LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What is my CR?

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Old Oct 24, 2005 | 10:21 PM
  #16  
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Re: What is my CR?

Originally Posted by 96ta(nick)
So are you saying it will make better power with a higher dynamic ratio? It already made 415 with a mail order tune.. how much power difference would that be roughly? Not really into the idea of tearing it apart again for a minimal gain.


I believe ya will see more than minimal gain(ie 10/15HP)
Ya could run that thing on 86 octane as it is now.
Old Oct 24, 2005 | 10:25 PM
  #17  
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Re: What is my CR?

Would a cam swap have the same effect? Do you think a smaller cam would make more power?
Old Oct 24, 2005 | 10:33 PM
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Re: What is my CR?

1racer- is there a link to the calculator you use to get DCR?
Old Oct 24, 2005 | 10:41 PM
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Re: What is my CR?

Originally Posted by SWINGRRR
1racer- is there a link to the calculator you use to get DCR?
Ya can buy it from Performance Trends.
Old Oct 24, 2005 | 10:49 PM
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Re: What is my CR?

Originally Posted by 96ta(nick)
Would a cam swap have the same effect? Do you think a smaller cam would make more power?
Raising the compression or a smaller cam will help everything,especially the torque. I imagine your dyno sheet shows it to be low on torque.To small will kill ya. Ya need to get the IC back away from the 84* closing point. Hell my 260'ish on a 108* mechanical roller in my shop car has an earlier IVC than yours. When I saw the 84* I like to have fallen out of the chair.
Old Oct 24, 2005 | 11:01 PM
  #21  
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Re: What is my CR?

It is low on torque.. Well maybe i should get with someone about a custom cam. If i can make it up with a smaller cam that would be great.
Old Oct 24, 2005 | 11:10 PM
  #22  
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Re: What is my CR?

Originally Posted by 96ta(nick)
It is low on torque.. Well maybe i should get with someone about a custom cam. If i can make it up with a smaller cam that would be great.
Get the spects on a recommended cam and figure out your DCR. The closer to 9.0 ya stay the better it will run. Ya will need a new tune also.
Old Oct 25, 2005 | 04:00 PM
  #23  
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Re: What is my CR?

hell with your current setup nick wonder what the 847 comes out as
Old Oct 25, 2005 | 04:02 PM
  #24  
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Re: What is my CR?

Originally Posted by Z284thgen
hell with your current setup nick wonder what the 847 comes out as
I think i am going to get with Joe or Brett and get a custom cam.
Old Oct 25, 2005 | 04:11 PM
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Re: What is my CR?

Originally Posted by 96ta(nick)
I think i am going to get with Joe or Brett and get a custom cam.
i was wondering since this guy has the calc to do it just how much difference there is the two cams......

you know me and cams the car will be on complete new cam number 3 before the winter is over...i just cant make my mind up with what i want
Old Oct 25, 2005 | 04:45 PM
  #26  
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Re: What is my CR?

Originally Posted by Z284thgen
i was wondering since this guy has the calc to do it just how much difference there is the two cams......

you know me and cams the car will be on complete new cam number 3 before the winter is over...i just cant make my mind up with what i want
If ya PM me all the engine spects,head flow,valve size,port runner size(H/W),what intake,and all the rest that isn't posted,I will run it on my program's and get ya real close to what ya need. It will take me a day or two to run all the scenario's, but ya will know.
Old Oct 26, 2005 | 10:37 PM
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Re: What is my CR?

Originally Posted by 1racerdude
If ya PM me all the engine spects,head flow,valve size,port runner size(H/W),what intake,and all the rest that isn't posted,I will run it on my program's and get ya real close to what ya need. It will take me a day or two to run all the scenario's, but ya will know.
i was talking about his combo he used to have a 847 in it before the motor let go so i dont know the full on cam specs
Old Oct 26, 2005 | 10:43 PM
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Re: What is my CR?

Originally Posted by Z284thgen
i was talking about his combo he used to have a 847 in it before the motor let go so i dont know the full on cam specs
He sent some info. Waiting on some sizes now.
Old Oct 26, 2005 | 10:44 PM
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Re: What is my CR?

Originally Posted by Z284thgen
i was talking about his combo he used to have a 847 in it before the motor let go so i dont know the full on cam specs
He was going to see if he could get me specs to match my setup, that is why he needed the info. I wish i had spun a rod bearing or something besides the cam bearing because i had to trash that 500mile brand new 847.




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