Author Topic: One cylinder with significantly higher compression?  (Read 15879 times)

Offline quagmire

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Re: One cylinder with significantly higher compression?
« Reply #15 on: October 09, 2008 - 11:20:20 AM »
I used the method on that lash chart, rotate the motor 90* a few times after number 1 is at TDC and adjust the closed valves.  On this cam at least the valves seem to spend the majority of there time on the base circle before ramping up really quickly.  So it was pretty easy to make sure the valves were completely closed before doing any adjustments.




Offline Roppa440

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Re: One cylinder with significantly higher compression?
« Reply #16 on: October 09, 2008 - 11:36:43 AM »
OK. :thumbsup:

I just wanted to make sure it was not something more simple. ;)
Dave
1970 Challenger R/T
1997 Jeep Grand Cherokee Limited

Offline quagmire

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Re: One cylinder with significantly higher compression?
« Reply #17 on: October 09, 2008 - 02:09:43 PM »
No, I definitely appreciate all of the help and advice from everybody.  I'm thinking I'll have to yank the intake this winter too so I can visually inspect all of the lifters and the cam.  Who knows, this may turn out to be a really good excuse to get a newer and bigger cam that is actually made for Mopars.  I was looking at the Engle grinds that many suggest, it seems like all of the solid cams are race only so I was thinking about getting the K62 hydraulic cam in the maybe now not so distant future.  Any thoughts on this?  My car has a 408 stroker SB with Performer RPM heads and Air Gap intake, which I will be getting fully ported eventually.  It also has a 904 trans with a PTC 3500ish stall converter and 3.91's out back.  The vast majority of it's life will be on the street with a little strip action every now and then. 

Offline Chryco Psycho

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Re: One cylinder with significantly higher compression?
« Reply #18 on: October 09, 2008 - 06:12:54 PM »
Engle makes a great cam , so as long as the K62 is int he powerband you want the engine to work in go for it , Engle also has flat tappet solid grinds available

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Offline quagmire

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Re: One cylinder with significantly higher compression?
« Reply #19 on: October 09, 2008 - 08:17:01 PM »
I was checking out the solid grinds, but the online catalog said race only so I was concerned how well they would behave on the street.  Right now my car seems to loose steam before 6000 RPM, so I was thinking the K62 in my stroker would be a little more mellow and at a lower RPM powerband than a normal small block.  I just don't know how much more it would need.

Offline 71chally416

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Re: One cylinder with significantly higher compression?
« Reply #20 on: October 09, 2008 - 08:32:55 PM »
Right now my car seems to loose steam before 6000 RPM

That's because of your head and Intake volume. It's not enough to support a stroker motor with stock RPM heads and Intake at higher RPM's. :thumbsup:
Once we had Ronald Reagan, Bob Hope & Johnny Cash. Now we have Obama, No Hope and No Cash!

Offline quagmire

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Re: One cylinder with significantly higher compression?
« Reply #21 on: October 09, 2008 - 08:44:05 PM »
I will be getting both fully ported eventually, but it's gonna be awhile.  So I will be doing this in stages.  EFI, another LC1 wideband, windage tray, H4 light conversions, remote battery disconnect (damn NHRA), new mufflers, and several other minor things are in the works this snow season.  Apparently horsepower costs money, who knew?  :faint:

Offline Supercuda

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Re: One cylinder with significantly higher compression?
« Reply #22 on: October 17, 2008 - 08:42:09 PM »
One item that seemed to have been ignored, is the possibility of carbon build-up in the #2 cylinder. How clean were the chambers in the heads? This will also cause a higher-than-normal cranking compression reading.