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advance or retard?
#1111909
11/12/11 11:40 AM
11/12/11 11:40 AM
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Joined: Mar 2005
Posts: 1,406
New Jersey, USA
yella71
OP
pro stock
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OP
pro stock
Joined: Mar 2005
Posts: 1,406
New Jersey, USA
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Thinking about resetting the cam in my 440 to get the cranking compression up. right now it's 135#.I felt that was a bit low. It has iron stage 4 heads that have un modified chambers with TRW 2295 pistons with stock crank and rods. the cam is a 528 mopar solid with the lash set at .020 in and ex.I think theres more power to be had in this combo. also im running a six pac that has acelorator pumps on all carbs. best et so far is 12.41 @106 Mph. Any thoughts?
71 challenger convertable, 64 sport fury 383 ci with factory air
99 sebring convertable
89 CTD pup
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Re: advance or retard?
[Re: yella71]
#1111911
11/12/11 02:44 PM
11/12/11 02:44 PM
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Joined: Oct 2003
Posts: 7,506
Az
Crizila
master
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master
Joined: Oct 2003
Posts: 7,506
Az
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Do you know the CR. 135 is too low. Advancing the cam may help a very small amount, but it won't solve your problem. My guess is that the CR is way low.
Fastest 300
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Re: advance or retard?
[Re: Crizila]
#1111912
11/12/11 02:57 PM
11/12/11 02:57 PM
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Joined: Oct 2007
Posts: 4,205
New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,205
New York
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True, psi is too low to be fixed by advancing the cam. Needs more static CR, smaller cam (or at least earlier IVC).
Boffin Emeritus
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Re: advance or retard?
[Re: Crizila]
#1111913
11/12/11 02:59 PM
11/12/11 02:59 PM
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Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
Rapid340
top fuel
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top fuel
Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
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Opening the intake lash to spec. should increase cranking pressure.
1971 Factory Appearing Duster 340 11.000 @ 122 mph
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BTW, what style, A, B, E or C body and year is the motor in? It matters as far as what else may be needed 
