Has anyone ever tried to stuff a 454 in place of a 305? thinking of this swap for my 92 firebird, can it be done?

 

Anything can be done, use search button theres plenty of threads on BBC swaps. Have to modify the K member for headers though or buy a tubular K member

 

it is a very easy swap no need to do anything to the k member use small block mounts drops in like the small block headers are kind of pricey

 

Can anyone give me some advice. i am looking to replace my engine 5.0 305 TPI on 88 firebird trans.. I am not doing it myself but taking it to a shop. I was reading some people saying i should upgrade to 5.7 TPI. Any suggestions and what type of mods should i have them do. I dont have a ton of money looking to spend about 2000-3500 but i just dont want to spend the money and find out for an extra couple hundred bucks i could have gained alot more. I am a rookie so break it down a little bit for me. If you know of any websites or shops to recamend please let me know.

 

You could do that, but I would just use a manifold and carb, and call it a day. Also I would search and search for information. You will end up spending more money if you don't do the research ahead of time.

 

How much of a gain could one expect switching the top end to carb on a 305 ?

 

Your not going to gain anything but simplicity with a carb. And some carbs like quadrajets can still get decent mpg and have the secondaries to really give you the power. I myself would go with a carb, but you can go FI too.

 

Carb is cheaper then FI once you start building a motor. I have heard good and bad things about TPI, for a street car I guess it's a good thing.

 

with a budget around there i would think best bang for your buck is a vortec 350 motor