Why 6200 rev limiter for the LSA engine?

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Mar 4, 2011 | 07:38 AM

#21

good2go

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Quote:

Originally Posted by Bo185

Also the max shift speed of the 6l90 used in the CTSV is 6200RPM's I would suspect thats the real reason as the 6l80/90 doesn't like RPM's higher than that.

That would explain the the auto units as for the manual cars are the limited the same?

I've got the automatic and with the tune it shifts just fine at 6,400 rpm.

Mar 10, 2011 | 02:45 PM

#22

newschool72

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From: georgia

i just dont think the pistons can take the extra boost that comes w the higher rpm. im an n/a kind of guy, but dosnt boost go up with rpm ?

Mar 10, 2011 | 03:17 PM

#23

good2go

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Quote:

Originally Posted by newschool72

i just dont think the pistons can take the extra boost that comes w the higher rpm. im an n/a kind of guy, but dosnt boost go up with rpm ?

People are running 16+ pounds of boost with these pistons. I'm not saying for how long...but they are.

Mar 15, 2011 | 03:38 AM

#24

MotoFreak

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i dont think the LSa has the same blower as the LS9... i THINK. not fully sure

Mar 15, 2011 | 05:53 AM

#25

GA95DCMSS

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From: SC

Quote:

Originally Posted by MotoFreak

i dont think the LSa has the same blower as the LS9... i THINK. not fully sure

Quote:

Originally Posted by Old SStroker

Google is your friend. Use your friend.

http://reviews.carreview.com/blog/ch...orvette-zr1/2/

http://www.media.gm.com/us/cadillac/...CTSVindex.html

LSA has 1.9L blower and a single brick IC, LS9 has a 2.3L blower and a dual brick IC as noted above.

Design goals were 620 hp for the '9 and 550 for the 'A. Generally the "platform people" (those responsible for the overall car) decide how much power/torque they need and Powertrain people deliver that.

If the Camaro ever gets the SC engine, my bet is the LSA, not the LS9.

^ This

Jul 3, 2013 | 06:48 PM

#26

zeeboid

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waking up this thread, since some of you guys have been at this for a while.

Has anyone upgraded the valvetrain to allow for more RPMs? How did that go, what options have you tried?

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