i just got i 1989 tpi gta was told its a 383 stroker motor it still has the tune port on it i cant get it to run right set tps set idel and iac new plugs wires cap but once care warms up it has a miss and if i shut it down it wont start back i can spray starter fluid in it and it starts back sill has miss or if i wait about 15min it starts back on its own so can any one tell me what im lookin for here im not new to motors just new to this computer car stuff

 

Lots of things to start looking at.
Fuel psi. 43psi
If the injs are stock multecs ohm test them cold and hot. (my guess on your prob)
pull plugs make sure they are ok.
check plug wires 4 signs of burns or arc ing.
If plugs and things are ok do a compresion test.
You can also check the rocker arms for correct adjustment.
soooo many things to check but bottom line is its really not much diff than a reg carbed motor..
start with the basics and do yourself a favor, get a factory service manual waaay better than guessing the problem over the net! good luck with your project!

 

Really sounds like injectors. I just had the exact same issues and that was the problem for me. Start there.

 

your trying to run this motor on a factory tune... and what injectors are in this 383

 

The motor will start and run on a factory tune with close to stock inj sizes.
Start by checking your injs..

 

I second or third on injectors. They are not bad to take out as long as you are careful with the O-rings. You may have a place locally to test them. A node light may also be able to help test the injectors.

 

yes... we know it will start and run... it's after the fact 1/2 & full throttle
runs... won't work out so nice

 

Yup true story.
I have a 11.7-1comp 4xx ci sbc under 235 afrs an a solid roller cam. I have 4,000 miles on it... 24# injs and a handfull of runs 2 8k, not wot tho..
All this with........... stock 89 350 tune in the chip!
Yes I need to/will tune it... as soon as my bud is done using the 60#injs I have 4 it.. ps im sure the plugs are cleeeeeeeean!
Def not the correct way to do things but Im sure he'll be fine until he figures out the prob.

 

yeah injectors is what i was afraid of been there befor on a iroc so not to bad and yeah its a factory tune far as i know injectors look to be bosh lll but not sure how much bigger than 19psi they are if any intake runners and all that have been ported nwe plugs new wires cap so on ohm injectores and came up with an 8 6 5 so 3 are bad ima replace them all thanks for the help guys

 

by the way what size injectors should i be lookin to run in this car

 

Probably 24lb