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Re: 60 ft calculation
[Re: B3422W5]
#1883033
08/01/15 07:02 PM
08/01/15 07:02 PM
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Joined: Jan 2003
Posts: 16,932
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,932
NC
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I disagree that 1.38 equates to 10.20.. .... Way to many variables involved to make that statement.
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.Compression, suspension, weight, and other factors contribute as well. That is all true. But IMO, for typical cars 2800-3400 lbs, 9.0-12.0 ET, normally aspirated, no power adders, etc. This equation is a good "target" for the sixty foot. If a car has worse sixty, a converter or gear change may be in order (or other things). Some chassis actually do better, but it may be a case of lots of torque but not enough top end HP (mph). Some bracket racers are not setup to 60ft well, but to just hook up easily and they shoe polish the ET. Target Sixty Ft = ET x 0.12 + 0.17 9.0 -> 1.25 9.5 -> 1.31 10.2 ->1.39 10.5 ->1.43 11.0 ->1.49 12.0 ->1.61 Wallace is about the same at the mid-lower ET, and slower Sixty ft at the higher ET.
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Re: 60 ft calculation
[Re: 440Jim]
#1883173
08/01/15 11:33 PM
08/01/15 11:33 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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I disagree that 1.38 equates to 10.20.. .... Way to many variables involved to make that statement.
.
.
.Compression, suspension, weight, and other factors contribute as well. That is all true. But IMO, for typical cars 2800-3400 lbs, 9.0-12.0 ET, normally aspirated, no power adders, etc. This equation is a good "target" for the sixty foot. If a car has worse sixty, a converter or gear change may be in order (or other things). Some chassis actually do better, but it may be a case of lots of torque but not enough top end HP (mph). Some bracket racers are not setup to 60ft well, but to just hook up easily and they shoe polish the ET. Target Sixty Ft = ET x 0.12 + 0.17 9.0 -> 1.25 9.5 -> 1.31 10.2 ->1.39 10.5 ->1.43 11.0 ->1.49 12.0 ->1.61 Wallace is about the same at the mid-lower ET, and slower Sixty ft at the higher ET. I still use the 60' X 1.56 
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Re: 60 ft calculation
[Re: MR_P_BODY]
#1883320
08/02/15 03:20 AM
08/02/15 03:20 AM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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I disagree that 1.38 equates to 10.20.. .... Way to many variables involved to make that statement.
.
.
.Compression, suspension, weight, and other factors contribute as well. That is all true. But IMO, for typical cars 2800-3400 lbs, 9.0-12.0 ET, normally aspirated, no power adders, etc. This equation is a good "target" for the sixty foot. If a car has worse sixty, a converter or gear change may be in order (or other things). Some chassis actually do better, but it may be a case of lots of torque but not enough top end HP (mph). Some bracket racers are not setup to 60ft well, but to just hook up easily and they shoe polish the ET. Target Sixty Ft = ET x 0.12 + 0.17 9.0 -> 1.25 9.5 -> 1.31 10.2 ->1.39 10.5 ->1.43 11.0 ->1.49 12.0 ->1.61 Wallace is about the same at the mid-lower ET, and slower Sixty ft at the higher ET. I still use the 60' X 1.56 No you don't... That's the 1/8 mile to 1/4 mile conversion number "1.56". No problem there brother though.
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Re: 60 ft calculation
[Re: Sport440]
#1883409
08/02/15 10:52 AM
08/02/15 10:52 AM
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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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I disagree that 1.38 equates to 10.20.. .... Way to many variables involved to make that statement.
.
.
.Compression, suspension, weight, and other factors contribute as well. That is all true. But IMO, for typical cars 2800-3400 lbs, 9.0-12.0 ET, normally aspirated, no power adders, etc. This equation is a good "target" for the sixty foot. If a car has worse sixty, a converter or gear change may be in order (or other things). Some chassis actually do better, but it may be a case of lots of torque but not enough top end HP (mph). Some bracket racers are not setup to 60ft well, but to just hook up easily and they shoe polish the ET. Target Sixty Ft = ET x 0.12 + 0.17 9.0 -> 1.25 9.5 -> 1.31 10.2 ->1.39 10.5 ->1.43 11.0 ->1.49 12.0 ->1.61 Wallace is about the same at the mid-lower ET, and slower Sixty ft at the higher ET. I still use the 60' X 1.56 No you don't... That's the 1/8 mile to 1/4 mile conversion number "1.56". No problem there brother though. My error.... was thinking 1/8....... but yet I still wrote down 60... brain dead
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Re: 60 ft calculation
[Re: dodgeram1998]
#1883428
08/02/15 11:40 AM
08/02/15 11:40 AM
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Joined: Mar 2006
Posts: 9,883
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,883
MI, usa
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Use the 330. 60ft could be anywhere depending on many factors. Converter, SLR, carb, intake plenum, cam. Heck I've run 9.1X @ 1.32 and 9.2X @ 1.37. The thing mine will catch most cars with a similar ET by 330. Then the numbers line up after that, 330,660,1000,1320.
Doug
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Re: 60 ft calculation
[Re: dodgeram1998]
#1884253
08/03/15 01:23 PM
08/03/15 01:23 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 will recheck the timing for good measure (gear drive). I have only whacked the throttle up to say 2000 rpm in setting the timing.
Whats strange is the car saw no time slip change with short shifting at 6700 or 6000, jet change, only timing change from 42 down to 36 netted me a minus .5 mile an hour
Gonna be looking at the burn at the ground strap on the plugs next if there hot enough Is this a "real" e-85 carb w/proper sized passages and main wells or a conversion.....
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: 60 ft calculation
[Re: dodgeram1998]
#1885560
08/05/15 01:10 PM
08/05/15 01:10 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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this was a conversion holley blocks in addition a unstable fuel supply.
pump , regulator and recipe changes have been made. Now I understand............. 
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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