I THINK YOULL FIND THIS LINK VERY INFORMATIVE....open and read thru the linked info
http://www.circletrack.com/enginetech/c ... ady_spark/
Distributor Comparison
Timing set at 36 degrees at 5,000 rpm - Dyno Pull from 4,000 to 8,000 rpm
Low High Variance Average % Change
Crane Pro Curve Billet 30.4 37.4 7.0 34.288 4.99
Crane Pro Race 32.7 37.2 4.5 35.850 0.42
Crane Pro Race Optical 34.0 39.1 5.1 36.217 0.60
Distributor Gear Comparison
Timing set at 36 degrees at 5,000 rpm - Dyno Pull from 4,000 to 8,000 rpm
Low High Variance Average % Change
Standard Brass Gear 32.7 37.2 4.5 35.850 0.42
Brass Gear +0.020 Inch Oversize 33.6 38.7 5.1 36.196 0.54
Analog vs Digital Ignition Comparison
Timing set at 36 degrees at 5,000 rpm • Dyno Pull from 4,000 to 8,000 rpm
Low High Variance Average % Change
Race Pro w/ HI-6N (Analog) 32.7 37.2 4.5 35.850 0.42
Race Pro w/ HI-6R (Digital) 36.2 38.7 2.5 37.941 5.39
Crane Pro Curve Billet Distributor Test
Engine Configuration: V-8 - Cylinder Configuration: V-8
Cylinder Ordering: Left Bank - 1 - 3 - 5 - 7 - Right Bank - 2 - 4 - 6 - 8
Firing Order: 1 - 8 - 4 - 3 - 6 - 5 - 7 - 2
Cylinder Rotation: 0.0 - 90.0 - 180.0 - 270.0 - 360.0 - 450.0 - 540.0 - 630.0
Cylinder #1 Timing: 36.0
RPM Cyl #1 Cyl #8 Cyl #4 Cyl #3 Cyl #6 Cyl #5 Cyl #7 Cyl #2
4,000 35 36 35.4 35.2 35.4 35.8 35.4 35.2
4,100 36.1 37.1 36.3 35.6 35.7 36.3 36.1 35.7
4,200 35.6 37.1 36.6 35.6 35.6 36.4 36.1 35.6
4,300 33.5 35.6 35.5 34.7 34.6 35.2 34.9 34.4
4,400 33.4 34.4 34.2 33.8 33.5 33.7 33.7 33.8
4,500 34.1 34.4 33.4 33.1 32.8 32.8 33.2 34
4,600 35 35 33.5 33.3 33.2 33 34 34.6
4,700 34.7 35.4 34.2 34.1 33.8 34.1 34.7 34.7
4,800 34.4 35.5 34.5 34.5 34.4 34.5 34.4 34.5
4,900 34.6 35.4 34.6 34.4 34 34.5 34.2 34.4
5,000 34.8 35.4 34.7 34.1 33.7 34.7 33.9 34.4
5,100 34.7 35.4 34.7 33.7 33.8 34.7 33.6 34.3
5,200 35.3 35.3 34.3 33.5 34.4 34.7 33.6 34.7
5,300 35.4 35.2 34.4 33.6 34.4 34.9 33.5 35
5,400 34.8 35.8 34.4 33.5 35 35 33.4 35.3
5,500 34.7 35.8 34.7 33.7 34.8 34.4 33.7 35.3
5,600 34.7 35.1 34.5 34 34.5 34.1 33.9 35.1
5,700 35.1 34.4 34.4 33.6 34.5 34.2 33.4 34.9
5,800 36 34.1 34.8 33.3 34.9 34 32.9 34.9
5,900 35.5 34 35.1 33 34.6 33.6 33.2 34.9
6,000 35.8 33.5 35.4 33 34.6 33.7 33 35.3
6,100 37 32.9 36 33.3 34.8 34.7 32.3 35.8
6,200 37 32.2 36 33 34.3 35.4 31.4 35.3
6,300 37.3 32.2 36.2 33 34.2 36 31.2 35.5
6,400 37.7 31.8 36.7 32.9 34.3 37.1 31 35.8
6,500 36.3 31.6 37.8 32.1 34.7 37.3 30.6 36.7
6,600 33.9 32.7 37 31.2 35.8 36 30.7 37.4
6,700 32.5 34.9 34.6 32.3 36.6 34.2 31.8 36.9
6,800 31.9 35.3 33.9 33 36.2 33.6 32.2 36.4
6,900 30.7 35.8 33 33.2 36.1 32.7 32 36.6
7,000 31 35.5 33 33.3 35 32.6 32.5 35.3
7,100 33 34.9 33.8 33.6 33.8 33.7 33.7 33.4
7,200 33 35 33.7 33.8 33.8 33.8 34.1 33.5
7,300 32.6 34.8 33.1 33.7 33.5 32.9 34.5 33.4
7,400 32.4 35 32.9 33.3 33.7 32.9 34.2 33.3
7,500 31.7 34.3 33.1 32.6 33.5 32.6 33.6 33.1
7,600 31.1 33.7 33.4 32.2 33.1 32.5 33.4 33.4
7,700 31.1 33.9 33.6 32 33 32.8 33.3 33.5
7,800 31.3 34.2 33.4 31.8 33.2 32.9 33 33.5
7,900 31.5 34.1 33.4 31.9 33.2 33.1 33.1 33.9
8,000 31.6 34.2 34 31.7 33.5 32.2 33.6 33.9
Read more: http://www.circletrack.com/enginetech/c ... z2RRCNGoRr
http://www.circletrack.com/enginetech/c ... ady_spark/
Distributor Comparison
Timing set at 36 degrees at 5,000 rpm - Dyno Pull from 4,000 to 8,000 rpm
Low High Variance Average % Change
Crane Pro Curve Billet 30.4 37.4 7.0 34.288 4.99
Crane Pro Race 32.7 37.2 4.5 35.850 0.42
Crane Pro Race Optical 34.0 39.1 5.1 36.217 0.60
Distributor Gear Comparison
Timing set at 36 degrees at 5,000 rpm - Dyno Pull from 4,000 to 8,000 rpm
Low High Variance Average % Change
Standard Brass Gear 32.7 37.2 4.5 35.850 0.42
Brass Gear +0.020 Inch Oversize 33.6 38.7 5.1 36.196 0.54
Analog vs Digital Ignition Comparison
Timing set at 36 degrees at 5,000 rpm • Dyno Pull from 4,000 to 8,000 rpm
Low High Variance Average % Change
Race Pro w/ HI-6N (Analog) 32.7 37.2 4.5 35.850 0.42
Race Pro w/ HI-6R (Digital) 36.2 38.7 2.5 37.941 5.39
Crane Pro Curve Billet Distributor Test
Engine Configuration: V-8 - Cylinder Configuration: V-8
Cylinder Ordering: Left Bank - 1 - 3 - 5 - 7 - Right Bank - 2 - 4 - 6 - 8
Firing Order: 1 - 8 - 4 - 3 - 6 - 5 - 7 - 2
Cylinder Rotation: 0.0 - 90.0 - 180.0 - 270.0 - 360.0 - 450.0 - 540.0 - 630.0
Cylinder #1 Timing: 36.0
RPM Cyl #1 Cyl #8 Cyl #4 Cyl #3 Cyl #6 Cyl #5 Cyl #7 Cyl #2
4,000 35 36 35.4 35.2 35.4 35.8 35.4 35.2
4,100 36.1 37.1 36.3 35.6 35.7 36.3 36.1 35.7
4,200 35.6 37.1 36.6 35.6 35.6 36.4 36.1 35.6
4,300 33.5 35.6 35.5 34.7 34.6 35.2 34.9 34.4
4,400 33.4 34.4 34.2 33.8 33.5 33.7 33.7 33.8
4,500 34.1 34.4 33.4 33.1 32.8 32.8 33.2 34
4,600 35 35 33.5 33.3 33.2 33 34 34.6
4,700 34.7 35.4 34.2 34.1 33.8 34.1 34.7 34.7
4,800 34.4 35.5 34.5 34.5 34.4 34.5 34.4 34.5
4,900 34.6 35.4 34.6 34.4 34 34.5 34.2 34.4
5,000 34.8 35.4 34.7 34.1 33.7 34.7 33.9 34.4
5,100 34.7 35.4 34.7 33.7 33.8 34.7 33.6 34.3
5,200 35.3 35.3 34.3 33.5 34.4 34.7 33.6 34.7
5,300 35.4 35.2 34.4 33.6 34.4 34.9 33.5 35
5,400 34.8 35.8 34.4 33.5 35 35 33.4 35.3
5,500 34.7 35.8 34.7 33.7 34.8 34.4 33.7 35.3
5,600 34.7 35.1 34.5 34 34.5 34.1 33.9 35.1
5,700 35.1 34.4 34.4 33.6 34.5 34.2 33.4 34.9
5,800 36 34.1 34.8 33.3 34.9 34 32.9 34.9
5,900 35.5 34 35.1 33 34.6 33.6 33.2 34.9
6,000 35.8 33.5 35.4 33 34.6 33.7 33 35.3
6,100 37 32.9 36 33.3 34.8 34.7 32.3 35.8
6,200 37 32.2 36 33 34.3 35.4 31.4 35.3
6,300 37.3 32.2 36.2 33 34.2 36 31.2 35.5
6,400 37.7 31.8 36.7 32.9 34.3 37.1 31 35.8
6,500 36.3 31.6 37.8 32.1 34.7 37.3 30.6 36.7
6,600 33.9 32.7 37 31.2 35.8 36 30.7 37.4
6,700 32.5 34.9 34.6 32.3 36.6 34.2 31.8 36.9
6,800 31.9 35.3 33.9 33 36.2 33.6 32.2 36.4
6,900 30.7 35.8 33 33.2 36.1 32.7 32 36.6
7,000 31 35.5 33 33.3 35 32.6 32.5 35.3
7,100 33 34.9 33.8 33.6 33.8 33.7 33.7 33.4
7,200 33 35 33.7 33.8 33.8 33.8 34.1 33.5
7,300 32.6 34.8 33.1 33.7 33.5 32.9 34.5 33.4
7,400 32.4 35 32.9 33.3 33.7 32.9 34.2 33.3
7,500 31.7 34.3 33.1 32.6 33.5 32.6 33.6 33.1
7,600 31.1 33.7 33.4 32.2 33.1 32.5 33.4 33.4
7,700 31.1 33.9 33.6 32 33 32.8 33.3 33.5
7,800 31.3 34.2 33.4 31.8 33.2 32.9 33 33.5
7,900 31.5 34.1 33.4 31.9 33.2 33.1 33.1 33.9
8,000 31.6 34.2 34 31.7 33.5 32.2 33.6 33.9
Read more: http://www.circletrack.com/enginetech/c ... z2RRCNGoRr