TSP 231/237 or TR 230/224
10-02-2003, 06:48 PM
#21
D(irecto)r Pepper
Join Date: Nov 2001
Location: Houston Raceway Park...in TEXAS.
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Re: TSP 231/237 or TR 230/224 With out going into it too deeply ...
RPM range is the biggest factor i am referring to; If 6400 can make the power you want but with another cam you have to spin it to 6900 but get 10 more hp... I would go with the first cam and enjoy my motor for the 30,000 or so miles it will last rather than severly shorten it's life by spinning it to 6900 to get the maximum HP out of a LS1.
The LS1 WILL do it... it just wont do it forever.
RPM is what kills these motors... and anything over 6800 is just asking for trouble.
Thats it in a nutshell.
I ran 10.86 with a 222/222 and 10.66 with a 224/224...i DID pick up 2.5 mph going to a larger cam, but the difference in drivability, gas mileage, tuning, RPM levels, etc...., all get harder and harder on you and the motor the bigger you go.
Good luck.
RPM range is the biggest factor i am referring to; If 6400 can make the power you want but with another cam you have to spin it to 6900 but get 10 more hp... I would go with the first cam and enjoy my motor for the 30,000 or so miles it will last rather than severly shorten it's life by spinning it to 6900 to get the maximum HP out of a LS1.
The LS1 WILL do it... it just wont do it forever.
RPM is what kills these motors... and anything over 6800 is just asking for trouble.
Thats it in a nutshell.
I ran 10.86 with a 222/222 and 10.66 with a 224/224...i DID pick up 2.5 mph going to a larger cam, but the difference in drivability, gas mileage, tuning, RPM levels, etc...., all get harder and harder on you and the motor the bigger you go.
Good luck.
10-02-2003, 08:30 PM
#22
Re: TSP 231/237 or TR 230/224
With out going into it too deeply ...
RPM range is the biggest factor i am referring to; If 6400 can make the power you want but with another cam you have to spin it to 6900 but get 10 more hp... I would go with the first cam and enjoy my motor for the 30,000 or so miles it will last rather than severly shorten it's life by spinning it to 6900 to get the maximum HP out of a LS1.
The LS1 WILL do it... it just wont do it forever.
RPM is what kills these motors... and anything over 6800 is just asking for trouble.
Thats it in a nutshell.
I ran 10.86 with a 222/222 and 10.66 with a 224/224...i DID pick up 2.5 mph going to a larger cam, but the difference in drivability, gas mileage, tuning, RPM levels, etc...., all get harder and harder on you and the motor the bigger you go.
Good luck.
RPM range is the biggest factor i am referring to; If 6400 can make the power you want but with another cam you have to spin it to 6900 but get 10 more hp... I would go with the first cam and enjoy my motor for the 30,000 or so miles it will last rather than severly shorten it's life by spinning it to 6900 to get the maximum HP out of a LS1.
The LS1 WILL do it... it just wont do it forever.
RPM is what kills these motors... and anything over 6800 is just asking for trouble.
Thats it in a nutshell.
I ran 10.86 with a 222/222 and 10.66 with a 224/224...i DID pick up 2.5 mph going to a larger cam, but the difference in drivability, gas mileage, tuning, RPM levels, etc...., all get harder and harder on you and the motor the bigger you go.
Good luck.
10-02-2003, 11:30 PM
#23
D(irecto)r Pepper
Join Date: Nov 2001
Location: Houston Raceway Park...in TEXAS.
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Re: TSP 231/237 or TR 230/224 Why did you go to the X1 over the 224/224?
The car had become more of a track car than a work car as it had been in the past.
Also i had gone to bigger LS6 heads and a new rear end with steep gears...i was trying to get all i could out of the short block.
I revved it to the moon (7000) and yes the motor made more HP up top,...there are ALWAYS compromises though. Nothing is free as far as HP goes.
Bigger (more duration) the cam? the RPM range will move upwards as well. This can be modified somewhat by changing the L/S and other timing factors...somewhat.
But bigger means moving the RPM range up.
Yes i picked up HP from going to bigger and bigger cams.. yes i had to rev it higher and higher to take advantage of that accessable new hp that was available and yes it will shorten the life of your motor the higher you spin it.
Dont ever let anyone tell you different.
The higher you spin it... the shorter amount of time it will live.
Anything over say 6800 is just asking for trouble on a stock short block.
Some do live higher than that... most dont, not for very many miles anyways.
Good luck and remember. There are a lot of guys with some small to medium sized cams that are kicking the Holy crap out of mega cammed LS1's.
Adios Amigos.
The car had become more of a track car than a work car as it had been in the past.
Also i had gone to bigger LS6 heads and a new rear end with steep gears...i was trying to get all i could out of the short block.
I revved it to the moon (7000) and yes the motor made more HP up top,...there are ALWAYS compromises though. Nothing is free as far as HP goes.
Bigger (more duration) the cam? the RPM range will move upwards as well. This can be modified somewhat by changing the L/S and other timing factors...somewhat.
But bigger means moving the RPM range up.
Yes i picked up HP from going to bigger and bigger cams.. yes i had to rev it higher and higher to take advantage of that accessable new hp that was available and yes it will shorten the life of your motor the higher you spin it.
Dont ever let anyone tell you different.
The higher you spin it... the shorter amount of time it will live.
Anything over say 6800 is just asking for trouble on a stock short block.
Some do live higher than that... most dont, not for very many miles anyways.
Good luck and remember. There are a lot of guys with some small to medium sized cams that are kicking the Holy crap out of mega cammed LS1's.
Adios Amigos.
