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rfmaster · 02-25-2009, 01:38 AM

Goble

To swap in BBC you'll need BBC TBI, radiator, etc. Same 1227747 ECM was used to control some BBC TBI applications, but EPROM is different. Also BBC TBI is bigger (52mm vs. 47) and used 90 lb/HR vs. 62 lb/HR injectors used with 350 CID TB.

Harness is the same.

Find a complete BBC donor and do a direct swap - this will make your swap easier. Also, heavy duty BBC did not use knock sensor (KS) - these HD applications used 1228747 ECM. 1228747 had a very conservative spark advance to keep engine from pinging (no KS )

//RF

02-25-2009, 01:38 AM	#3
rfmaster Registered User Join Date: Oct 2003 Location: OC CA Posts: 1,374	Re: swap Goble To swap in BBC you'll need BBC TBI, radiator, etc. Same 1227747 ECM was used to control some BBC TBI applications, but EPROM is different. Also BBC TBI is bigger (52mm vs. 47) and used 90 lb/HR vs. 62 lb/HR injectors used with 350 CID TB. Harness is the same. Find a complete BBC donor and do a direct swap - this will make your swap easier. Also, heavy duty BBC did not use knock sensor (KS) - these HD applications used 1228747 ECM. 1228747 had a very conservative spark advance to keep engine from pinging (no KS ) //RF __________________ "The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17)