Gm Hot cam or ASA cam ?
10-14-2009, 03:01 PM
#21
230/230 111 ~ 8* overlap
232/234 112 ~ 9* overlap
228/232 110 ~ 10* overlap
234/242 114 ~ 10* overlap
234/242 112 ~ 14* overlap
Certainly there are benefits to opening up the exhaust in any application where you are running a larger cam. To say that there is 2hp difference between a 204/218 117.5 LSA cam and one that is 226/236 110 LSA seems absurd. With 22 more degrees of intake duration, 35 degrees more overlap and a heavy split towards the exhaust, this cam should pull away from the LS6 cam. Unless the lobes are just to slow to move any air.....
__________________
2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425RWHP/410RWTQ SAE
(400TQ@3500rpm's)
Engine: Terminator Heads, 228/232 110+2 Cam
Bolt-Ons: 1 3/4LT's w/catts, GMMG, Lid, TB
Suspension: Koni's, Hotchkis Springs, 35/21Sways, 17" Chrome ZR'1s
Drivetrain: 3.90 Gears, LS7 Clutch
2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425RWHP/410RWTQ SAE
(400TQ@3500rpm's)
Engine: Terminator Heads, 228/232 110+2 Cam
Bolt-Ons: 1 3/4LT's w/catts, GMMG, Lid, TB
Suspension: Koni's, Hotchkis Springs, 35/21Sways, 17" Chrome ZR'1s
Drivetrain: 3.90 Gears, LS7 Clutch
See above about the slow lobes. You have a long advertised duration and decent duration at .050 lift, but the durations at .200 and .300 where you really start moving some air will be much smaller than an agressive lobe like an XE-R. Even though it's considered a performance cam, there are much better cams out there if you are willing to upgrade all the required parts.
Sorry for the
but sometimes we need to question the things that we read. 
10-14-2009, 03:16 PM
#22
im feelign lazy so im not even gonna read what the others posted.
OP, just going off what you said, id say ASA. if you just stay withh LS6 springs, its the best choice IMO. you might be able to get a custom grind for ls6 springs as well, but this will suffice. you can get a nice little lope and a nice litte power gain.
OP, just going off what you said, id say ASA. if you just stay withh LS6 springs, its the best choice IMO. you might be able to get a custom grind for ls6 springs as well, but this will suffice. you can get a nice little lope and a nice litte power gain.
10-14-2009, 07:13 PM
#23
Banned
iTrader: (3)
Join Date: Jan 2009
Location: Central ,CT
Posts: 859
Likes: 0
Received 0 Likes
on
0 Posts
In my earlier post I told you to run a diffrent cam on the ls6 springs,
But now Im gona tell you what you dont want to hear.
I went with a baby cam (220-224 112), and few weeks later I wish I went bigger.
Sell the springs and stuff you have. LS6 springs realy arent that great, plus yours are used .
Save up any by a set of pat gold springs and retainers for 250$ (cant beat that ) or you can get comp 918s for even less then that (170$).
And you can get a cam in 228 range that will still have very good street maners and make good number + leave room for improment for future mods. .
Realy will only cost you a few bucks more but the reward is much better.
But now Im gona tell you what you dont want to hear.
I went with a baby cam (220-224 112), and few weeks later I wish I went bigger.
Sell the springs and stuff you have. LS6 springs realy arent that great, plus yours are used .
Save up any by a set of pat gold springs and retainers for 250$ (cant beat that ) or you can get comp 918s for even less then that (170$).
And you can get a cam in 228 range that will still have very good street maners and make good number + leave room for improment for future mods. .
Realy will only cost you a few bucks more but the reward is much better.
10-15-2009, 09:20 AM
#24
I read the link too, and I can't say that I give too much credit to the logic here. That cam has 11 degrees overlap when measured in degrees crank rotation, and is comparable to a lot of the cams run on this board.
230/230 111 ~ 8* overlap
232/234 112 ~ 9* overlap
228/232 110 ~ 10* overlap
234/242 114 ~ 10* overlap
234/242 112 ~ 14* overlap
Certainly there are benefits to opening up the exhaust in any application where you are running a larger cam. To say that there is 2hp difference between a 204/218 117.5 LSA cam and one that is 226/236 110 LSA seems absurd. With 22 more degrees of intake duration, 35 degrees more overlap and a heavy split towards the exhaust, this cam should pull away from the LS6 cam. Unless the lobes are just to slow to move any air.....
While your lift may be less than the max spec for these cams, GM uses a much slower acting lobe to retain those springs. You might squeeze by, but you will probably be better off with a stiffer spring as recommended by Comp.
Board member WeathermanShawn has some good results with a similar cam, LT's, cat's and a GMMG. From his signature:
Granted, he does have some heads, but I'm guessing if he put in a stock LS6 cam, he would lose more than 2hp...
See above about the slow lobes. You have a long advertised duration and decent duration at .050 lift, but the durations at .200 and .300 where you really start moving some air will be much smaller than an agressive lobe like an XE-R. Even though it's considered a performance cam, there are much better cams out there if you are willing to upgrade all the required parts.
Sorry for the but sometimes we need to question the things that we read.
230/230 111 ~ 8* overlap
232/234 112 ~ 9* overlap
228/232 110 ~ 10* overlap
234/242 114 ~ 10* overlap
234/242 112 ~ 14* overlap
Certainly there are benefits to opening up the exhaust in any application where you are running a larger cam. To say that there is 2hp difference between a 204/218 117.5 LSA cam and one that is 226/236 110 LSA seems absurd. With 22 more degrees of intake duration, 35 degrees more overlap and a heavy split towards the exhaust, this cam should pull away from the LS6 cam. Unless the lobes are just to slow to move any air.....
While your lift may be less than the max spec for these cams, GM uses a much slower acting lobe to retain those springs. You might squeeze by, but you will probably be better off with a stiffer spring as recommended by Comp.
Board member WeathermanShawn has some good results with a similar cam, LT's, cat's and a GMMG. From his signature:
Granted, he does have some heads, but I'm guessing if he put in a stock LS6 cam, he would lose more than 2hp...
See above about the slow lobes. You have a long advertised duration and decent duration at .050 lift, but the durations at .200 and .300 where you really start moving some air will be much smaller than an agressive lobe like an XE-R. Even though it's considered a performance cam, there are much better cams out there if you are willing to upgrade all the required parts.
Sorry for the
but sometimes we need to question the things that we read.I changed cam and springs to the one listed in my sig, which is very similar in terms of duration, but with more aggressive lobes, less overlap, and higher lift (.080 more).
With no other changes, not even to the tune, the new cam produced 390rwhp on the same dyno. Not to mention my driveability increased greatly.
10-15-2009, 09:13 PM
#25
I understand and agree with what you're saying about the logic. But reality showed me that for my application, that cam did not produce good results. I dynoed twice, on two different dynos, both times under 360rwhp.
I changed cam and springs to the one listed in my sig, which is very similar in terms of duration, but with more aggressive lobes, less overlap, and higher lift (.080 more).
With no other changes, not even to the tune, the new cam produced 390rwhp on the same dyno. Not to mention my driveability increased greatly.
I changed cam and springs to the one listed in my sig, which is very similar in terms of duration, but with more aggressive lobes, less overlap, and higher lift (.080 more).
With no other changes, not even to the tune, the new cam produced 390rwhp on the same dyno. Not to mention my driveability increased greatly.
1) the ASA cam should make some decent gains over an LS6 cam, regardless of the 'mufflers' and exhaust (within reason, assuming LT's are part of the build)
2) while it might gain over the LS6 cam, there are much better cams out there at similar durations that would make much more power.
I believe your results back that statement up fairly well.
After much digging, I might have found the full specs on that cam. Courtesy of http://www.geocities.com/MotorCity/D...00/cmspec.html
LS1 Corvette Hyd. Roller, p/n 12480110
Advertised Duration: 286/300
Duration at .050" lift: 226/236
Valve Lift: .525"/.525"
Lobe Separation Angle: 110
That means that the ASA cam has 73 degrees of overlap at .006" lift. Let's compare that to the same group of cams I listed above, but using their advertised durations (all Comp Lobes, XFI for the first, XE-R for the rest).
280/282 111 ~ 59* overlap
281/283 112 ~ 58* overlap
277/281 110 ~ 59* overlap
283/291 114 ~ 59* overlap
283/291 112 ~ 63* overlap
I searched all over, but I can't come up with a cam doctor for the ASA cam. I think seeing the lifts at .200 would show how much these lobes leave on the table.
10-16-2009, 11:32 AM
#26
Apologies for the confusion, my rather lengthy post was supposed to convey two things:
1) the ASA cam should make some decent gains over an LS6 cam, regardless of the 'mufflers' and exhaust (within reason, assuming LT's are part of the build)
2) while it might gain over the LS6 cam, there are much better cams out there at similar durations that would make much more power.
I believe your results back that statement up fairly well.
1) the ASA cam should make some decent gains over an LS6 cam, regardless of the 'mufflers' and exhaust (within reason, assuming LT's are part of the build)
2) while it might gain over the LS6 cam, there are much better cams out there at similar durations that would make much more power.
I believe your results back that statement up fairly well.
