diablizzard

iTrader: (2)

I'm about to start up my 94 LT1 that I swapped into my 86. It has a little higher compression with AI heads and cam. I'm a little nervous about the initial start up and don't want it to run too lean. does anybody have some general guidelines that may help? I'm using tuner cats. Thanks in advance.

Dave357LT1

Contact someone who does and get mail order tune and tweak that!

bowtienut

iTrader: (1)

What program are you staring with? What CR? What are the cam specs?
Those will dicate initial changes to the timing tables.
For mixture, as long as the program wasn't previously hacked and all sensors are funtioning, then a MAF car will be OK to run at low power levels on the present tune to drive it around and get to a dyno for a real tune.

diablizzard

iTrader: (2)

AI's 228 cam with LSA of 108* compression about 11:1
I haven't been able to pull the stock tune, because I haven't much time to do it yet. I can PM you if you need more exact info

diablizzard

iTrader: (2)

I found time. The car starts but it won't stay running. As far as I can tell, I don't have any vaccuum leaks.

bowtienut

iTrader: (1)

I just replied to your PM on 3rdGen.

BIGCAT7274

what the min. rpm it will idle clean at?

diablizzard

iTrader: (2)

it'll try to idle at 600ish for a second then it dies. This is an LT1 swap into a 3rd gen. It threw DTC 22 for a low voltage TPS. I traced it to a short cut that the maker of the harness performed. I unscrewed the mess up and am going to try it again. I hope I don't have to completely remake my wire harness. We'll see how it goes in a couple hours.

I emailed you Bow Tie

bowtienut

iTrader: (1)

6XX rpm is way too low to expect it to idle with that cam.
I'm probably running your same cam and I think mine is set at 900; looks to be 950-1000 on the factory tach.

diablizzard

iTrader: (2)

turns out that the TPS was still bad and the "stock" tune that I pulled was seriously messed up. New TPS and someone elses stock tune. Now it idles.