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Old 03-29-2008, 12:13 PM   #1
crm318
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Join Date: Mar 2004
Location: Midland, Texas
Posts: 1,672
iron intake or performer for best MPG

i have a 78 swb chevy sport van that im trying to squeeze every last MPG out of. it has a goodwrench 350 in it and i was wondering which intake yielded the best MPG. i saw a goodwrench 350 buildup on one of the chevy publications and they said that what the performer made in hp, it lost in tq. the iron intake is a pre-emission intake.
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1972 Cheyenne
Chevrolet red and white
357ci, Vortec heads,
GM Performance high rise intake,
Comp 268H .454/.454 218/218 110 LSA
Quadrajet carb, Flowtech headers, 2.25 40 series
HEI, Curve kit, TH 350, 3.07 gears
275/60/15s on 15x8 rallies
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