Building motor questions price range.

svtcobrar2004

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Hey all, I have a stock motor/transmission cobra with a KB 2.8 making 700 and was looking to build it to 1000rwhp+. How much am I looking to spend for my cobra to safely run 1000rwhp+? Thanks
 

blownstang4.6

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Guys have ran 1000hp on their stock motors. To safely run you'll need new rods and pistons which will run you around $1500 plus misc parts, any machine work, labor for assembling shortblock or longblock. $3-4k.
 

DSG2003Mach1

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depends how far down the rabbit hole you wanna go... new pistons, rods and ARP hardware or add billet oil pump gears, new valve seats, seals, guides, etc... replace all the timing components while you're in there?

the trans, rear and fuel system could get spend too.
 

ShootyMCstabby

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At 1000rwhp+ your looking at a turbo(s) car. With all that has been stated, 20K sounds right. At that point it would be cheaper to sell your car. And find 1 already built up. There are a couple nice 1000+rwhp 03/04 cobra's for sale in the US.
 

GodStang

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Hey all, I have a stock motor/transmission cobra with a KB 2.8 making 700 and was looking to build it to 1000rwhp+. How much am I looking to spend for my cobra to safely run 1000rwhp+? Thanks


Depends on the route you plan to get to the 1000rwhp and are you asking price for whole build or motor only? Turbo is easiest but not cheap. Also are you doing the work yourself? I would think $20K is on the lower side once all is said and done. Block, heads, cams, Turbos, fuel system, exhaust, tuning, transmisson, suspension, and rear end(you say you have this).

Just an FYI my rearend was built for 2K rwhp and broke it at 700rw so something to remember.
 

badcobra

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I would keep running what you have and build a new engine on the side. Why take it all apart if the car is running? You're going to want to use a teksid or nemak block as a starting point, not an iron block. Find a Cobra crank, Molnar power adder rods and your choice of pistons.
 

geoffmt

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I had well over 30k into a 2v build


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4sdvenom

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I would keep running what you have and build a new engine on the side. Why take it all apart if the car is running? You're going to want to use a teksid or nemak block as a starting point, not an iron block. Find a Cobra crank, Molnar power adder rods and your choice of pistons.
Listen to this guy ^^^^
He is going on several years on his motor with well over 1000rwhp. Currently at 1350rwhp if you missed his sig.
 
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svtcobrar2004

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I would keep running what you have and build a new engine on the side. Why take it all apart if the car is running? You're going to want to use a teksid or nemak block as a starting point, not an iron block. Find a Cobra crank, Molnar power adder rods and your choice of pistons.

Curious, would that route be more expensive? I would have a shop do it.
 

badcobra

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Curious, would that route be more expensive? I would have a shop do it.
You would have to start a spreadsheet and add up the costs. However, once you have the new engine built, you can sell your old shortblock and recoup costs. Me personally, I would never take apart a perfectly running car to build a new engine for it when the current engine runs fine. Build the new engine on the side and sell the old one when the time comes.
 

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