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Re: too much cam????? kinda long-please help!!!!!
[Re: GomangoCuda]
#723446
06/14/10 11:29 AM
06/14/10 11:29 AM
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Joined: Nov 2009
Posts: 2,177
ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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 6800 traps diff not right for that et or speed now 2.1 60 ?? lot of spin maybe but its slow everywhere fuel del somewhere , tranny problem for sure was it full of fluid?? dumb question ,, had to ask? getting full throttle ??   3 bagger
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Re: too much cam????? kinda long-please help!!!!!
[Re: dennismopar73]
#723447
06/14/10 04:43 PM
06/14/10 04:43 PM
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Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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60' time is terrible...street tires??
Tony
70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: too much cam????? kinda long-please help!!!!!
[Re: 68DART360]
#723451
06/14/10 08:04 PM
06/14/10 08:04 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:
I did not see it mentioned but I would first check to see that you have the throttle plates open all the way when you have the gas pedal to the floor. It will kill et from start to finish. Although most of the other comments about degreeing the cam and so on are things that should also be checked. Good luck!
You would be surprised at how much the blades can be
closed before it really has ant effect on the ET...
I tried slowing my car down to 10.0 and I am at a little
less than 1/2 throttle and without short shifting
it would only slow it about .6 ... thats from 9.0
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Re: too much cam????? kinda long-please help!!!!!
[Re: moparmanjames]
#723453
06/14/10 10:47 PM
06/14/10 10:47 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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In all fairness your car is pretty light compared to his Mr.P I think they screwed up his converter as well, 6800 rpm with a 3.55 gear running only 98 mph? Plus, the cam isn't that big compared to that healthy hydraulic that was in it. I agree with you that it needs to be degreed though. I would degree the cam and see if you can borrow a decent converter from some cool guy in Vegas 
I would believe there is a conv or trans slipping
issue, thats why I said that earier
Yes I know that weight will have a factor with the
carb not being open but guys really think if its a
1/8" from being full open its going to make a difference
it wont... just went through this a few weeks ago
with a heavy type car... didnt do diddiley... but
if it were closed enough it will kill torque(acts
like a small carb)
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Re: too much cam????? kinda long-please help!!!!!
[Re: MR_P_BODY]
#723454
06/14/10 10:53 PM
06/14/10 10:53 PM
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Joined: Jan 2005
Posts: 1,260
Las Vegas NV
moparmanjames
pro stock
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pro stock
Joined: Jan 2005
Posts: 1,260
Las Vegas NV
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Quote:
In all fairness your car is pretty light compared to his Mr.P
I think they screwed up his converter as well, 6800 rpm with a 3.55 gear running only 98 mph?
Plus, the cam isn't that big compared to that healthy hydraulic that was in it. I agree with you that it needs to be degreed though.
I would degree the cam and see if you can borrow a decent converter from some cool guy in Vegas
I would believe there is a conv or trans slipping
issue, thats why I said that earier
Yes I know that weight will have a factor with the
carb not being open but guys really think if its a
1/8" from being full open its going to make a difference
it wont... just went through this a few weeks ago
with a heavy type car... didnt do diddiley... but
if it were closed enough it will kill torque(acts
like a small carb)
I agree and that brings up another good point, if you are running a carb that is already a bit small then moving the throttle position will have a greater effect than on the bigger carbs like dominators.
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Re: too much cam????? kinda long-please help!!!!!
[Re: MR_P_BODY]
#723457
06/14/10 11:43 PM
06/14/10 11:43 PM
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Joined: Jan 2005
Posts: 1,260
Las Vegas NV
moparmanjames
pro stock
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pro stock
Joined: Jan 2005
Posts: 1,260
Las Vegas NV
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Quote:
I agree and that brings up another good point, if you are running a carb that is already a bit small then moving the throttle position will have a greater effect than on the bigger carbs like dominators.
The carb I was playing with a couple of weeks ago
was a 850
I would think that closing the throttle plates would decrease the CFM but raise the velocity, kind of like putting a smaller carb on to get better low end response, but it will suffer on the big end.
I had a nice 650 DP that my friend borrowed for his 10:1 427 chevy and it ran 11.60 with a 1.49 60. We ultimately switched to an 850 and it went 11.47 with a 1.51 60.
The car weighed 3400 lbs.
So basically you are correct, it takes alot of throttle plate movement to knock off a full second of ET no matter what the car weighs lol.
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Re: too much cam????? kinda long-please help!!!!!
[Re: Labratt]
#723458
06/14/10 11:50 PM
06/14/10 11:50 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:
Mike,are you referring to the 850 on the GTX not opening all the way at the track? 
Yeah that was one... but my bubby stopped by with his
truck also with some carb issues
Yes the smaller carb has a better low end response but
it will suffer on the big end
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, also sounds like not enough fuel , maybe larger jets?
