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JJLT1 · 10-04-2014, 06:52 AM

4-6* BTDC is usually purty safe, try a little at a time, and listen for pingin and rattlin..
I ran my 89/90 like that for years, but it did not like cheap gas, good 87 was ok..

10-04-2014, 06:52 AM	#2
JJLT1 Registered User Join Date: Sep 2009 Location: South of HoustonTX. Posts: 148	Re: 1990 TBI timing question. 4-6* BTDC is usually purty safe, try a little at a time, and listen for pingin and rattlin.. I ran my 89/90 like that for years, but it did not like cheap gas, good 87 was ok.. __________________ JJ 71 SWB 360 Th400 4.56