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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: Supersonic]
#270842
04/05/09 05:58 PM
04/05/09 05:58 PM
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Joined: Oct 2004
Posts: 6,293
Northeast, Alpine, NY
9 Sec Phill
On a road near you
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On a road near you
Joined: Oct 2004
Posts: 6,293
Northeast, Alpine, NY
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Quote:
The car spun badly the first 2 time runs, my first elimination run it went a 1.45 60', 6.61 at 103 in the 1/8th, i had the mustang beat badly so i let off and go on the brakes hard and went through at 10.49 @ 114. Hopefully in some really good air it will get into the high 20's. My best 60' with the 4.88's was 1.44, the car go's through at about 6500 now.
Your 60's will drop more with better hook. I was hoping to see more MPH but you did hit the brakes, still your only .01 off your best 60 with the 4.88's...not bad for first time out.  ..Phill
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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: 9 Sec Phill]
#270843
04/05/09 06:02 PM
04/05/09 06:02 PM
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Joined: Jul 2008
Posts: 51
Cumberland, MD
Supersonic
OP
member
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OP
member
Joined: Jul 2008
Posts: 51
Cumberland, MD
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Quote:
Quote:
The car spun badly the first 2 time runs, my first elimination run it went a 1.45 60', 6.61 at 103 in the 1/8th, i had the mustang beat badly so i let off and go on the brakes hard and went through at 10.49 @ 114. Hopefully in some really good air it will get into the high 20's. My best 60' with the 4.88's was 1.44, the car go's through at about 6500 now.
Your 60's will drop more with better hook. I was hoping to see more MPH but you did hit the brakes, still your only .01 off your best 60 with the 4.88's...not bad for first time out. ..Phill
It went through at 128 my fist time run, but it spun almost sideways off the line, my 60' was1.52 and it only ran a 10.54 that run. I think it will be over 130 mph with a good full pass
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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: 9 Sec Phill]
#270845
04/05/09 06:11 PM
04/05/09 06:11 PM
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Joined: Jul 2008
Posts: 51
Cumberland, MD
Supersonic
OP
member
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OP
member
Joined: Jul 2008
Posts: 51
Cumberland, MD
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Quote:
You might enen want to try a higher gear still, some 3.91's...you might be suprised at the out come.  ...Phill
Yea, with these iron heads i know i need to keep the motor around the 5600-5900 range as long as possible. I wish gears didn't cost so much money, i'd try a set.
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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: B1MAXX]
#270847
04/06/09 01:31 PM
04/06/09 01:31 PM
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Joined: Jul 2008
Posts: 51
Cumberland, MD
Supersonic
OP
member
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OP
member
Joined: Jul 2008
Posts: 51
Cumberland, MD
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Quote:
Continue to keep us posted. Let us know when it does go quicker than the 4:88's
Sounds good, i probably won't make it back down for a few weeks.
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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: B1MAXX]
#270848
11/02/09 08:53 PM
11/02/09 08:53 PM
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Joined: Jul 2008
Posts: 51
Cumberland, MD
Supersonic
OP
member
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OP
member
Joined: Jul 2008
Posts: 51
Cumberland, MD
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Quote:
Continue to keep us posted. Let us know when it does go quicker than the 4:88's
Was at the track sunday, the car ran 10.23 @ 129 with the 4.30's and nothing else done to the motor. Air was decent
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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: B1MAXX]
#270850
11/03/09 01:49 PM
11/03/09 01:49 PM
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Joined: Feb 2007
Posts: 6,295
U.S.
moparniac
master
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master
Joined: Feb 2007
Posts: 6,295
U.S.
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If he was nosing over through the gears from too high of rpm wouldnt the 4.30's be better shifting lower rpm..... what rpm did you shift at with the 4.30's ?
Mopar Performance
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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: Supersonic]
#270851
11/03/09 05:31 PM
11/03/09 05:31 PM
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Joined: Jan 2003
Posts: 16,925
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,925
NC
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Quote:
Quote:
7200 running a 10.38 @ 127 with 4.88's
Was at the track sunday, the car ran 10.23 @ 129 with the 4.30's and nothing else done to the motor. Air was decent
That is a good gain. What was the sixty foot comparison? Was the weather similar on both runs?
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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: 440Jim]
#270852
11/03/09 10:08 PM
11/03/09 10:08 PM
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Joined: Jul 2008
Posts: 51
Cumberland, MD
Supersonic
OP
member
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OP
member
Joined: Jul 2008
Posts: 51
Cumberland, MD
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Quote:
Quote:
Quote:
7200 running a 10.38 @ 127 with 4.88's
Was at the track sunday, the car ran 10.23 @ 129 with the 4.30's and nothing else done to the motor. Air was decent
That is a good gain. What was the sixty foot comparison? Was the weather similar on both runs?
yes, the weather was close on both of those runs. Best 60' with the 4.88 gears was a 1.46, and best with the 4.30's was a 1.42. I am running a crane cam with 700 lift. Shifting the car at 6000 now and it goes through the traps around 6500.
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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: 340man4ever]
#270853
11/03/09 10:20 PM
11/03/09 10:20 PM
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Joined: Mar 2008
Posts: 216
still waiting on 684
Kiner
enthusiast
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enthusiast
Joined: Mar 2008
Posts: 216
still waiting on 684
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Quote:
Supersonic- i'd be interested to know the race weight of your car and the cam/compression combo 
Me too.Would like to know.
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Re: Guess E.T change going from 4.88 to 4.30 gears
[Re: Supersonic]
#270854
11/03/09 10:48 PM
11/03/09 10:48 PM
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Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
roadhazard
master
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master
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
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Quote:
Quote:
Quote:
Quote:
7200 running a 10.38 @ 127 with 4.88's
Was at the track sunday, the car ran 10.23 @ 129 with the 4.30's and nothing else done to the motor. Air was decent
That is a good gain. What was the sixty foot comparison? Was the weather similar on both runs?
yes, the weather was close on both of those runs. Best 60' with the 4.88 gears was a 1.46, and best with the 4.30's was a 1.42. I am running a crane cam with 700 lift. Shifting the car at 6000 now and it goes through the traps around 6500.
What Intake and Carb do you have? What does your car weigh?
We have a similar combo with similar numbers
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what cam are you running?
