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Originally Posted by Glenn
Brian, the extra performance achieved from the improved design is also a major consideration in spite of the flow. Another reason that I like these heads is the abiltiy to have 10+ compression on 89-91 octane gas and to run cooler.
Here are the results flow results of the out of the box ready to use Edelbrock Pontiac E-Head tested on the same flow bench.
Int.
Lift
.100 66.7
.200 140.9
.300 204.6
.400 251.0
.500 281.7
.600 294.3
.700 299.4
Exh.
.100 54.8
.200 115.8
.300 152.7
.400 181.9
.500 198.1
.600 206.0
.700 211.2
The KRE heads were tapped out at the .600 lift and the Edelbrock heads were still coming on at .700. As you can see the flow at the lower ranges are fairly close, but at .400 the Edelbrock flow numbers rapidly increase while the KRE start to go flat. Again, that really becomes obvious looking at both on a graph.
My question, why haven't we seen any of these comparisons done in any of the Pontiac magazines, using both flow results and actual drag strip times on the same car? I can only guess. Maybe there has been, and I just missed it.
But as Jeff Kauffman said and which is true, we race cars and not test benches.
Also, Jim Hand switched back using his 6X-4 and doesn't use the KRE's anymore.
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These are the numbers on my 310s from Kauffman.
.100 81 67
.200 156 128
.300 221 174
.400 274 212
.500 300 238
.600 311 247
.700 313 251
Interesting to compare but probably nearly useless information.