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Re: Highest lift cam on stock 440 ?
[Re: Dodgeballs]
#522733
11/10/09 07:00 PM
11/10/09 07:00 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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.480ish or when you bend a p-rod.. whichever comes first.
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Re: Highest lift cam on stock 440 ?
#522734
11/10/09 07:15 PM
11/10/09 07:15 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Going out on a limb I would think no way on those lifts w your deck dimentions. I'd flycut the reliefs deeper & hughes sells a cutter shaped like a valve for this. I'm assuming your shortblock is together  . You would want the piston deck to be at least .150" thick after deepening and it would change your balance slightly.
live every 24 hour block of time like it's your last day on earth
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Re: Highest lift cam on stock 440 ?
[Re: Dodgeballs]
#522738
11/10/09 08:34 PM
11/10/09 08:34 PM
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Joined: May 2003
Posts: 1,751
Graham, WA
Polarapete
top fuel
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top fuel
Joined: May 2003
Posts: 1,751
Graham, WA
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I ran a 296 degree 557 lift Purpleshaft cam in a 440 with 906 heads and TRW 6-pack pistons...twenty years ago! As I recall, I put one head on the block w/o a head gasket and some clay on the piston, set the valves in that cylinder to spec and rolled it over. It must have cleared with room to spare, because the engine ran great and the car was very consistent.
1986 Dodge Ramcharger 440 2wd, Bracket Racer Under Construction
1998 Ram 2500 QuadCab, new daily driver.
2008 Honda Element
2014 Carry-On 7x14 Cargo Trailer
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Re: Highest lift cam on stock 440 ?
[Re: Dodgeballs]
#522740
11/10/09 09:40 PM
11/10/09 09:40 PM
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Anonymous
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Anonymous
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Quote:
Heads already have dual springs on them. I'm just worried about piston to valve clearance.
Kuddos to you for leaving that part out.. worried? measure it. period.
or guess, or go by whoevers word.. whatev.
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Re: Highest lift cam on stock 440 ?
[Re: Thackdaddy]
#522741
11/10/09 09:45 PM
11/10/09 09:45 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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You could mock it up w a pair of light springs and a dial indicator & w the piston @TDC move the valve down .557 (or .509) plus .080 addt'l on the intake valve & .100" on the ex valve & if no contact then in use with the piston/valve phasing it could never be any tighter than that. Might be something to check before you purchase a cam.
live every 24 hour block of time like it's your last day on earth
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Re: Highest lift cam on stock 440 ?
[Re: Dodgeballs]
#522743
11/10/09 10:44 PM
11/10/09 10:44 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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If you're all assembled you could take off a pair of springs w an on engine valve spring compressor & put on the light springs & experiment a bit. iirc one of the cam companies once you had that dimention in hand had a spec sheet listed that would tell you which one(s) of their cams would clear and you could probably cross that over to our MP cams
live every 24 hour block of time like it's your last day on earth
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Re: Highest lift cam on stock 440 ?
#522744
11/10/09 10:47 PM
11/10/09 10:47 PM
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Joined: Jun 2004
Posts: 469
Hawaii
Dodgeballs
OP
mopar
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OP
mopar
Joined: Jun 2004
Posts: 469
Hawaii
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I'm sorry. I didn't know that having dual springs on the head already would affect piston to valve clearance. Maybe you could explain it to me. And if you bothered to read my first post, you would see that I acknowledged that I need to check the clearance. I just wanted to know what I probably could run. Hence, I wouldn't buy something too big that would not have any chance to work. So I'm asking "whoevers" to get a feel of what will work. I will then get a cam that will likely work. Then I will check the clearance. I never asked what cam I could run with stock springs. I know to match the springs with the cam (but thanks MoparforLife for pointing that out - no sarcasm intended at all). So kudos to you MoPowered_SS for raising a red herring.. whatev (wags head in circle and gives the "talk to the hand"). Quote:
Quote:
Heads already have dual springs on them. I'm just worried about piston to valve clearance.
Kuddos to you for leaving that part out.. worried? measure it. period.
or guess, or go by whoevers word.. whatev.
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Re: Highest lift cam on stock 440 ?
[Re: Dodgeballs]
#522745
11/10/09 10:56 PM
11/10/09 10:56 PM
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Anonymous
Unregistered
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Anonymous
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Subject: Highest lift cam on a stock 440?
nowhere in post #5597643 said your using double springs.
think about the subject before putting fingers to keys. thank you.
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Re: Highest lift cam on stock 440 ?
[Re: RapidRobert]
#522746
11/10/09 10:58 PM
11/10/09 10:58 PM
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Joined: Jan 2003
Posts: 931
dulcich
super stock
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super stock
Joined: Jan 2003
Posts: 931
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Quote:
You could mock it up w a pair of light springs and a dial indicator & w the piston @TDC move the valve down .557 (or .509) plus .080 addt'l on the intake valve & .100" on the ex valve & if no contact then in use with the piston/valve phasing it could never be any tighter than that. Might be something to check before you purchase a cam.
I'm sure they will hit if you do this test. Peak valve lift is not at TDC, but occurs at about 106-112 degrees of crank rotation. The piston is a mile down the hole by then. You can test with a dial indicator, but not like this. A clay test would be the simplest.
-dulcich
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Re: Highest lift cam on stock 440 ?
[Re: Dusted_Ya]
#522751
11/11/09 10:05 AM
11/11/09 10:05 AM
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Joined: Dec 2007
Posts: 387
n/w, PA
demonH1B
enthusiast
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enthusiast
Joined: Dec 2007
Posts: 387
n/w, PA
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I agree with the coil bind & retainer to guide factor. Over .500 lift I would be sure to check this, with stock valves. 
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