Hi all.
Some of you have been following some of my post's.Those who have...well please try to wake up.
Those who haven't ...I have been experimenting with a 92 vortec with cpi.
I rebuilt the engine and installed a modified tbi system which ran decently but I felt it was wrong for the cam and heads.So I bought new parts and switched back to the cpi system.I think the tbi is better for low end torque but the cpi does pretty good out on the road too.Once I get things straightened out better I'll check the mileage.
Can any one tell me what the idle should be cold,warm,then normal?
I know the tbi norm is 550 rpms in park.
My cpi is about 720 rpms in park.Makes a heck of a clang bang when dropped into gear.Also shift very harshly after long and drawn out.With the tbi it shifted nicely about 11-13 mph.Now is winds up to about 22-25.....BANG!!!
No vacuum leaks and the cable if free.Even checked it with vacuum pluged and cables off.Timing is @ 0 tdc.
Does not appear to have the idle adjuster tampered with.Although I am considering it.
What else could it be guy's?

 

*Thread Closed - Double Post* - Please keep the discussion in the thread you already have discussing your mongrel of a system. I am moving PF's response into THIS THREAD.