Cost of a vk56 swap

ImportConvert · 01-31-2012, 06:27 AM

Quote:

Originally Posted by 1slow370

there's a guy in australia building a 2500hp vk56 slingshot ls's aren't some god king of the v8's, theres just a lot more of them, factory installed in sports cars, without truck manifolds and cams. the tech in an ls is 60yrs old at least ford finally went DOHC

Edit: will be buying motor in next couple weeks have money set aside so its a go. found a replacement for the intelligent key/ keyless start to rewire the door locks and add a nice alarm even remote start should i dare install one on a manual. the main boxes will be ms3, viper 5701 + custom built relay and diode board for doors and push start, racelogic traction control, standalone gauges, and painless or junkyard re-purposed fuse/relay/breaker box. I might wire 4 switches together as a simple 4-bit key combo on dash to start car too, as in flip the four switches to certain positions in order to power start button.

Cool story and all that, but the LS7 is still king of the NA V8 motors under $40-50K in price. Mercedes has one in their AMG car that makes about 50-75hp more IIRC ...and costs about 300% more.

DOHC isn't all it's cracked up to be. The 5.0 Coyote is a great engine, but it weighs about the same as the LS7 and produces far less power, especially at lower rpms.

GM experimented with DOHC designs and stuck with cam-in-block for a reason. These reasons have been detailed again and again and again, but suffice it to say when you have a 450# motor complete from manifold to oil-pan that will make over 500 horsepower and pass emissions, you have a winner. Now consider that it will produce over 500 horses at the TIRES with exhaust and a mild cam and a tune.

Technology is great, and I am sure someday it will bring us an engine lighter than the LS-series that can produce more horsepower, but so far it has failed to do so within 2-300% of the cost of the most expensive LS-engines available.

1slow370 · 01-31-2012, 08:24 PM

Quote:

Originally Posted by ImportConvert

DOHC isn't all it's cracked up to be. The 5.0 Coyote is a great engine, but it weighs about the same as the LS7 and produces far less power, especially at lower rpms.

GM experimented with DOHC designs and stuck with cam-in-block for a reason. These reasons have been detailed again and again and again, but suffice it to say when you have a 450# motor complete from manifold to oil-pan that will make over 500 horsepower and pass emissions, you have a winner. Now consider that it will produce over 500 horses at the TIRES with exhaust and a mild cam and a tune.

Technology is great, and I am sure someday it will bring us an engine lighter than the LS-series that can produce more horsepower, but so far it has failed to do so within 2-300% of the cost of the most expensive LS-engines available.

in the 5.0's defence per your story if it's all price vs performance than a 5.0 that costs a fourth of an ls7 should only make a fourth the horsepower right?
the vk is good for 600hp in stock form same as an ls2/ls3 and they still cost twice as much at the yard. Titan motors are cheap, cheaper than a vq for that matter. if i wanted a car with an ls in it theres no point of putting it in a z go buy a corvette, if you want a car with a vk in it your SOL without a swap, i believe swaps should be done with motors from the same make unless none are available

ImportConvert · 01-31-2012, 08:27 PM

Quote:

Originally Posted by 1slow370

in the 5.0's defence per your story if it's all price vs performance than a 5.0 that costs a fourth of an ls7 should only make a fourth the horsepower right?
the vk is good for 600hp in stock form same as an ls2/ls3 and they still cost twice as much at the yard. Titan motors are cheap, cheaper than a vq for that matter.

Where are you finding 5.0 Coyote's for $4K?

How much does that VK motor weigh?

StockSC300 · 04-05-2012, 10:53 AM

[QUOTE/]
GM experimented with DOHC designs and stuck with cam-in-block for a reason. These reasons have been detailed again and again and again, but suffice it to say when you have a 450# motor complete from manifold to oil-pan that will make over 500 horsepower and pass emissions, you have a winner. Now consider that it will produce over 500 horses at the TIRES with exhaust and a mild cam and a tune.
[/QUOTE]

Actually GM didn't do anything other than hire Lotus to do all of the engineering and design for the LT5 if that is what you're talking about??

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04-05-2012, 10:53 AM	#4 (permalink)
StockSC300 Base Member Join Date: Apr 2012 Location: Sarasota Posts: 1 Drives: Nissan 240sx 1UZ-V8 Rep Power: 15	[QUOTE/] GM experimented with DOHC designs and stuck with cam-in-block for a reason. These reasons have been detailed again and again and again, but suffice it to say when you have a 450# motor complete from manifold to oil-pan that will make over 500 horsepower and pass emissions, you have a winner. Now consider that it will produce over 500 horses at the TIRES with exhaust and a mild cam and a tune. [/QUOTE] Actually GM didn't do anything other than hire Lotus to do all of the engineering and design for the LT5 if that is what you're talking about??