Hot Rod - - Are Carbs Still King? -

The Hol­ley dual-plane in­take of­fered iden­ti­cal peak power num­bers as the Edel­brock but edged out the Per­former RPM in torque pro­duc­tion.

Like the Edel­brock, the dual-plane Hol­ley of­fered ex­cep­tional low-speed torque, but lacked the top-end charge of the sin­gle planes. Run on a smaller LS3-headed com­bi­na­tion, the dual-plane Hol­ley would be ex­cel­lent for a street car or truck. Equipped with the Hol­ley dual plane, the 415 LS3 stro­ker pro­duced 615 hp and 551 lb-ft of torque. Mea­sured at 4,000 rpm, the Hol­ley topped all of the in­takes tested by pro­duc­ing 536 lb-ft of torque.

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