Its cam time
11-01-2011, 05:51 PM
#1
Staging Lane
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Its cam time SO IVE RECENTLY STARTED LOOKING FOR CAMS FOR MY 99 WS6 "LS1". JUST LOOKING TO SEE IF ANYBODY HAS ANY GOOD REFERANCES ON CAMS. I WANT A NIcE AGGRESSIVE CAM THATS GONNA GIVE ME GREAT TOP ENDPOWER AND A REAL NICE SOUND.
ONE OTHER THING I WAS LOOKING INTO WAS THE "LSA" NUMBER ON THE CAMS... IVE RESEARCHED AND NOTICED THAT THE STOCK CAM I HAVE HAS A 116LSA. IVE BEEN TOLD THAT THE BEST FOR THE LS1 IS 112LSA. IS THIS TRUE AND WHAT DOES THIS LSA NUMBER REPRESENT?
STOCK CAM : 202/210 int/exh @ 0.05" duration
0.496" / 0.496" int/exh lift
116 LSA
CAM I HAVE IN MIND "SO FAR" : 243/251 int/exh Lift Int. .624 Exh. .624 LSA 114° BY COMP CAMS
ONE OTHER THING I WAS LOOKING INTO WAS THE "LSA" NUMBER ON THE CAMS... IVE RESEARCHED AND NOTICED THAT THE STOCK CAM I HAVE HAS A 116LSA. IVE BEEN TOLD THAT THE BEST FOR THE LS1 IS 112LSA. IS THIS TRUE AND WHAT DOES THIS LSA NUMBER REPRESENT?
STOCK CAM : 202/210 int/exh @ 0.05" duration
0.496" / 0.496" int/exh lift
116 LSA
CAM I HAVE IN MIND "SO FAR" : 243/251 int/exh Lift Int. .624 Exh. .624 LSA 114° BY COMP CAMS
11-01-2011, 06:15 PM
#2
On The Tree
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rear,read,and read more on cam set-ups.There is no way that cam is going to work in what you have. Looks like in your sig you have a cat-back and lid,id start with long tubes and ory,because your going to need it to get any real power anyways.
But for your stock cube engine a 224r cam would be nice with your rear gear,sure you could go 228r or 230ish but without heads your spinning your wheels,so with stock heads id go with a 224r or 224/228 on a 112
But for your stock cube engine a 224r cam would be nice with your rear gear,sure you could go 228r or 230ish but without heads your spinning your wheels,so with stock heads id go with a 224r or 224/228 on a 112
11-02-2011, 07:11 PM
#5
Yeah your can choice will never work in a ls1. Finish your bolt ons ,after that talk with pat g at eps, sounds like you have alot to learn,i would for sure research as much as you can.you only wanna do things once, so many new guys think a big bad cam will make there car fast, it takes alot more than that,
11-02-2011, 07:33 PM
#6
I thought the "EGR" cams 98-00 were 199/210 @ .050" and LSA 119.5. Not that it matters much.
To expound on the above... you are talking about lobe 13021R for the intake, 13023R for exhaust (LSLs...) right?
Putting those into a DCR spreadsheet gives interesting results. So 114LSA with 110 ICL gives you 7.6:1 DCR with 243 heads... because I am lazy and that is what I already had in that part. It will slightly change with 347cu i and depending on what heads you use. As a comparison, a 224R-112 would be 8.45 in the same setup.
For 0.050" >> 0.006"
IVO 11.5* >> 36.5* BTDC
IVC 51.5* >> 76.5* ABDC
EVO 63.5* >> 88.5* BBDC
EVC 7.5* >> 32.5* ATDC
Overlap is a mere 19* at 0.050...
To expound on the above... you are talking about lobe 13021R for the intake, 13023R for exhaust (LSLs...) right?
Putting those into a DCR spreadsheet gives interesting results. So 114LSA with 110 ICL gives you 7.6:1 DCR with 243 heads... because I am lazy and that is what I already had in that part. It will slightly change with 347cu i and depending on what heads you use. As a comparison, a 224R-112 would be 8.45 in the same setup.
For 0.050" >> 0.006"
IVO 11.5* >> 36.5* BTDC
IVC 51.5* >> 76.5* ABDC
EVO 63.5* >> 88.5* BBDC
EVC 7.5* >> 32.5* ATDC
Overlap is a mere 19* at 0.050...
Last edited by HAZ-Matt; 11-02-2011 at 08:01 PM.
