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help.. i neeeeeeeed a new cam
#232992
02/22/09 05:54 PM
02/22/09 05:54 PM
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Joined: Sep 2008
Posts: 219
so cal
cmcgee123
OP
enthusiast
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OP
enthusiast
Joined: Sep 2008
Posts: 219
so cal
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my car falls off on the big end and wont make enough rpm to get me through the light.
engine 440 true 11.0-1 forged pistons weind team g with 850 holley full msd ignition 906 head (i will work the heads to accomodate the cam) 200 hit n2o hooker super com headers 3" exhaust dumped before the axle 4.30 gears 28 13.5 et street 3500 stall footbrake car right now the car has a .540 230 durration hyd flat tappet. oh yeah im gonna be switching to 1.6 ratio rockers also.
the car was going through the traps around 6400 rpm so i need a cam that wont be completely dead by then. solid roler is kinda out of the question for now due to cash.
nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
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Re: help.. i neeeeeeeed a new cam
[Re: cmcgee123]
#232994
02/22/09 06:26 PM
02/22/09 06:26 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
my car falls off on the big end and wont make enough rpm to get me through the light.
engine 440 true 11.0-1 forged pistons weind team g with 850 holley full msd ignition 906 head (i will work the heads to accomodate the cam) 200 hit n2o hooker super com headers 3" exhaust dumped before the axle 4.30 gears 28 13.5 et street 3500 stall footbrake car right now the car has a .540 230 durration hyd flat tappet. oh yeah im gonna be switching to 1.6 ratio rockers also.
the car was going through the traps around 6400 rpm so i need a cam that wont be completely dead by then. solid roler is kinda out of the question for now due to cash.
Before you go buying a cam I'd look at a few things,
is it a fuel problem, is it a valve spring problem
or am I running out of air(too small of a carb). I'd
look at these things first
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Re: help.. i neeeeeeeed a new cam
[Re: MR_P_BODY]
#232995
02/22/09 06:35 PM
02/22/09 06:35 PM
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Joined: Sep 2008
Posts: 219
so cal
cmcgee123
OP
enthusiast
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OP
enthusiast
Joined: Sep 2008
Posts: 219
so cal
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the rods are hp rods bushed with arp bolts. i am upgrading the fuel system as well and the car on motor falls on its face around 5700 @ 13.0 afr i have a wideband in the car. and i usually shift the car right before 6k rpm if the car made power to 61-6200 i could shift there and probably not be as high in the rpm going through the lights. and c'mon its a hydraulic flat tappet cam  its gotta go. 
nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
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Re: help.. i neeeeeeeed a new cam
[Re: cmcgee123]
#232996
02/22/09 06:37 PM
02/22/09 06:37 PM
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Joined: Sep 2008
Posts: 219
so cal
cmcgee123
OP
enthusiast
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OP
enthusiast
Joined: Sep 2008
Posts: 219
so cal
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o here is my last timeslip
60' 1.575
330 4.561
1/8 7.114
mph 95.39
1000 9.375
1/4 11.289
mph 116.82
nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
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Re: help.. i neeeeeeeed a new cam
[Re: cmcgee123]
#232997
02/22/09 06:59 PM
02/22/09 06:59 PM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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I`m an isky man myself and my last 906 headed combo went 10.40`s all day long and was my daily driver. I`m the guy that goes bigger than recommended on cams and I wouldn`t be afraid to run something in the 580-600 lift range w/250-260 duration but, that`s just me. My cam in the mentioned combo was an isky solid w/590-605 lift and the dur. was around 250-260 if I remember correctly.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: help.. i neeeeeeeed a new cam
[Re: cmcgee123]
#232998
02/22/09 07:09 PM
02/22/09 07:09 PM
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Joined: Aug 2003
Posts: 43,721
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,721
Bend,OR USA
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11:28 at 116.82 makes me think that your out of fuel past the 1000 ft. timers, you havwe enough fuel to go on the first half of the track but not the last half. You should also try testing the valve springs for pressure, most stock 383 & 440 with stock heads, valves and the stock magnum valve springs with stock valves and retainers will rev well past 6000 in first and second gear and rev past that in high gear also  Something is gravely wrong I fear, the NOS is geting the results but the motor needs help I think. is the NOS to rich on the fuel side possibly?
Last edited by Cab_Burge; 02/24/09 03:20 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: help.. i neeeeeeeed a new cam
[Re: cmcgee123]
#233003
02/22/09 09:41 PM
02/22/09 09:41 PM
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Joined: Sep 2008
Posts: 219
so cal
cmcgee123
OP
enthusiast
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OP
enthusiast
Joined: Sep 2008
Posts: 219
so cal
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just started pulling the motor appart found #5 intake valve pushrod is bent the valve is fully seated though. so hopefully no valve or head dammage.
nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
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Re: help.. i neeeeeeeed a new cam
[Re: cmcgee123]
#233004
02/22/09 10:15 PM
02/22/09 10:15 PM
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Joined: Sep 2004
Posts: 2,094
oberlin, Ohio
Rapid340
top fuel
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top fuel
Joined: Sep 2004
Posts: 2,094
oberlin, Ohio
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I can get you an Engle cam for your motor.
I will say this, I think you are leaving alot on the table with the cam you running. Most RB's running 6K or more with hydraulics have trouble maintaining control of the valve. 1.6 rockers will make things worse.
PM me if interested in a recommendation and price.
1971 Factory Appearing Duster 340 11.000 @ 122 mph
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Re: help.. i neeeeeeeed a new cam
[Re: Rapid340]
#233005
02/22/09 10:20 PM
02/22/09 10:20 PM
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Joined: Sep 2008
Posts: 219
so cal
cmcgee123
OP
enthusiast
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OP
enthusiast
Joined: Sep 2008
Posts: 219
so cal
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probably gonna be running an isky since they are local to me something in the low .600 lift range what i need help with is the duration and lobe sepperation  and suggestions? someone with a similar motor. but i guess 11.23 wasnt bad for a 7 cylinder  
nitrous is like a really hot chick with an std you want to hit it but youre affraid of the outcome.
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Re: help.. i neeeeeeeed a new cam
[Re: cmcgee123]
#233006
02/22/09 10:30 PM
02/22/09 10:30 PM
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Joined: Jul 2006
Posts: 528
N.W. Indiana
DblOJoe
mopar
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mopar
Joined: Jul 2006
Posts: 528
N.W. Indiana
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Quote:
but i guess 11.23 wasnt bad for a 7 cylinder
NOS can cover up alot of problems. My 
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Re: help.. i neeeeeeeed a new cam
[Re: cmcgee123]
#233007
02/22/09 10:34 PM
02/22/09 10:34 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
probably gonna be running an isky since they are local to me something in the low .600 lift range
what i need help with is the duration and lobe sepperation and suggestions? someone with a similar motor.
but i guess 11.23 wasnt bad for a 7 cylinder
I cant believe you just want to through money at it
without trying to max out what you have.... he11
save you money and spray it with another 150 on top
of the 175. Naaa, a nitrous cam likes a wider lsa
like a 114, since you you are running a stock head
you want more duration... like a 275-280 with .600+
lift
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Re: help.. i neeeeeeeed a new cam
[Re: cmcgee123]
#233009
02/22/09 11:55 PM
02/22/09 11:55 PM
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Joined: Jan 2003
Posts: 5,487
SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,487
SoCal
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Quote:
Quote:
11:28 at 116.82 makes me think that your out of fuel past the 100 ft. timers, you havwe enough fuel to go on the first half of the track but not the last half. You should also try testing the valve springs for pressure, most stock 383 & 440 with stock heads, valves and hte stock magnum valve springs with stock valves and retainers will rev well past 6000 in first and second gear and rev past that in high gear also Something is gravely wrong I fear, the NOS is geting the results but the motor needs help I think. is the NOS to rich on the fuel side possibly?
its not that the engine cant turn the rpm it just doesnt make power up top. im taking the heads off, porting them, putting in new springs to match whatever cam i get and upping the fuel delivery. the nos is lean on the fuel side im jetted 82 n2o 73 fuel @ 6psi 900 psi bottle pressure.
im not really wondering "whats wrong" with my combo i really just want a good cam reccomendation bassed on what my car has in it.
If you need any help, or want a cam, I'm an Isky and Comp cams dealer so give me a ring when your ready...
Brian
www.immengines.com
Brian Hafliger
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