Cam selection?
10-14-2004, 10:20 PM
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Originally Posted by Silver2004
marc_w
I read your posts about losing some lower rpm TQ and that you fixed it with changing converter lock up. I'm I little concerned how the lower compression 5.3 will react vs your higher compression 6.0.
NA
I would like to plug that cam into the desktop dyno. Do You know the ICL? and does the +4 refer to 4 degree advance?
budhayes3
I'm glad to hear that cam is torquey. I think it's one of the few grinds aimed mostly at trucks.
I have noticed that Comp cams seem to show less advertised duration than Crane while having the same duration at .050. I guess they are a more agressive profile and might have a little less overlap, for less lowend TQ loss(?). I'm just suprised that they don't offer anything inbetween 206/214 and 212/218.
I read your posts about losing some lower rpm TQ and that you fixed it with changing converter lock up. I'm I little concerned how the lower compression 5.3 will react vs your higher compression 6.0.
NA
I would like to plug that cam into the desktop dyno. Do You know the ICL? and does the +4 refer to 4 degree advance?
budhayes3
I'm glad to hear that cam is torquey. I think it's one of the few grinds aimed mostly at trucks.
I have noticed that Comp cams seem to show less advertised duration than Crane while having the same duration at .050. I guess they are a more agressive profile and might have a little less overlap, for less lowend TQ loss(?). I'm just suprised that they don't offer anything inbetween 206/214 and 212/218.
valve events @ .050
IO -5.0* ATDC
IC 35.0* ABDC
EO 43.0* BBDC
EC -5.0* BTDC
intake dur @ .004 272*
exhaust dur @ .004 280*
intake dur @ .050 210*
exhaust dur @ .050 218*
intake centerline 110*
exhaust centerline 114*
valve events @ .004
IO 22.0* BTDC
IC 70.0* ABDC
EO 70.0* BBDC
EC 30.0* ATDC
10-23-2004, 12:14 AM
#13
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Has anyone looked into crower cams. I noticed a crower 208/216 .514/.514 114LSA cam. Comparing advertised duration vs .050 duration leads me to believe it has agressive, fast opening lobes.
For comparison:
.050 adv lift
crower 208/216=258/262 .514/.514
crane 208/216=276/274 .530/.530
comp 206/212=259/265 .515/.522
comp 208/214=261/267 .554/.559
No 216 is listed by comp
For comparison:
.050 adv lift
crower 208/216=258/262 .514/.514
crane 208/216=276/274 .530/.530
comp 206/212=259/265 .515/.522
comp 208/214=261/267 .554/.559
No 216 is listed by comp
10-24-2004, 03:41 PM
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Crower doesn't list many LS1 cams, but I kind of like that one. For some reason they don't show it's valve events or centerlines. I've e-mailed them for more specs and the possibility of custom grinding one on a 112 LSA.
Lunati used to list a 208/216 .525/.525 113 LSA that looked like a good truck cam, but now they don't seem to know anything about it. I e-mailed them and they denied making that grind. Now the smallest cam they list is 212/216, more than I'm looking for.
Lunati used to list a 208/216 .525/.525 113 LSA that looked like a good truck cam, but now they don't seem to know anything about it. I e-mailed them and they denied making that grind. Now the smallest cam they list is 212/216, more than I'm looking for.
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