390 cam
390 cam
Senior User
Joined: Nov 2000
Posts: 366
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From: Calgary
390 cam
Oops, I didn't read the "without head work" part. My heads are massaged, pocket and ports.
Found it. Crane Cam:
It's actually .548I/.580E, advertised 278I/290E duration. 114deg. lobe separation. Says "Good idle, daily performance usage, mild bracket racing, 3000-3400 cruise RPM, 9.5-10.75 compression ratio advised. Basic RPM 2200-5200."
My truck weighed in with me at just over 3900lbs.
Found it. Crane Cam:
It's actually .548I/.580E, advertised 278I/290E duration. 114deg. lobe separation. Says "Good idle, daily performance usage, mild bracket racing, 3000-3400 cruise RPM, 9.5-10.75 compression ratio advised. Basic RPM 2200-5200."
My truck weighed in with me at just over 3900lbs.
Senior User
Joined: Nov 2000
Posts: 366
Likes: 0
From: Calgary
390 cam
I was always wondering what difference it makes having uneven valve lifts on intake and exhaust? Must be for limited intake, and clean exhaust flow applications I guess. I should really get matching lifts.
Anybody know how much lift you can go on stock valve springs with 10.5:1 compression?
Anybody know how much lift you can go on stock valve springs with 10.5:1 compression?
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LxMan1
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
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Aug 25, 2002 05:34 PM
