iFrye38

Hello, I have a huge problem here! I actually don't have a 91 camaro but a 79 and did a TPI swap on it. I bought the intake up from an 89 Trans Am, only 65k on it. Bought everything new, Fuel pump, harness, every sensor, fuel pressure regulator, new distributor, coil, spark plug wires ect. ect. Also have a new Prom chip custom made, deleting smog stuff... ie canister purge, air pump ect.

Ecm and harness is a 90-92 speed density NOT MAF---- So I DO have the MAP sensor......

Haven't done any major performance add ons, just aluminum roller rocker arms and long tube headers. (have a heated o2 just at the end of the collector)

When i first attempted to start it after installing everything the engine was flooding to the point where there was fuel in the oil pan. (yes it was fuel not coolant, you can smell the fuel after it was drained)
Went through and replaced ALL sensors! replaced the IAT and coolant temp sensor(figured the ecm thought it was running cold, threw off everything else) Replaced TPS (found deadspot about half throttle) Re-replaced the MAP sensor (bought new originally) and also the IAC,(was completely black and valve didn't open or close) also during that time there was and still is a violent sucking from where the opening is for the iac between the butterflies.

After all this still was running rich and was throwing codes left and right.. only thing i could think of was a bad ECM because there was no way everything wasn't working brand new.. Got a new ECM, installed it and boom.... starts running normally, no smoke and no fuel at plugs.

As ive gone through now, tuning, getting idle and timing right I ran into more problems.. Had my scanner hooked up and the IAC wasn't responding, bought a new one and threw that in there and worked then.

Now to the problem at least currently.. I have finally got it running now, not too rich or too lean. Have the timing at 6 degrees. Injectors working properly, the idle is set to about 850 rpm in Park/N. But when i drop it into gear it goes to 250 and immediately dies. BEFORE I had this problem i was doing my test drives to make sure things were running properly... It was about 800-900 idle and 650ish in drive, but I had NO POWER under a load. When in park hitting WOT or close it would roar but in drive it would just sit there.. until about 2nd gear when it starting picking up speed.. HAve no idea where to go now or what to do! I REALLY NEED SOME HELP HERE PLEASE! I've been talking to Certified GM mechanics, close gear head friends, ect, and no one knows what is going on. I'm doing it all myself and am reaching a point to take it off and sell it.. been sitting for 6 months. Help me out please

iFrye38

ALSO... for the record. NO CODES PRESENT! I have nothing pop up.. I do have a scanner, so i can read what everything is doing.

408supert10

What size Torque Converter do you have...And what size Camshaft do you have...If they are not matched up it will kill the motor when you put it in drive...like stock cam and 3500 stall can bring motor down