i currently have a 305 in my firebird and my friends dad has a 1989 silverado 5.7 (350) he wants 2 sell me. So i am curious if the T5 trans willl bolt up to the silverado motor and will the tpi intake fit on the silverado motor and will everything work just fine cuz i dont wanna buy this motor and find out that the trans doesnt bolt 2 the bell housing soo if any1 would know lol give me some advice on this cuz i dont wanna waist my money or the time

 

Everything will physically bolt up and drop in. Tuning the ECM to match you new LO5/T5 combo is a different story

 

lol yea id just get the wiring harness out of a firebird 350 and the pcm lol easy easy lol but i appreciate the info lol i was just curious if everything would fit i just wanted second opinions thank u very much sir

 

Your LB9 heads are way better than the LO5 heads, but if you do swap them, you'll have to run premium unleaded. Still, it is worth doing. Use Fel-Pro 1094 steel shims, because the improved quench more than offsets the slight bump in compression.

 

how hard is this going to be cause i am doing almost the same swap except im useing the 700r4 and my intake and throttle body off my 305 cause the one off the 350 is gone. i was told i wouldnt need to do any thing so how and why would i tune the ecm

 

well yea if i did this it would get completely rebuilt bored 30 over it would get holley long tpi runners, holley high flo intake, adjustable fuel pressure regulator, bbk twin 58 mm i think but yea in so doing that i know the heads are decent on it but i also heard that something like port and poilsh the heads and get a 3 angle valve job wouldnt do **** so i heard or maybe my source is unreliable but yea the bad thing is i put all that money in my formula which is rusting quite badly lol 5 years of me driving it winter and all lol othjer then that its all stock with 126k miles ****in 10/10 reliable of course it has kept me buesy in the past lol frozen rear calipers,water pump,window motors,alternator,trans mount,heater core,and many sets of tires lol but yea thanks for the opinions if any1 has anything 2 comment on by all means i love 2 hear it lol