Finding LSA on Crane cam???
09-04-2005, 11:19 PM
#1
Finding LSA on Crane cam??? I've got a custom grind crane cam that came in a motor I bought. I have the cam card for it, but I can't find the LSA or ICL anywhere on the card or cam. Here is what I have on the card:
Part# 144HR00039
Grind# HR-250/372-2S-12
cam timing @ .050
IVO 18* btdc / IVC 52* abdc / max lift 107 atdc / duration 250*
EVO 70* bbdc / EVC 16* atdc / max lift 117 btdc/ duration 266*
I was gunna put it up for sale, but with no specs, it'll never go. Any speacial way to determine LSA and ICL?
Part# 144HR00039
Grind# HR-250/372-2S-12
cam timing @ .050
IVO 18* btdc / IVC 52* abdc / max lift 107 atdc / duration 250*
EVO 70* bbdc / EVC 16* atdc / max lift 117 btdc/ duration 266*
I was gunna put it up for sale, but with no specs, it'll never go. Any speacial way to determine LSA and ICL?
09-05-2005, 12:18 AM
#2
TECH Senior Member
Part Number: 144HR00039 Grind Number: HR-250/372-2S-12
Engine Identification:
Start Yr. End Yr. Make Cyl Description
1997 Up CHEVROLET 8 Custom ground per application.
Engine Size Configuration
5.7 L V
Valve Setting: Intake .000 Exhaust .000 HOT
Lift: Intake @Cam 372 @Valve 632 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 372 @Valve 632
Rocker Arm Ratio 1.70
Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 45.0 BTDC 87.0 ABDC 312.0 °
Exhaust 97.0 BBDC 51.0 ATDC 328.0 °
Spring Requirements: Triple Dual Outer Inner
Part Number 144832
Loads Closed 112 LBS @ 1.800 or 1 51/64
Open 326 LBS @ 1.210
Recommended RPM range with matching components
Minimum RPM 3700
Maximum RPM 6800
Valve Float 7000
Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake 18.0 BTDC 52.0 ABDC 107 250.0 °
Exhaust 70.0 BBDC 16.0 ATDC 117 266.0 °
Remarks:
FIRING ORDER: 1-8-7-2-6-5-4-3
http://www.cranecams.com/?show=brows...39&lvl=2&prt=5
Engine Identification:
Start Yr. End Yr. Make Cyl Description
1997 Up CHEVROLET 8 Custom ground per application.
Engine Size Configuration
5.7 L V
Valve Setting: Intake .000 Exhaust .000 HOT
Lift: Intake @Cam 372 @Valve 632 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 372 @Valve 632
Rocker Arm Ratio 1.70
Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 45.0 BTDC 87.0 ABDC 312.0 °
Exhaust 97.0 BBDC 51.0 ATDC 328.0 °
Spring Requirements: Triple Dual Outer Inner
Part Number 144832
Loads Closed 112 LBS @ 1.800 or 1 51/64
Open 326 LBS @ 1.210
Recommended RPM range with matching components
Minimum RPM 3700
Maximum RPM 6800
Valve Float 7000
Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake 18.0 BTDC 52.0 ABDC 107 250.0 °
Exhaust 70.0 BBDC 16.0 ATDC 117 266.0 °
Remarks:
FIRING ORDER: 1-8-7-2-6-5-4-3
http://www.cranecams.com/?show=brows...39&lvl=2&prt=5
09-05-2005, 01:00 AM
#4
TECH Apprentice
Join Date: Sep 2005
Posts: 334
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Originally Posted by Beast96Z
I've got a custom grind crane cam that came in a motor I bought. I have the cam card for it, but I can't find the LSA or ICL anywhere on the card or cam. Here is what I have on the card:
Part# 144HR00039
Grind# HR-250/372-2S-12
cam timing @ .050
IVO 18* btdc / IVC 52* abdc / max lift 107 atdc / duration 250*
EVO 70* bbdc / EVC 16* atdc / max lift 117 btdc/ duration 266*
I was gunna put it up for sale, but with no specs, it'll never go. Any speacial way to determine LSA and ICL?
Part# 144HR00039
Grind# HR-250/372-2S-12
cam timing @ .050
IVO 18* btdc / IVC 52* abdc / max lift 107 atdc / duration 250*
EVO 70* bbdc / EVC 16* atdc / max lift 117 btdc/ duration 266*
I was gunna put it up for sale, but with no specs, it'll never go. Any speacial way to determine LSA and ICL?
Your cam is ground with 5* advance
ICL = 107*
ECL = 117*
