87 TBI

[Captkaos]

The Holley TBI is a 2" bore, it is never going to run correctly on a stock 350, you will be getting to much air for the ECM to compensate.  You will have to burn a chip to make the Holley TBI operate correctly.

I am reading over this again to see if anything is there I missed...

[Captkaos]

If I disconnect the vac signal to the map sensor, the engine cranks for a while before starting then seems too idlle pretty good, can even rev it and hold it at whatever rpms,but then after a little bit[30 seconds to well over a couple of minutes] it just seems to shut down,,, This I can do over and over again,thinking maybe the computer needs to wake up and re calibrate itself,but this doesn't seem to be the case...

Mine was giving symptoms like this.  What happens if you hook everything up and pull the IAC connector off?   Mine ended up being a bad fuel regulator diaphram and a faulty injector.  It would idle and run fine right until I put a load on it and it would die immediately.

To get our stories straight this is what we are working with:
Old motor with previous blow head gasket, intake gasket and bad seals
Crane cam - for TBI right?
Trick flow heads - what kind of flow/compression we talking about?
Roller rockers - (adjusted properly)
Adjustable fuel regulator - (set to 13.5lbs)
New lifters and pushrods - broken in with the cam?
new Fel-pro gaskets
Timing set to 0 with bypass (10-12 while running)
No EGR
Injectors are firing ok
No vacuum leaks
All with stock TBI...

Now we are working on the same setup, but you changed to the Holley TBI right? 670cfm?

[GT1000000]

Crate motor with about 40K miles, overheated which caused initial problems
Crane for TBI,http://store.summitracing.com/partdetail.asp?part=CRN%2D114122&autoview=sku
Trick flows,http://store.summitracing.com/partdetail.asp?autofilter=1&part=TFS%2D30400005&N=700+115&autoview=sku
Roller Rockers,http://store.summitracing.com/partdetail.asp?part=SUM%2DG6905&autoview=sku,adj properly
Adjustable Regulator,NO,No,not any more...Installed Holley 670 cfm TB Complete,New,part#502-6
New Lifters & Pushrods,Yes,Lifters come with cam,Push rods are stock 7.90" long
New Fel-Pros
Timing @ 0 degrees
No EGR
New throttle body[Holley}
No vac leaks
No longer stock TBI[Holley]
 If everything is hooked up and I discionnect the IAC, I Honestly forgot what happens...
It[the truck] is currently waiting to be towed to another shop...and I don't have immediate access to it.
gt.