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Re: Cam position relative to lifter bore
[Re: RATTRAP]
#3110384
01/09/23 04:42 PM
01/09/23 04:42 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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Is there a way to move the cam fwd in the block to get the cam lobes lined up center to the lifter bores? My cam looks like it needs to go about .125 to .25 fwd to line the lobes with the lifter bores If it’s a flat tappet cam they can’t be lined up. If it’s a roller then yes, they should be centered.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Cam position relative to lifter bore
[Re: madscientist]
#3110479
01/10/23 12:11 AM
01/10/23 12:11 AM
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Joined: May 2019
Posts: 712 Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 712
Lake Villa Il
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If you do this, check timing set gear alignment. I guess do it anyway. I needed to shim my crank sprocket for timing set in order to align with cam timing gear.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: Cam position relative to lifter bore
[Re: hemienvy]
#3110516
01/10/23 09:44 AM
01/10/23 09:44 AM
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Joined: Oct 2005
Posts: 8,868 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,868
Ontario, Canada
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I thought flat tappet lifters were offset from the lobe centerline to make them spin. Nope. The bevel on the lobes and the convex face of the lifter are what do that.
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Re: Cam position relative to lifter bore
[Re: RATTRAP]
#3110517
01/10/23 09:53 AM
01/10/23 09:53 AM
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Joined: Oct 2005
Posts: 8,868 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,868
Ontario, Canada
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My cam looks like it needs to go about .125 to .25 fwd to line the lobes with the lifter bores The key words here are "looks like". Moving the cam either way will move the oil feed holes in the cam relative to the ones in the cam journal decreasing or cutting off oil to the top end. It will move the oil pump drive gear contact point. And then there's the timing set which will probably now hit the cover and possibly not allow the balancer to properly seat which will change all your pulley alignment. Why don't you take your issue to the right place ... the cam manufacturer !!
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Re: Cam position relative to lifter bore
[Re: Stanton]
#3110529
01/10/23 10:36 AM
01/10/23 10:36 AM
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Joined: Mar 2005
Posts: 1,581 N/E, Michigan
RATTRAP
OP
pro stock
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OP
pro stock
Joined: Mar 2005
Posts: 1,581
N/E, Michigan
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My cam looks like it needs to go about .125 to .25 fwd to line the lobes with the lifter bores The key words here are "looks like". Moving the cam either way will move the oil feed holes in the cam relative to the ones in the cam journal decreasing or cutting off oil to the top end. It will move the oil pump drive gear contact point. And then there's the timing set which will probably now hit the cover and possibly not allow the balancer to properly seat which will change all your pulley alignment. Why don't you take your issue to the right place ... the cam manufacturer !! You bring up some very good points, I will do some more measurement's before I go after the cam manufacturer, could be the lifter bores in the block were drilled incorrect.
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Re: Cam position relative to lifter bore
[Re: RATTRAP]
#3110905
01/11/23 04:56 PM
01/11/23 04:56 PM
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Joined: Jan 2003
Posts: 19,361 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,361
Las Vegas
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So my next question is it a new or older version
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Cam position relative to lifter bore
[Re: Al_Alguire]
#3111159
01/12/23 12:58 PM
01/12/23 12:58 PM
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Joined: Mar 2005
Posts: 1,581 N/E, Michigan
RATTRAP
OP
pro stock
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OP
pro stock
Joined: Mar 2005
Posts: 1,581
N/E, Michigan
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So my next question is it a new or older version this is a 2012 alum block from KB
Last edited by RATTRAP; 01/12/23 12:59 PM.
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