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Old 05-18-2023   #10
WARP TEN
 
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Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,036
Default Re: Still chasing poor running

You said you sent the ecm to Marc Haibeck and he said it was fine. Any thought of sending the whole car to him for a thorough going over? Marc has a history of discovering problems and solutions for them that few others could come up with. Had our regular lunch with him recently and he recounted a long ago situation of a 415 car that was running rough not putting out the power expected of it. A dismantling of the engine showed that it had not only been severely overheated at one point, warping cylinder liners, but also was not a 415 at all but a much lower displacement engine. Not suggesting you have such a problem, but Marc has had a pretty good track record of solving problems that others can't. We fairly regularly hear such stories from him. Anyway, just a thought, although I know it's a tough decision being a bit far from his Chicago area shop. Still, lots of good advice here from our very experienced forum members. Good luck with it. -Bob
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2016 Long Beach Red Z06 #10281 "POPS Z"
1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts
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1993 Quasar Blue #161 "HIL KING"
--Sold but still running strong, now with more than 120,000 miles
1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd
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