Comprehensive Cooling summation.

Subject: Comprehensive Cooling summation.

From: Paul

Date: 9/28/1999, 10:44 AM

To: zz

These appear to be sized for NASCAR HP levels
of around 600 HP.

http://www.stewartcomponents.com

I guess one could adapt one of these
pumps but surely there is something smaller
out there that would work. Anybody have any
other ideas.

Paul Lamar
 
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Stewart-wbpage.htm

Stewart vs. Edelbrock Comparison

P.O. Box 5523
High Point, NC 27262
24 Hour Order Line - 1-800-334-7946
Tech Support - (336) 889-8789
Fax - (336) 887-8988
Email - HSTEW0956@aol.com

Stewart vs. Edelbrock Comparison

Recent laboratory testing revealed the latest design of the Stewart Stage 4 DRV-8 Chevrolet small block water pump compared to the pump Edelbrock offers:

```
93% more pressure @ 6,000 RPM
```
```
39% more flow @ 6,000 RPM
```
```
60% less horsepower loss @ 100 GPM
```

Stewart is the overwhelming choice of NASACAR Winston Cup teams. In fact, Winston cup engine builders choose the Stewart design over Edelbrock 42 to 1.

Stewart Stage 1 pumps, which cost only $69.95 mail order, also out perform the Edelbrock. The same laboratory tests proved the Stewart Stage 1 water pump for the Chevrolet small block compared to the Edelbrock pump offers:

```
67% more pressure @ 6,000 RPM
```
```
29% more flow @ 6,000 RPM
```
```
47% less horsepower loss @ 100 GPM
```

Stewart pumps have a 1 year guarantee and are serial numbered to assure properly documented quality control. Edelbrock pumps are not serial numbered and have no advertised guarantee.

Stewart Stage 1 part number 12105 for Chevrolet small block compared to the Edelbrock pump under identical conditions:

200 F water, 20 PSI system pressure at pump inlet, restriction equal to 20 PSI at 100 GPM, (full size hoses, no restrictors, 2 row single pass radiator, -12 AN lines from rear of heads)

Flow in GPM
(gallons per minute)

RPM	Edelbrock	Stewart Stage 1
1000	17	18
1500	25	32
2000	34	42
2500	42	55
3000	51	65
3500	59	77
4000	68	90
4500	76	101
5000	85	112
5500	93	122
6000	102	132
6500	110	138
7000	119	148
7500	127	157
8000	139	158

Stewart Stage 4 DRV-8 3rd design for Chevrolet small block Winston cup compared to the Edelbrock pump under identical conditions:

200 F water, 20 PSI system pressure at pump inlet, restriction equal to 20 PSI at 100 GPM, (full size hoses, no restrictors, 2 row single pass radiator, -12 AN lines from rear of heads)

Flow in GPM
(gallons per minute)

RPM	Edelbrock	Stewart DRV-8
1,500	25	34
2,000	34	47
2,500	42	55
3,000	51	69
3,500	59	81
4,000	68	92
4,500	76	106
5,000	85	117
5,500	93	132
6,000	102	142
6,500	110	154
7,000	119	162
7,500	127	174
8000	136	180

Stewart Stage 4 DRV-8 3rd design for Chevrolet small block Winston Cup compared to the Edelbrock pump under identical conditions:

200 F water, 20 PSI system pressure at pump inlet, restriction equal to 20 PSI at 100 GPM, (full size hoses, no restrictors, 2 row single pass radiator, -12 AN lines from rear of heads)

Power Requirement in Horsepower
(gallons per minute)

GPM	Edelbrock	Stewart DRV-8
10	.03	.02
20	.11	.08
30	.29	.17
40	.69	.30
50	.96	.47
60	1.65	.84
70	2.44	1.11
80	3.66	1.63
90	5.62	2.26
100	7.20	2.90
110	9.40	3.51
120	11.49	4.61
130	14.30	5.60
140	n/a*	7.20
150	n/a*	8.80
160	n/a*	11.00
170	n/a*	13.09

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