Crane H260 cam?
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Senior User
Joined: Apr 2004
Posts: 259
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From: Eastern Ohio
Crane H260 cam?
Most people on this forum like the Comp Cams
I have a very heavy F350, Dana 66's front and rear.
I am in the process of sticking a Crane H260-2 cam in it for a little more valve lift without a lot of duration.
Any comments gang?
I have a very heavy F350, Dana 66's front and rear.
I am in the process of sticking a Crane H260-2 cam in it for a little more valve lift without a lot of duration.
Any comments gang?
Cargo Master
Joined: May 2003
Posts: 2,561
Likes: 1
From: Earth
Are you replacing the springs and such as well? That has a .493/.502 grind, more than than your stock springs will take I believe. Is it a 400 or 351? Given that it is in an F350, I would assume the 400.
Posting Guru
Joined: Dec 2002
Posts: 2,003
Likes: 2
From: chicago burbs
from Bubbas site,
Stock intake valve springs go solid (coil bind) at 0.490" valve lift. The stock springs on early non-rotating exhaust valves allow the same lift as the stock intake valve springs, but the springs on the later rotating exhaust valves go solid at just 0.480" valve lift. That is less lift than many popular performance cams provide, even the milder ones like the Edelbrock #2172 (0.484/0.510 gross lift) and the Comp Cams 255DEH (0.469/0.505 gross lift). Using the stock rotating exhaust valve springs and retainers with either of those cams will cause bent push rods.
Stock intake valve springs go solid (coil bind) at 0.490" valve lift. The stock springs on early non-rotating exhaust valves allow the same lift as the stock intake valve springs, but the springs on the later rotating exhaust valves go solid at just 0.480" valve lift. That is less lift than many popular performance cams provide, even the milder ones like the Edelbrock #2172 (0.484/0.510 gross lift) and the Comp Cams 255DEH (0.469/0.505 gross lift). Using the stock rotating exhaust valve springs and retainers with either of those cams will cause bent push rods.
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