
Custom Cam grind numbers
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- Movin on up ^
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Custom Cam grind numbers
I'll be the first to admit that I have little knowledge of what these number mean. So I thought I would ask some people who might be able to help me out. The lift is +.019(intake) and +.024(exhaust) over the OEM Cam. Could I still use stock valve springs, or would they bind?
This custom grind is offered by Clegg.

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- Movin on up ^
- Posts: 314
- Joined: February 22nd, 2014, 7:27 pm
- Stroker Displacement: 4.6
- Vehicle Year: 1981
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Re: Custom Cam grind numbers
I forgot to add the photo.
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- I made it to triple digits!
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Re: Custom Cam grind numbers
I thought the stock valve lift was something like .428?
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- Movin on up ^
- Posts: 314
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- Vehicle Year: 1981
- Vehicle Make: Jeep
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Re: Custom Cam grind numbers
The 96-04 OEM cam had .408" intake .414"exhaust lift. This Clegg cam is .427" .438". Will my stock springs bind?
- SilverXJ
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Re: Custom Cam grind numbers
The springs won't bind but I would also ask the recommended loads as that is very important as well.
2000 XJ. 4.6L stroker
00+ Viper Coil Swap | CPS Timing Increase Mod | Fabricated Airbox | Dash bezel, Arduino Multigauge & RD Conceal
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00+ Viper Coil Swap | CPS Timing Increase Mod | Fabricated Airbox | Dash bezel, Arduino Multigauge & RD Conceal
Eat, breath, drink, sleep, Jeep, drink
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- Movin on up ^
- Posts: 314
- Joined: February 22nd, 2014, 7:27 pm
- Stroker Displacement: 4.6
- Vehicle Year: 1981
- Vehicle Make: Jeep
- Vehicle Model: CJ8
- Location: New Prague, MN
Re: Custom Cam grind numbers
This is important to avoid float?
- SilverXJ
- Global Moderator
- Posts: 5790
- Joined: February 14th, 2008, 7:14 am
- Stroker Displacement: 4.6L
- Vehicle Year: 2000
- Vehicle Make: Jeep
- Vehicle Model: Cherokee
- Location: Radford, Va
Re: Custom Cam grind numbers
If you like your valves in the unbent form, yes.
2000 XJ. 4.6L stroker
00+ Viper Coil Swap | CPS Timing Increase Mod | Fabricated Airbox | Dash bezel, Arduino Multigauge & RD Conceal
Eat, breath, drink, sleep, Jeep, drink
00+ Viper Coil Swap | CPS Timing Increase Mod | Fabricated Airbox | Dash bezel, Arduino Multigauge & RD Conceal
Eat, breath, drink, sleep, Jeep, drink
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- Movin on up ^
- Posts: 314
- Joined: February 22nd, 2014, 7:27 pm
- Stroker Displacement: 4.6
- Vehicle Year: 1981
- Vehicle Make: Jeep
- Vehicle Model: CJ8
- Location: New Prague, MN
Re: Custom Cam grind numbers
I see. I had all of the springs tested today at the machine shop. They tested a little low....68 lbs at whatever compression distance was stated in machinist's book. I forgot the exact numbers but they compressed each spring to a certain distance and measured the force it took to get there. They were a couple of pounds short. It took on average 68 pounds to compress them and it was supposed to take 71-79 pounds. My machinist gave me some .030 shims to put under the springs. And that brought them into acceptable range. But for the cost of new springs I think that I'll just replace them.
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