Re: Cam changes or not.
[Re: 383man]
#1131673
12/12/11 02:47 AM
12/12/11 02:47 AM
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Joined: Feb 2004
Posts: 4,501 Gainesville,FL
goldmember
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master
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Posts: 4,501
Gainesville,FL
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You'd want to loosen(not tighten) the lash a few thou if you want to help the bottom end. I think the cams a little long for the combo,I'd knock 10-14 degrees out and you'll be fine. Tim @ bullet cams has what you need if you cannot tune the current combo to suit your needs.
Last edited by goldmember; 12/12/11 02:49 AM.
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Re: Cam changes or not.
[Re: kilroy]
#1131675
12/12/11 10:04 AM
12/12/11 10:04 AM
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Joined: Mar 2005
Posts: 862 Iowa State fan
kilroy
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1 questions.
1) What I dont understand in dynamic CR calcs; they always ask for intake closing event, would not more be determined by the exhaust closing event since they never ask for more specs than just the intake closing event?
Last edited by kilroy; 12/12/11 10:46 AM.
1973 Charger, former SE, former auto
I'm not trying to be difficult, it comes naturally....
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Re: Cam changes or not.
[Re: kilroy]
#1131677
12/12/11 10:23 AM
12/12/11 10:23 AM
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Joined: Mar 2005
Posts: 862 Iowa State fan
kilroy
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Hey guys I found a really great list of calculators!!! Finally found one I can put in cam specs and get the events. Good stuff. http://www.wallaceracing.com/Calculators.htmReally eye opening what Ive been discovering. also how much of the calc theories applies and works directly in the real world? ALSO discovered that lunati gives there cam events @.050 which I think is the wrong number to use in a dynamic calc?
Last edited by kilroy; 12/12/11 10:48 AM.
1973 Charger, former SE, former auto
I'm not trying to be difficult, it comes naturally....
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Re: Cam changes or not.
[Re: kilroy]
#1131678
12/12/11 10:46 AM
12/12/11 10:46 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Romeo MI
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The thing with the intake closing is thats the last thing to happen as the piston is starting up the cyl... you wont start to make compression until the intake closes... the dynamic compression starts when the intake closes but it determines where the piston is in the upward stroke... if you look at the wallace site(dynamic compression) you will see that it gives you the EFFECTIVE STROKE... thats the length of compression you have
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Re: Cam changes or not.
[Re: kilroy]
#1131682
12/12/11 04:35 PM
12/12/11 04:35 PM
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Joined: Feb 2004
Posts: 964 Nanaimo, B.C.
GwaiiEagle
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Nanaimo, B.C.
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448 Stroker. 282S Magnum cam lashed at 23 instead of stock 22, 84 cc Eddy's, Crane 1.6's, RPM intake 850dp with 4hole 1 inch spacer, 1.75 headers, 11 inch converter.
A *&^%load of torque, best 60 ft time of 1.65 launching at 1100.
I was wondering in an earlier post about switching to your cam :^/
The giggle factor because of the torque is pretty high with a 3.91 gear.
It is a good winter project, but I wonder, because of the 4 speed if there is a better cam for you than either the magnum 282S or the .557.
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Re: Cam changes or not.
[Re: GwaiiEagle]
#1131683
12/12/11 05:29 PM
12/12/11 05:29 PM
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Joined: Mar 2005
Posts: 862 Iowa State fan
kilroy
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Quote:
448 Stroker. 282S Magnum cam lashed at 23 instead of stock 22, 84 cc Eddy's, Crane 1.6's, RPM intake 850dp with 4hole 1 inch spacer, 1.75 headers, 11 inch converter.
A *&^%load of torque, best 60 ft time of 1.65 launching at 1100.
I was wondering in an earlier post about switching to your cam :^/
The giggle factor because of the torque is pretty high with a 3.91 gear.
It is a good winter project, but I wonder, because of the 4 speed if there is a better cam for you than either the magnum 282S or the .557.
Probably is a really a better cam aside from those but, they are the cams I have on hand, that and a MP P4120237 (509cam hyd). Christmas and money as said before are tight but I do have talent the want to tinker.
I know you have a SB but how many Rpm will yours turn?
Mine has plenty of power in the band as stated before and will pull well up to 7k (that my limit with what I have in the motor). Just really doesnt wake up till about 3k and above.
1973 Charger, former SE, former auto
I'm not trying to be difficult, it comes naturally....
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Re: Cam changes or not.
[Re: kilroy]
#1131684
12/12/11 08:42 PM
12/12/11 08:42 PM
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Joined: Feb 2004
Posts: 964 Nanaimo, B.C.
GwaiiEagle
Mannix
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Mannix
Joined: Feb 2004
Posts: 964
Nanaimo, B.C.
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Quote:
Quote:
448 Stroker. 282S Magnum cam lashed at 23 instead of stock 22, 84 cc Eddy's, Crane 1.6's, RPM intake 850dp with 4hole 1 inch spacer, 1.75 headers, 11 inch converter.
A *&^%load of torque, best 60 ft time of 1.65 launching at 1100.
I was wondering in an earlier post about switching to your cam :^/
The giggle factor because of the torque is pretty high with a 3.91 gear.
It is a good winter project, but I wonder, because of the 4 speed if there is a better cam for you than either the magnum 282S or the .557.
Probably is a really a better cam aside from those but, they are the cams I have on hand, that and a MP P4120237 (509cam hyd). Christmas and money as said before are tight but I do have talent the want to tinker.
I know you have a SB but how many Rpm will yours turn?
Mine has plenty of power in the band as stated before and will pull well up to 7k (that my limit with what I have in the motor). Just really doesnt wake up till about 3k and above.
The 448 is a BB (.020 400 block with a 3.75 stroke)
It pulls quite strongly to 5800 and a is little flat after that.
Last edited by GwaiiEagle; 12/12/11 08:44 PM.
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Re: Cam changes or not.
[Re: kilroy]
#1131687
12/12/11 11:04 PM
12/12/11 11:04 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Romeo MI
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Quote:
Quote:
The 448 is a BB (.020 400 block with a 3.75 stroke)
It pulls quite strongly to 5800 and a is little flat after that.
Never thought about that.
Bummer I like to turn mine to about 6k some too 6500.
If you like to turn it up to 6500.... I would see if you CAN advance the cam.. IF you have the piston to valve clearance... if so then I would advance it about 4*-6*... that moves the whole torque and HP range lower in the rpm's... gives you more effective stroke so it would up the cyl pressure... I have my cam advanced 6* in the race car but I have the cam in my street rod straight up but thats a tight 105 LSA cam and I dont want the added torque because it would raise the stall point higher than I need
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