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Chad, will you be testing them all in as-cast then again after you rework them?

which, in order, flow best etc as-cast, then after reworked?


thanks ;)
 

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Discussion Starter #3
Chad, will you be testing them all in as-cast then again after you rework them?

which, in order, flow best etc as-cast, then after reworked?


thanks ;)
No, I wont be doing any as-cast testing. The ONLY unported manifold I like is the Holley 300-25. The rest need work!

We need to pick a combo before I could list them in ported shape..
 

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My kind of man-jewelry. :yes::yes::yes:
 

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They all look so simular, like they were all made at the same place, just wonder how close they really are top and bottom end. Hmmm.
 

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No, I wont be doing any as-cast testing. The ONLY unported manifold I like is the Holley 300-25. The rest need work!

We need to pick a combo before I could list them in ported shape..
Agree 1000000%

Al

Great post.
 

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Discussion Starter #8
Sizes. Measure in middle of opening and lengths in middle of runner.

Holley 300-110
inner runner: 2.94 CSA, 4.625 long
outer runner: 3.36 CSA, 5.50 long

Edelbrock 2925
inner runner: 2.89 CSA, 5.58 long
outer runner: 2.85 CSA, 6.56 long

Edelbrock 2970
inner runner: 3.26 CSA, 5.525 long
outer runner: 3.29 CSA, 6.54 long

Edelbrock 2892
inner runner: 3.58 CSA, 5.42 long
outer runner: 3.66 CSA, 6.30 long

Hurricane (Bowtie)
inner runner: 3.34 CSA, 5.54 long
outer runner: 3.70 CSA, 6.42 long

Holley 300-25
inner runner: 3.34 CSA, 4.38 long
outer runner: 3.45 CSA, 5.025 long
 

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Sizes. Measure in middle of opening and lengths in middle of runner.

Holley 300-110
inner runner: 2.94 CSA, 4.625 long
outer runner: 3.36 CSA, 5.50 long

Edelbrock 2925
inner runner: 2.89 CSA, 5.58 long
outer runner: 2.85 CSA, 6.56 long

Edelbrock 2970
inner runner: 3.26 CSA, 5.525 long
outer runner: 3.29 CSA, 6.54 long

Edelbrock 2892
inner runner: 3.58 CSA, 5.42 long
outer runner: 3.66 CSA, 6.30 long

Hurricane (Bowtie)
inner runner: 3.34 CSA, 5.54 long
outer runner: 3.70 CSA, 6.42 long

Holley 300-25
inner runner: 3.34 CSA, 4.38 long
outer runner: 3.45 CSA, 5.025 long
The first Holley and Edelbrock are comparable to each other but not the others and the other 4 are closer to each other..but as we know runner length alone doesn't make an intake, but helps.
 
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