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Old 01-08-2013, 11:14 PM   #1
peglegs
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Join Date: Jul 2009
Location: grants pass, oregon
Posts: 390
replacing a 305 TBI with a 96-2000 Vortec 350

Ive searched a few 100 posts & dont have all the answers yet

I have a 1987 1/2 t, 4x4, 305/400 with TBI.

Im installing a 96-2000 Vortec 350 (create motor)

I will be installing the 305 TBI on the Vortec 350

Thus far i need to change the following from 1987 305 to 1987 350

* Injectors for a 350 TBI
* 350 specific knock sensor http://www.summitracing.com/parts/smp-ks7
* 350 ESC module (HEI module) http://www.summitracing.com/parts/acc
-35362/applications/make/chevrolet/year/1987/model/r10/engine-size/5-7l-
350
* 350 chip for my computer # 1227747

Ill also need to
* Change the 305 distributer gear to a melonized gear for the Vortec roller
cam
* I purchased the Power+Plus 4 bbl manifold
http://www.summitracing.com/parts/pfs-52006/overview/ for a
96-2000 vortec 350
* I will purchase an adaptor to go from 4bbl to a center mount 3 bolt TBI carb
http://www.summitracing.com/parts/trd-2211/overview/


Questions
* changing to full length headers where is the most efficient location to weld
the sensor bung at
* instead of a chip if i aquire a computer that was installed in a 350 TBI
same service # as mine # 1227747 but had a 700r4 would the
fact that its programed for a 700r4 make it run bad ...w/o actually having
that trans? So far i cant locate my computer with a 350/400th. u have
one?
* Im a little unsure about the stock 305 distributor workn even with the new
melonized gear & the ESC module changed just feel like im missing
something here.
* the smog components will be deleted any ill effects ?does anyone have a pic of all the components that need to be eliminated?
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1990 chevy 4x4 with a 1940 IHC body

Last edited by peglegs; 01-09-2013 at 04:06 PM. Reason: additional info/questions
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