Best way to support 8-8500rpm
02-25-2005, 11:58 PM
#3
10 Second Club
The PCM’s data tables end at 8000 RPM so you would need to divide the crankshaft position signal by 2 and convert the engine to two-stroke operation. Admitedly that would be a lot of effort and expense but it should get you to 16000 RPM.
Last edited by Gary Z; 02-26-2005 at 12:12 AM.
02-26-2005, 01:07 AM
#4
TECH Senior Member
may be time for an aftermarket ECU? w/out modifying the PCM OS I don't know that a stocker could handle that high of RPM... possibly email HP Tuners as they've had luck modifying the stock PCM OS
Last edited by horist; 02-26-2005 at 01:30 AM.
03-02-2005, 09:41 PM
#5
I thought it ended at 7200rpm. If it goes to 8000 rpm that would do.
Stock pieces aren't good for 8000. However a 4340 crank, high end billet rods (Crower, Dyers, Carillo, Pauter), and high end pistons (CP, JE, Wiesco) could handle it.
The valve train also needs to be reworked.
8000 over 7000 is like adding 50 cubes.
David
Stock pieces aren't good for 8000. However a 4340 crank, high end billet rods (Crower, Dyers, Carillo, Pauter), and high end pistons (CP, JE, Wiesco) could handle it.
The valve train also needs to be reworked.
8000 over 7000 is like adding 50 cubes.
David
03-02-2005, 09:53 PM
#6
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Originally Posted by DavidNJ
I thought it ended at 7200rpm. If it goes to 8000 rpm that would do.
Stock pieces aren't good for 8000. However a 4340 crank, high end billet rods (Crower, Dyers, Carillo, Pauter), and high end pistons (CP, JE, Wiesco) could handle it.
The valve train also needs to be reworked.
8000 over 7000 is like adding 50 cubes.
David
Stock pieces aren't good for 8000. However a 4340 crank, high end billet rods (Crower, Dyers, Carillo, Pauter), and high end pistons (CP, JE, Wiesco) could handle it.
The valve train also needs to be reworked.
8000 over 7000 is like adding 50 cubes.
David
Thats true but reliabilty goes WAY down.
03-03-2005, 10:53 PM
#7
With the right parts reliability is fairly comparable. Depends on tune. The lighter the reciprocating assembly, the violent the lobe ramp, the less reliable the pieces. It is a trade-off. A trade-off made for endurance racing and long distance stock car racing all the time. It is the street (only occasionally stressed) and short track oval (short races) that have the harder trade-off.
Oh, I guess that is us!
Oh, I guess that is us!
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03-03-2005, 11:15 PM
#8
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Youre gonna have to have a solid roller setup too.
why spin that high? that's the beauty of the larger cubes that we have, we don't have to spin to the moon to make power like some.
why spin that high? that's the beauty of the larger cubes that we have, we don't have to spin to the moon to make power like some.
