Quote:
Originally Posted by GmtGmt
can a computer and wiring harness from an early Astro van be used?
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Yes, Astro Van used 4.3L V6 and TBI injection which was controlled by 1227747 ECM - same as in C/K trucks. The harness length and layout is a bit different, but with a little bit of work it can be adapted. Now - if you are planning to use 4.3 (V6) TBI setup on 5.0 or 5.7 V8 you'll have to make several changes.
1) In the ECM EPROM and NETRES must be from V8 vehicle that best matches your engine (i.e 5.0 to 305; 5.7 to 350). It is easier to find matching ECM from V8 truck with correct calibration.
2) distributor must be from V8.
3) Injectors - 4.3L V6 used 46 lb-Hr injectors; 5.0L 55 lb-hr and 5.7L are 62 lb-hr.
4) KS and ESC module - should be of a V8 flavor.
//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)