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Old 01-24-2008, 05:29 AM   #1
crm318
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Join Date: Mar 2004
Location: Midland, Texas
Posts: 1,672
motor misses at highway speed

i notice that lately when i get on the highway for about 5 min or more, my motor starts to have a low drone and loss of power. i can tell that its not firing on all 8 at that point. i then pulled over at a gas staion to see if there is a burned wire arcing on the header which i has done before. everything was in check. i got back on the highway and it was good for another 5 min before it resumed missing. what could cause this? the i also heard a clicking coming from the pass. valve cover.
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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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