Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

SCR, DCR, flycutting???

Thread Tools
 
Search this Thread
 
Old 03-16-2008, 01:35 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (71)
 
MrElectric03's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 1,885
Likes: 0
Received 1 Like on 1 Post

Default SCR, DCR, flycutting???

I have input all of my info for my upcoming head and cam swap into the DCR/SCR calculator. How does this look and have I missed anything?

Measurements are using PRC stg 2.5 5.3l heads w/ 62cc chambers with a TSP 228R 228/228 .588/.588 112+2 on stock ls1 shortblock.

@0.050
Int Dur:228
Exh Dur:228
LSA:112
ICL:108

IVO:6
IVC:42
EVO:50
EVC:-2
ECL:116
Overlap:4

Bore:3.9
Stroke:3.622
Rod Length:6.098
Cylinders:8
Deck Height:-0.006???I read at one point that it is +.005 stock??
Piston dome:0
Comp head gask thick:0.045
Cyl Head volume:62cc

[B]Static Compression Ratio=11.18:1
Dynamic Compression Ratio=8.55:1
Rod to stroke length=1.68:1
Bore to stroke length=1.08:1[B]

With this setup will I need to flycut the pistons?Is my DCR ok for 91 octane(California) pump gas?Is that deck height correct?

I really appreciate the help...my first Head and cam swap and im trying to get it right the first time...Thanks again!
Old 03-16-2008, 07:53 PM
  #2  
TECH Fanatic
Thread Starter
iTrader: (71)
 
MrElectric03's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 1,885
Likes: 0
Received 1 Like on 1 Post

Default

PredatorZ...PatrickG...the two of you are the help I would appreciate the most.

Help is greatly appreciated!
Old 03-17-2008, 06:28 PM
  #3  
TECH Fanatic
Thread Starter
iTrader: (71)
 
MrElectric03's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 1,885
Likes: 0
Received 1 Like on 1 Post

Default

bump...
Old 03-17-2008, 07:37 PM
  #4  
TECH Senior Member
iTrader: (8)
 
SOMbitch's Avatar
 
Join Date: Sep 2007
Posts: 6,881
Likes: 0
Received 3 Likes on 3 Posts
Default

PTV will be fine and I would go ahead and run .040 cometic.
Old 03-18-2008, 06:29 PM
  #5  
TECH Fanatic
Thread Starter
iTrader: (71)
 
MrElectric03's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 1,885
Likes: 0
Received 1 Like on 1 Post

Default

With a .040 Cometic the DCR was too high...8.6 and lower is reccomended for 93 octane and Im in california and only have 91!...witht the .040 the DCR was just way too high. Thanks for the advice!I really appreciate it!
Old 03-18-2008, 07:37 PM
  #6  
TECH Senior Member
iTrader: (8)
 
SOMbitch's Avatar
 
Join Date: Sep 2007
Posts: 6,881
Likes: 0
Received 3 Likes on 3 Posts
Default

8.6 is perfect! We just have a diifference of opinion. I am gonna shoot for 8.8 when I do my H/C swap next month. Good luck!!!!!
Old 03-18-2008, 11:57 PM
  #7  
TECH Regular
iTrader: (24)
 
tatasta's Avatar
 
Join Date: Jan 2007
Location: Nevada
Posts: 447
Likes: 0
Received 0 Likes on 0 Posts

Default

SOMbitch, you got a nice ***!!
Old 03-19-2008, 11:59 PM
  #8  
TECH Fanatic
Thread Starter
iTrader: (71)
 
MrElectric03's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 1,885
Likes: 0
Received 1 Like on 1 Post

Default

Well if 8.6 is okay I will run that...I have just been told otherwise.Thanks for your help!
Old 03-19-2008, 11:59 PM
  #9  
TECH Fanatic
Thread Starter
iTrader: (71)
 
MrElectric03's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 1,885
Likes: 0
Received 1 Like on 1 Post

Default

Originally Posted by tatasta
SOMbitch, you got a nice ***!!
How does that help my DCR?...haha j/k




All times are GMT -5. The time now is 11:49 AM.