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Old 06-25-2016, 07:45 AM   #10
ElGracho
Gentleman Jim Driver
 
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Join Date: Nov 2002
Location: Poulsbo, WA
Posts: 1,550
Re: 87 Burb 4.8 swap

I had a similar problem with mine. Turns out I had about 3 injectors hanging open. Way way rich. I replaced them and it has run perfect since.
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Joe
'75 GMC Gentleman Jim
'84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter)
'85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans
also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed
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