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Looks good on paper but in the real world it has been proven again and again that they are little or no better than the cast intake in most cases. They work well as a cheap up grade to a 4 barrel for like we used to do on a lot of 318 trucks back in the 70's. Cheaper than the OEM manifolds and lighter. To each their own.



on a stock long block 360 w/a comp XE262 Dulcich actually saw ~ 3HP less with a performer over a stock early 80's 360 spreadbore manifold, similar peak torque numbers, but the performer had about a 10 lb-ft advantage below 3000 RPM.

1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)