BlackVert 15 Year Member Oct 3, 2003 5,589 9 98 Bethesda, MD Jan 24, 2008 #1 Jan 24, 2008 #1 anyone know what the stock cam specs are on our cars? what i'm looking for most is lsa, duration at .050, total duration, and what the intake lobe is degreed to. thanks :SNSign:
anyone know what the stock cam specs are on our cars? what i'm looking for most is lsa, duration at .050, total duration, and what the intake lobe is degreed to. thanks :SNSign:
5spd GT "the 5.0 owns all" Founding Member Aug 7, 2002 9,516 6 99 Arkansas Jan 24, 2008 #2 Jan 24, 2008 #2 Here is some of the info I have... Stock 87-93 Cam Information: Lift is .444*/.444* - Advertised @ 266*/266* until August of '88, then it went to 276*/266* . Duration at .050" varies and ranges from 204*+/204*+ 85-88: Lift: .278 intake, .278 exhaust Duration: 266 intake 266 exhaust Overlap: 36 degrees, 9.04 factor Lobe Center: 115 intake, 115 exhaust 89-90: Lift: .278 intake, .278 exhaust Duration: 276 intake, 266 exhaust Overlap: 39 degrees, 19.51 factor Lobe Center: 116 intake, 115 exhaust 91-95: Lift: .278 intake, .278 exhaust Duration: 276 intake, 266 exhaust Overlap: 39 degrees, 19.51 factor Lobe Center: 116 intake, 115 exhaust 93-95 Cobra: Lift: .282 intake, .282 exhaust Duration: 270 intake, 270 exhaust Overlap: 33.5 degrees, 15.24 factor Lobe Center: 115 intake, 121.5 exhaust 1985-08/1988 I.O. 17 BTDC / I.C. 69 ABDC E.O. 67 BBDC / E.C. 19 ATDC 08/1988 - 1993 I.O. 20 BTDC / I.C. 76 ABDC E.O. 67 BBDC / E.C. 19 ATDC There is more in my signature...
Here is some of the info I have... Stock 87-93 Cam Information: Lift is .444*/.444* - Advertised @ 266*/266* until August of '88, then it went to 276*/266* . Duration at .050" varies and ranges from 204*+/204*+ 85-88: Lift: .278 intake, .278 exhaust Duration: 266 intake 266 exhaust Overlap: 36 degrees, 9.04 factor Lobe Center: 115 intake, 115 exhaust 89-90: Lift: .278 intake, .278 exhaust Duration: 276 intake, 266 exhaust Overlap: 39 degrees, 19.51 factor Lobe Center: 116 intake, 115 exhaust 91-95: Lift: .278 intake, .278 exhaust Duration: 276 intake, 266 exhaust Overlap: 39 degrees, 19.51 factor Lobe Center: 116 intake, 115 exhaust 93-95 Cobra: Lift: .282 intake, .282 exhaust Duration: 270 intake, 270 exhaust Overlap: 33.5 degrees, 15.24 factor Lobe Center: 115 intake, 121.5 exhaust 1985-08/1988 I.O. 17 BTDC / I.C. 69 ABDC E.O. 67 BBDC / E.C. 19 ATDC 08/1988 - 1993 I.O. 20 BTDC / I.C. 76 ABDC E.O. 67 BBDC / E.C. 19 ATDC There is more in my signature...
BlackVert 15 Year Member Oct 3, 2003 5,589 9 98 Bethesda, MD Jan 25, 2008 #3 Jan 25, 2008 #3 wow ... but i have a question or 2 ... 91-95: Lift: .278 intake, .278 exhaust Duration: 276 intake, 266 exhaust Overlap: 39 degrees, 19.51 factor Lobe Center: 116 intake, 115 exhaust 5spd GT said: 91-95: Lift: .278 intake, .278 exhaust Duration: 276 intake, 266 exhaust Overlap: 39 degrees, 19.51 factor Lobe Center: 116 intake, 115 exhaust Click to expand... is the 115 exhaust lobe center actually the lobe seperation angle, or is it 115 degrees before TDC? i assume the 276 is the full duration, not the duration at .050? what does the "19.51 factor" mean?
wow ... but i have a question or 2 ... 91-95: Lift: .278 intake, .278 exhaust Duration: 276 intake, 266 exhaust Overlap: 39 degrees, 19.51 factor Lobe Center: 116 intake, 115 exhaust 5spd GT said: 91-95: Lift: .278 intake, .278 exhaust Duration: 276 intake, 266 exhaust Overlap: 39 degrees, 19.51 factor Lobe Center: 116 intake, 115 exhaust Click to expand... is the 115 exhaust lobe center actually the lobe seperation angle, or is it 115 degrees before TDC? i assume the 276 is the full duration, not the duration at .050? what does the "19.51 factor" mean?