I have a

Red 91 5.0 Camaro TBI no interior new engine harness new dash and inside harness , engine is fine, on blocks

White 92 3.6 Camaro TBI everything is fine except for after driving 120 miles back and forth to school, wouldnt go above 30mph without reving up all the way, drives in second, I was told this was the trans

Blue 85 5.0 Firebird TPI - This one is tricky drove it about 40 miles and tried to start again, started to jerk alot, looked under the hood

EST was disconnect, two vacuum lines where not capped right, a connector behind the vacuum canister was disconnected, air filter was not on right, smell and oil leak,

It wont idle in park but will in drive, when you take you foot of the gas it stalls out, when stopping it stalls out, will idle manually in park and drive.

Pulled codes 13, 22, 32, 33, 45 does five codes mean the problems are not very big??

Which parts from my white and red car are interchangable?

This weekend im going to change the trans and engine oil.

Besides that where should I start???