found problem, still need help, engine specs

[steve1ph]

discovered where the high idle is coming from. you could hear some major sucking while the motor was running thats when i started spraying the chemtool looking for the leak the reason it wasnt dected is cause it was the tb which had the breather tube connected. i pulled off the the breather tube and put my hand over the bores and it was such a powerful suck i couldnt even get my hand off, ( well sorta of ) anyhow i was able to regulate the idle with the amount of air i let thru with my fingers. keep in mind the butter flies are completely closed. the vacume was coming from the bottom hole in between the blades . as far as i can tell this is the air idle controll passage. so now what? how can i regulate the suck of the aic? when i get that done then back to the dyno and some pics i will try to post. getting closer. heres the run down on my motor. 383 stroker, 224/230 duration 503/510 lift cam, stock heads stiffer springs bronz guides 3 angle valve job, super ram intake ( intake, runners, pleneum). 58mm tb, 36# injectors, breathless ram air, msd 6A ignition, msd cap, rotor, 8.5mm wires, headman ceramic coated long tube headers , center force 2 duel friction clutch, gutted cat, borla out back, stock rear end and a bag of chips.

 

[jsinga]

you're right, sounds like your IAC is out of wack. sometimes the pintle doesn't get repositioned like it's supposed to I think there is a proceedure in the shop manual to get it right. As many mods as you have you might need to get your prom worked on.

JS

 

[WhalePirot]

"get your prom worked on"

This has been replied to in many threads. I hope you are reading the replies to your posts.

Your injectors are WAY TOO BIG for your engine and that is why you are running rich. Also, your low vacuum is feeding faulty information to the ECM.

Until you downsize the injectors and get a proper chip, which Hib refers to as calibration, you can look everywhere, replace all sensors and adjust everything until you get fed up and sell the car.

The best way to quiet that sucking sound is to shut off the engine. Mine sounds like that, when running, with the 'snorkle ' removed OR with a cone air filter..