengines.com/collect...r-up-to-540-hp

Jeez. Who needs 700HP in a C3 anyway when you can start with a platform (C5 Z06 or similar) that would support more power without re-engineering the entire car to support that level? With all the upgrades the OP would have to do to support that HP/TQ, it could be well into the 5 (or even 6) figures range... I would not recommend a C3 at the 700HP power level, unless as a dedicated track/drag car. IMO, you're pushing it to the limits even with 500HP.

The OPs budget simply does not match what he wants to get out of a C3, because at 700HP you're going to have to beef up the rest of driveline....there is no other way to do it safely.

I'm doing a 500+ HP build in my '69 (I've decided to up the ante a bit from the original proposed 425HP), and that's going to be plenty scary enough... At that level, things WILL absolutely break if I were to take it to the strip and have a bad launch - or even a proper launch for the best ET - that would be just a matter of time. At 600-700HP, no way....You're spending at least as much on driveline components as the cost of the motor (and likely much more) to keep up with that power level. I think the motor would be the 'cheapest' part of a project like this...

The C3 Corvette was simply not designed to handle that level of power safely (for both car and driver) - chassis twists, fiberglass cracks,etc etc...Unless you have a spare 200K floating around to pay someone to make it into something it is not. That is my opinion...

Hotrod/race a C5 Z06 (much better starting platform), and cruise in the C3. As mentioned earlier, even driving a 400-425 HP C3 is an exhilarating joy which doesn't get old. At that power, you'll very likely be putting more HP/TQ to the wheels than the early C3 cars made at the crank when they were new (L71, LS5, L88, and ZL1 models aside). You may not be the quickest/fastest in town, but you'll be one of the coolest, while still being very quick/fast...

Depending on tires, driver, and gearing, 425 HP should get a C3 0-60 in the high 4 second range, and somewhere around 12.5 second quarter mile trap times. To most folks, that's probably more than enough. You can spend 200k on a 700HP C3 screamer and still get spanked by a Tesla Plaid or base model C8 Corvette for far less, so keep things in perspective.

 

Short answer....Not with that budget...... (especially a small block). Figure double that budget. If money doesn't matter, buy a Shafiroff crate engine...https://www.shafiroff.com/chevy-pump...34-bigdawg.php

 

I run a 69 vette with 650 hp all day long very street friendly same as my car when I had 350 hp and with AC to boot. not gunna happen on that budget.

 

Very nice, but unless the OP is a speed freak, 400-425 HP should fit the budget, and without having have to spend tons of cash on drivetrain upgrades.

650HP - Jeez. You, sir, are a brave man (or just stone cold nuts- haha). I'll be happy with 507HP. 650HP must be an absolute monster...

 

lars laid it out for you.
others also.

good luck

 

sure you can with nitrous and a power adder like a super charger or a turbo but it wont last too long.

I would shoot for 500 hp naturally aspirated and not use slicks so you dont destroy the power train and any fiberglass that the flying pieces hit. I got just over 400 with my 327 for under 8K. Like others have suggested look for a crate motor and you should
heres a good selection of crate motors with some 500 hp motors for $7000 to close to $8000
https://www.summitracing.com/search/...=crate%20motor

 

We bought a Shafiroff 434 - all new parts- block- everything. It failed in 40, yes 40 street driven miles. They didn't want to fix it and charged more to fix it. The 2nd time was great- it lasted 50 miles. Spend your money as you please. Two rebuilds, over 6-8 months, and a total of 90 non-race miles.

 

Not a monster very smooth and friendly and have vacuum to run head light doors and wiper door and fits under hood no problems .

 

OP
Assuming you get to 700-750-800hp you are installing it in a car designed for 300-400hp. Can it be done, yes, all the time. Can it be done for $8k no.

Everything south of the flywheel needs to be addressed or it will break the first hard launch or dead hook you get on the track.

Muncie or BW ST10 4 speeds won't handle it, new Muncie super cases won't handle it. Tremic are good to about 600hp and over time will fail. G-Force trans will work, a built TH400 will work.

The stock IRS and differential will be reduced to instant junk with a dead hook. You need a Tom's 12 bolt 1480 setup axle to axle, which alone is over your budget. Solid Spicer u-joints will break in half, been there done it and have all the pictures to prove it.

Those are the good parts, you can go to knockoff parts sold today by a variety of places, I have examples of those in my shop. They are not instant junk; they are overpriced copies that will become instant junk. Beware of "Racer" websites that are slicker than greased lightning.

I get calls daily with questions like this and can build the parts to handle it, but the best suggestion I can give is to drag race a different car- unless money is not a problem. I build for those guys too.

Good luck, it's not impossible by any means, just how practical only you can determine.