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Ok you LS1 owners I need some information from all of you! Well just to let you guys know I have a L98 based motor, and yes the means I am a third gen guy, so I am not very familiar with the LS1. Any ways the cam (after market cams) that I have and the cam for the LS1 are similar to mine but the operating range for the LS1 covers a broader rpm band. Here take a look:
My Cam (XR276HR) Comp Cams
Operating range: 1800 ? 5800
Advertised Duration: 276 in / 281 ex
Duration @ .05: 224 in / 230 ex
Lift with 1.5: .503 in / .510 ex (I?m not sure exactly what lift it would be with 1:6 rockers)
LSA: 112
LS1 Cam (XR269HR) Comp Cams
Operating range: 1300 - 6300
Advertised Duration: 269 in / 273 ex
Duration @ .05: 216 in / 220 ex
Lift with 1.7 rockers: .525 in / .532 ex
LSA: 114
One More LS1 cam(XR273HR) Comp Cam
Operating range: 1600-6600
Advertised Duration: 273 in / 277 ex
Duration @ .05: 220 in / 224 ex
Lift w/ 1:7 rockers: .530 in / .534 ex
LSA: 112
My question to you guys is why is the operating range so much greater?? I would love to put one of those cams or get a custom grind cam with the LS1 grind to get that performance range!!! But I don?t think I would see the same results. But can anyone of you guys tell me why it is so much different. I was thinking that the LS1 was based off the 350 block. Are the heads at the same angle, 23*, as the traditional Chevy blocks? I really can?t think of any other differences between the two 350 motors. Well if you guys know just let me know.
Thanks you guys
My Cam (XR276HR) Comp Cams
Operating range: 1800 ? 5800
Advertised Duration: 276 in / 281 ex
Duration @ .05: 224 in / 230 ex
Lift with 1.5: .503 in / .510 ex (I?m not sure exactly what lift it would be with 1:6 rockers)
LSA: 112
LS1 Cam (XR269HR) Comp Cams
Operating range: 1300 - 6300
Advertised Duration: 269 in / 273 ex
Duration @ .05: 216 in / 220 ex
Lift with 1.7 rockers: .525 in / .532 ex
LSA: 114
One More LS1 cam(XR273HR) Comp Cam
Operating range: 1600-6600
Advertised Duration: 273 in / 277 ex
Duration @ .05: 220 in / 224 ex
Lift w/ 1:7 rockers: .530 in / .534 ex
LSA: 112
My question to you guys is why is the operating range so much greater?? I would love to put one of those cams or get a custom grind cam with the LS1 grind to get that performance range!!! But I don?t think I would see the same results. But can anyone of you guys tell me why it is so much different. I was thinking that the LS1 was based off the 350 block. Are the heads at the same angle, 23*, as the traditional Chevy blocks? I really can?t think of any other differences between the two 350 motors. Well if you guys know just let me know.
Thanks you guys