Self-Speced Cam- What you Think?
02-15-2009, 08:45 AM
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Self-Speced Cam- What you Think? just fooling around with numbers and speced this cam out...
intake- LSK lobe 227dur .639 lift
exhaust- LSK lobe 229dur .631 lift
ICL- 110
LSA- 114
I believe this cam will peak around 6500rpm
I believe PRC .660rated springs would be highly recommended
I believe DD and idle should be very tame due to 0* of overlap
I believe fly cutting wont be required with PRC 2.5 5.3 heads (due to recessed valves)
Id love to hear Pat G and Predator Z's thoughts on this!!!
intake- LSK lobe 227dur .639 lift
exhaust- LSK lobe 229dur .631 lift
ICL- 110
LSA- 114
I believe this cam will peak around 6500rpm
I believe PRC .660rated springs would be highly recommended
I believe DD and idle should be very tame due to 0* of overlap
I believe fly cutting wont be required with PRC 2.5 5.3 heads (due to recessed valves)
Id love to hear Pat G and Predator Z's thoughts on this!!!
02-15-2009, 08:50 AM
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Based lobes off of:
.006...050...200...Lobe Lift
277...227...153......0.376
276...229...157......0.371
Based off that i got ramp rates (.006-.050) of 50 and 47 and (.050-.200) of 74 and 72
.006...050...200...Lobe Lift
277...227...153......0.376
276...229...157......0.371
Based off that i got ramp rates (.006-.050) of 50 and 47 and (.050-.200) of 74 and 72
02-15-2009, 09:53 AM
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just compared some other LSK/ LSK cams... pat G speced- 224/228 .637/.639 110LSA
2500...150/320
3000...200/350
3500...247/370
4000...290/382
4500...345/402
4800...375/410
5000...387/406
5500...428/409
6000...452/396
6300...459/383
6500...459/371
7000...446/335
i think with PRC 2.5 5.3 the numbers shouldnt be far off from what i specd prob 440/415
- also noticed TR xTReme cam uses the 227 lobe on both int and exh... cant find a dyno for that cam though
2500...150/320
3000...200/350
3500...247/370
4000...290/382
4500...345/402
4800...375/410
5000...387/406
5500...428/409
6000...452/396
6300...459/383
6500...459/371
7000...446/335
i think with PRC 2.5 5.3 the numbers shouldnt be far off from what i specd prob 440/415
- also noticed TR xTReme cam uses the 227 lobe on both int and exh... cant find a dyno for that cam though