cloneman315
Active member
Re: Mrsyclone... oh no
Very simple.....big power stuff all breaks no matter what the parts!
Very simple.....big power stuff all breaks no matter what the parts!
Very simple.....big power stuff all breaks no matter what the parts!
I disagree somewhat (though it depends entirely on what everyone calls "big power" nowadays). Here's why:
Many people today use production blocks to build performance engines. When the V6 Even-Fire engines were designed,
no one dreamed of the power cylinder heads and valvetrain components could be made to deliver. Today's blocks benefit
from decades of technology, both in racing and manufacturing. Metallurgy, machining techniques, and overall design
features are all vastly improved in the last decade. Castings are designed with thicker cylinder walls which allow larger bore sizes and
superior ring seal. Blocks also have thicker decks, and various deck heights to allow more flexibility in designing engine
combinations. Likewise, the main caps are much stronger, and the water jackets are enlarged to enhance cooling. With
earlier V6 parts, you're putting your money towards older hardware instead of labor."
For example, an LSX376 block (Cast iron = $2,483.97 and AL = 1,521) can easily withstand 15psi. It doesnt care
where boost comes from (supercharger or turbocharger) but there are parasitic losses with driving a supercharger.
The higher the power and boost, the greater the power losses (unfortunately most being consumed by the blower
at peak power). The result is neither registered on the dyno nor available to the vehicle. By contrast a turbo
is driven off exhaust gas and unless backpressure is high, losses with driving the impeller are minimal.
Car Craft bolted a 76mm PT7675 with 10.5 psi to their LS373 and made 836 hp and 760 ft-lb torque. With
14.6 psi 951hp; and at 19.5 psi 1,082 hp. Granted folks on this site can argue about Net vs Gross vs Flywheel vs Rear Wheel
hp but thats still usable and not extreme for a LS3 6.2L 430-hp standard engine. Was it at the level MRSYCLONE had....nope.
But Morgan is correct in suggesting that a lot can be made without being custom or exotic.
-Larry
That's like comparing a Ferrari to a Pinto IMO.
Very simple.....big power stuff all breaks no matter what the parts!
You can laugh all you want, I didn't read through to see who said LS engines were indestructible either, but personally speaking what "kills" it for me is the fact that a V6 crank is $2k-$2.5k and a 6 month wait and pretty much a prerequisite after 650 HP. You can build an N/A junkyard block LS with that kind of HP for the cost of a V6 crank :rotf:
Morgan get your facts straight, those cranks cost $3400 to the door. :lol: Don't forget I am pretty sure that there is only one company that even makes them anymore. I just got pricing from Bryant a few days ago on a customer truck and cost was $3400 and a 14 week turn around.
A junkyard LS1 motor isn't going to hold the power to run high 8's in AWD Syclone like Robert has.
Ok let me rephrase that.... Modified anything! I have seen six figure Offshore marine engines built with the best parts that explode in a blink of a eye. Robert has been doing this long enough and its just a inconvenient bump in the road and a excuse to build it better the next time....The statistics and the math and all the other BS means nothing.....
The rod is centered in the bore but the big end -is- narrowed a bit, more on one side than the other. Comparative rod bearing load (V6 vis V8, everything else equal) must be considerable. This why odd-fire cranks work. Rod bearing is the same I believe. Stiffer -and- wider journal then us.