Lingenfelter Flat Crank LS - engine dyno
#25
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The one on the right is a flat (or 180*) crank:
http://www.lsxtv.com/features/car-re...d-drag-camaro/
Here's an illustration (that I found on corvetteforums) that better details the differences between the two:
http://forums.corvetteforum.com/c6-z...e-crank-8.html
http://forums.corvetteforum.com/c6-z...ane-crank.html
http://www.lsxtv.com/features/car-re...d-drag-camaro/
Here's an illustration (that I found on corvetteforums) that better details the differences between the two:
http://forums.corvetteforum.com/c6-z...e-crank-8.html
http://forums.corvetteforum.com/c6-z...ane-crank.html
#31
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Stupid. If the platform does not have an overhead cam setup, it is dumb to try and run that many RPMs on anything but a very high end race car build. Been proven time in and out that a pushrod motor has a very hard time controlling the valve train at 8,000+ rpms. Plenty of examples just on this website. Give me a 90 degree crank with this type motor any day. And no, it does not sound exotic.
#32
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Stupid. If the platform does not have an overhead cam setup, it is dumb to try and run that many RPMs on anything but a very high end race car build. Been proven time in and out that a pushrod motor has a very hard time controlling the valve train at 8,000+ rpms. Plenty of examples just on this website. Give me a 90 degree crank with this type motor any day. And no, it does not sound exotic.
#33
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Stupid. If the platform does not have an overhead cam setup, it is dumb to try and run that many RPMs on anything but a very high end race car build. Been proven time in and out that a pushrod motor has a very hard time controlling the valve train at 8,000+ rpms. Plenty of examples just on this website. Give me a 90 degree crank with this type motor any day. And no, it does not sound exotic.
Lingenfelter Performance Engineering > xfactor_pitbulls
#34
Dude, you're out of line.
Stupid. If the platform does not have an overhead cam setup, it is dumb to try and run that many RPMs on anything but a very high end race car build. Been proven time in and out that a pushrod motor has a very hard time controlling the valve train at 8,000+ rpms. Plenty of examples just on this website. Give me a 90 degree crank with this type motor any day.
So true. If I could find a cam that doesn't sacrifice low end for peak HP @ around 8K while using 2v heads, I'd be happy. Problem for me is the low end sacrifice it takes to do so on our motors (90* crank, pushrod).
#37
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Pushrod and RPM
Drag racing pushrod engines have been going to over 10,000 RPM for over 15 years or more (Pro Stock, Pro Stock Truck and many other classes).
Road racing and circle track racing engines (short duration and endurance applications) pushrod engines routinely go to 8500 to 9000 rpm.
No specific RPM point separates pushrod from overhead cam engine in terms of maximum RPM capability - it is just a question of valvetrain mass and control pressure (valve springs, pneumatic springs, etc.).
Road racing and circle track racing engines (short duration and endurance applications) pushrod engines routinely go to 8500 to 9000 rpm.
No specific RPM point separates pushrod from overhead cam engine in terms of maximum RPM capability - it is just a question of valvetrain mass and control pressure (valve springs, pneumatic springs, etc.).
Stupid. If the platform does not have an overhead cam setup, it is dumb to try and run that many RPMs on anything but a very high end race car build. Been proven time in and out that a pushrod motor has a very hard time controlling the valve train at 8,000+ rpms. Plenty of examples just on this website. Give me a 90 degree crank with this type motor any day. And no, it does not sound exotic.
#39
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Stupid. If the platform does not have an overhead cam setup, it is dumb to try and run that many RPMs on anything but a very high end race car build. Been proven time in and out that a pushrod motor has a very hard time controlling the valve train at 8,000+ rpms. Plenty of examples just on this website. Give me a 90 degree crank with this type motor any day. And no, it does not sound exotic.
It can be done, and has been proven to be done well over 8k rpm's. Doing it old school with pushrods and 90* crank takes big $$$ too though. But, at the $/rpm and hp....I'm not completely sold that the 180 crank is really that much better than a 90*. Would really have to see what a 180* crank LS motor on nuts max effort could do before i was sold.
Have to keep in mind this one was specifically designed for FI.
It's not a tube chassis 2010. It's a SS 2010 to be raced in Real street 275 class....
Is this true!?!?!?!
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there's a few sled pullers that are turning 5k+ rpm with lots of displacement. couple of Duramax's, quite a few Cummins. not as many Powerstrokes, but they're still out there.