242/242 .624/.624 on a 115 or 242/240 for Rearmount
08-27-2009, 06:15 PM
#1
242/242 .624/.624 on a 115 or 242/240 for Rearmount I called Comp Cams and I can have my current brand new in box 242/248 .624/.624 on a 115 lobe sep LSL lobed cam reground for $125. They suggested either going straight pattern 242/242 or taking the exhaust to 240. I will be using a T78/GTM78 from Turbonetics or an ST80 from Borg Warner. Build specs in sig.
08-27-2009, 10:46 PM
#7
Here are some of the LSL lobes specs.
13016R 273 223 147 .359” .610”
13017R 277 227 151 .361” .614”
13018R 281 231 154 .363” .617”
13019R 285 235 158 .365” .621”
13020R 289 239 162 .367” .624”
13021R 293 243 166 .367” .624”
13022R 297 247 169 .367” .624”
What to do? 243/239, 239/235, 235/231, 231/227
13016R 273 223 147 .359” .610”
13017R 277 227 151 .361” .614”
13018R 281 231 154 .363” .617”
13019R 285 235 158 .365” .621”
13020R 289 239 162 .367” .624”
13021R 293 243 166 .367” .624”
13022R 297 247 169 .367” .624”
What to do? 243/239, 239/235, 235/231, 231/227
Trending Topics
08-29-2009, 03:00 PM
#12
I thought traditional splits dyno'd better and reverse splits went faster? Doesn't matter now anyways. My builder talked me into keeping my current cam and sticking with twin front mount T70's.
Last edited by TurboAv; 08-29-2009 at 05:20 PM.
08-29-2009, 05:13 PM
#17
FormerVendor
iTrader: (3)
Join Date: Jun 2007
Location: Virginia Beach,Virginia
Posts: 2,991
Likes: 0
Received 2 Likes
on
2 Posts
once again it's not about hp,it's about what cam works the best,the cam that makes the most hp is not usually the cam that make the best et at the drag strip or the best lap times at the track.you always talk about dyno hp-who cares,we don't race dynos.Reverse split cams will ALWAYS make better overall power.
And just so you know-the fastest single turbo drag radial car in the world-has a reverse split cam
And just so you know-the fastest single turbo drag radial car in the world-has a reverse split cam
08-29-2009, 08:26 PM
#18
once again it's not about hp,it's about what cam works the best,the cam that makes the most hp is not usually the cam that make the best et at the drag strip or the best lap times at the track.you always talk about dyno hp-who cares,we don't race dynos.Reverse split cams will ALWAYS make better overall power.
There's a difference between going fast because of a part, versus going fast in spite of a part. Example: There are 4-bangers faster than my car, so does that I should switch?
08-29-2009, 09:34 PM
#19
TECH Fanatic
iTrader: (4)
Join Date: Mar 2004
Location: San Antonio
Posts: 1,886
Likes: 0
Received 0 Likes
on
0 Posts
Too many weak points with the system IMO.
-charge pipe length is crazy long
-oil lines everywhere
-lag (depending on auto or stick)
-intake in terrible place
-ground clearance
ran mine for almost 3 years... I can't wait to get my front mount installed, it'll spool MUCH faster and have less of everything to deal with
again, this is all my opinion
-charge pipe length is crazy long
-oil lines everywhere
-lag (depending on auto or stick)
-intake in terrible place
-ground clearance
ran mine for almost 3 years... I can't wait to get my front mount installed, it'll spool MUCH faster and have less of everything to deal with
again, this is all my opinion
08-30-2009, 10:05 AM
#20
FormerVendor
iTrader: (3)
Join Date: Jun 2007
Location: Virginia Beach,Virginia
Posts: 2,991
Likes: 0
Received 2 Likes
on
2 Posts
Show me some data, or at least a theory, that says the reverse split spools a turbo faster or makes more power under the curve. I've tried a single-pattern and lost enough power, with no noticeable gain in spool time, that I switched back to a conventional split.
There's a difference between going fast because of a part, versus going fast in spite of a part. Example: There are 4-bangers faster than my car, so does that I should switch?
There's a difference between going fast because of a part, versus going fast in spite of a part. Example: There are 4-bangers faster than my car, so does that I should switch?
here's my data-tryed no less than 10 different camshafts in my own turbo car.i have no dyno data because my dyno only goes to 1200 rwhp,but i do have plenty of track data.
the reverse split cam would aways work better at the track than the std split or even the single pattern cam-the reverse split cam would spool faster and run better down low than the other cams with only a marginal loss in mph.The gain in et was substantial with the reverse splits.All the cams we tryed at different intake centerlines which was easy to do at the track with the belt drive.
in all the of turbo race cars that have my motors in,the converter manf can't believe we can even spool with the converters we are running-tell us they are big inch n2o converters only and nobody else can make them work-this from both Marty at Chance converters and Chris from ATI.
you are correct-you can go fast in spite of a part-and in fact we could go more mph with a trad split cam-but drag races aren't won with mph-they are won with et.