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  • June 21, 2024, 04:03:56 PM

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Author Topic: Smaller cam?  (Read 1925 times)

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Offline DaemonForce

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Smaller cam?
« on: March 03, 2012, 06:57:26 AM »
I have the stock AMC cam in my 258 and I'm finally rebuilding the spare. I'm thinking about going to a REALLY small 240H Comp Cam in the near future. Extreme specs like 240/248 duration make me a little uneasy but I'm willing to bet it's very streetable. I've decided that if I need more low end torque I'll be using a low gear transfer case to do it. 95% of the time this bird is on the freeway doing completely insane distance trips and it's unusual for me to tow anything anyway so I think it's a pretty good idea. There may be the rare day where I'm finally towing a Javelin or FSJ or something but I figure I'll have a low gear transfer case by then too. I have a feeling this sounds completely ridiculous to most of you. If it is, let me know. ::)
1983 Limited
AMC 258C {R2:27.Jun.13}
Carter 2681 {R2:28.Oct.12}
TorqueFlite A998 {R6: -20.Apr.12}
NP129 {R2:28.Apr.12}
M35-273 {???}
Compression: 0
Corrected Idle: 0RPM

Rebuild:
???

Offline eaglefreek

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Re: Smaller cam?
« Reply #1 on: March 03, 2012, 07:15:55 AM »
I wouldn't call that a small cam. It would be a significant improvent over stock. Juzt don't use the Comp Cam springs if you want the cam to last. Stock springs will be fine.
1986 AMC Eagle Wagon 4.2L/4.0L head, AW4,NP242, Chrysler 8.25" rear.
1981 AMC Eagle Wagon As Seen On TV  Lost In Transmission


 

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Offline DaemonForce

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Re: Smaller cam?
« Reply #2 on: March 03, 2012, 08:08:54 AM »
Which ones? I have the 258 head but I intend to rebuild a 242 head I pulled last month and replace the rockers and valves.
1983 Limited
AMC 258C {R2:27.Jun.13}
Carter 2681 {R2:28.Oct.12}
TorqueFlite A998 {R6: -20.Apr.12}
NP129 {R2:28.Apr.12}
M35-273 {???}
Compression: 0
Corrected Idle: 0RPM

Rebuild:
???

Offline carnuck

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Re: Smaller cam?
« Reply #3 on: March 03, 2012, 10:32:32 AM »
 and springs are pretty close. I'd run the ones with the least miles or have never been overheated. You need to pull the head to do the cam anyways.
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

 

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