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Manifold Dyno Test
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DRR Pro
Picture of SpeierRacingHeads
posted
Chris Cobb at DynoTune put in some major effort so it worth a post to show some interesting results. Chris did a dyno test of different SBC manifolds, most ported and an as-cast Pro-Filer/Wilson. I as well as Eric Weigartner offered manifolds and a local to Chris ported up a 2970 as well.

The engine:
421 SBC
AFR 220 CNC
259/263 108 LSA
.626/.626 gross lift
104 ICL
10.5 compression
93 Octaine

The manifolds:
Edelbrock 2892 by Weingartner (sweep 6)
Pro-Filer ASCAST (sweep 12)
Edelbrock 2970 by local porter (sweep 15)
Motown 4150 by Weingartner (sweep 18)
Holley 300-110 w/SRH plenum mod (sweep 21)
Holley 300-25 by SRH with BURR (sweep 25)
Edelbrock 2925 w/SRH plenum Mod (sweep 27)

 
Posts: 1284 | Location: Hays Kansas | Registered: January 23, 2006Reply With QuoteReport This Post
DRR Pro
Picture of SpeierRacingHeads
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Weingartner Motown



Weingartner 2892



Local 2970



My 300-25



My 300-110 PM

 
Posts: 1284 | Location: Hays Kansas | Registered: January 23, 2006Reply With QuoteReport This Post
DRR Pro
Picture of SpeierRacingHeads
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as-cast Pro-Filer/Wilson

 
Posts: 1284 | Location: Hays Kansas | Registered: January 23, 2006Reply With QuoteReport This Post
DRR Sportsman
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Eric did a 2892 for me 4 years ago porting the toilet and primer plus plate also. Very happy with the results.
 
Posts: 673 | Location: 53056 | Registered: December 30, 2009Reply With QuoteReport This Post
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