I thought that I had it covered in my post
NEED HELP Big Block Chevy Solid Roller Cam / Lifter Question
Thread Starter
Melting Slicks
Joined: May 2006
Posts: 3,303
Likes: 14
From: Lynn MA
NEED HELP Big Block Chevy Solid Roller Cam / Lifter Question
Ok So my dad has a 13 to 1 460 inch big block with a Crower cam.
I am not sure of thje exact specs right off hand but is in the .680 lift range.
We recently broke a lifter arm so have it apart and we are setting it up on Number 1.
ALL lifters are out, timing chain, cam button, timing chain cover are all installed.
I set the distributor in for the heck of it with ALL lifters out, when I clocked it, simply rotating it, the cam shifts, it 'walks" forward nearly 1/8 inch.
Is this normal or is there a major problem? I was about to drop in the lifters and start adjusting the valves but now wonder if there is a cam walk problem.
I appreciate the input, thanks!
Tim
I am not sure of thje exact specs right off hand but is in the .680 lift range.
We recently broke a lifter arm so have it apart and we are setting it up on Number 1.
ALL lifters are out, timing chain, cam button, timing chain cover are all installed.
I set the distributor in for the heck of it with ALL lifters out, when I clocked it, simply rotating it, the cam shifts, it 'walks" forward nearly 1/8 inch.
Is this normal or is there a major problem? I was about to drop in the lifters and start adjusting the valves but now wonder if there is a cam walk problem.
I appreciate the input, thanks!
Tim
Drifting
Joined: Dec 1999
Posts: 1,462
Likes: 1
From: Reno nevada
Ok So my dad has a 13 to 1 460 inch big block with a Crower cam.
I am not sure of thje exact specs right off hand but is in the .680 lift range.
We recently broke a lifter arm so have it apart and we are setting it up on Number 1.
ALL lifters are out, timing chain, cam button, timing chain cover are all installed.
I set the distributor in for the heck of it with ALL lifters out, when I clocked it, simply rotating it, the cam shifts, it 'walks" forward nearly 1/8 inch.
Is this normal or is there a major problem? I was about to drop in the lifters and start adjusting the valves but now wonder if there is a cam walk problem.
I appreciate the input, thanks!
Tim
I am not sure of thje exact specs right off hand but is in the .680 lift range.
We recently broke a lifter arm so have it apart and we are setting it up on Number 1.
ALL lifters are out, timing chain, cam button, timing chain cover are all installed.
I set the distributor in for the heck of it with ALL lifters out, when I clocked it, simply rotating it, the cam shifts, it 'walks" forward nearly 1/8 inch.
Is this normal or is there a major problem? I was about to drop in the lifters and start adjusting the valves but now wonder if there is a cam walk problem.
I appreciate the input, thanks!
Tim
Roller lifters do not impart thrust on the cam like flat lifters
Pro
Joined: Aug 2003
Posts: 530
Likes: 0
From: Victoria Texas
That is too much end play, needs to be around .010, and a stock timing cover Will flex and push out where the button pushes aginst it. I use the heavy duty covers with the supports in them or a cast alum. cover to keep the end play set, some of the aftermarket water pumps have a stop bolt on them that you set aginst the timing cover to keep it from flexing also. Cam walk will destroy a roller cam. Doing the same thing now on 396 I am building.
Drifting
Joined: Dec 1999
Posts: 1,462
Likes: 1
From: Reno nevada
Melting Slicks
Joined: Oct 2011
Posts: 2,748
Likes: 90
From: Sacramento California
C2 of Year Finalist (performance mods) 2019
2018 C2 of Year Finalist
Re-read the post. Your response would be accurate if it was being turned over at the crank.....
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