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Old 09-18-2006, 08:44 AM
NR-Paul NR-Paul is offline
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high rpm lean

Needles and seats for Q-jets come in different diameters. In the Doug Roe Q-Jet book there is a section on drag racing where the seats are progressively changed to smaller ones until a lean surge is achieved.

Not sure what Edelbrock is using but at one time four or five different diameter seats were available from GM.

Paul S
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