Let me start off by saying that I have been searching and reading up on 305-350 swaps for awhile now. I am still having trouble trying to figure out which direction I should go! I need help figuring out which block to start with. I do not want to rebuild the motor just buy and drop in. I can upgrade cams, intakes, etc as needed but want to avoid the bottom end. Here are a few things I am looking for from the swap.

-I want to keep the TBI set-up because I don't want a carb.
-I thought about a LT-1 but involves too much wiring which I want to avoid.
-Looking for a good daily driver with enough power to be fun unlike the 305.
-Maybe around 300/325hp to the wheels

Which block should I buy that will give me the internals and heads that will help me get to the HP I am looking for with bolt ons?

 

Most likely going with the L31 vortec motor. What do you guys recommend I do about the transmission? Can I keep the crappy 700-R4 and put a B&M shift kit and a 2600 stall converter on there? Is there a stock converter that I can swap in with a higher stall out of a truck or something? What about the flexplate will the 305 swap over?

 

As you haven't filled in your profile or given us any details, we have no idea what year 305 engine you have
so the flexplate may bolt straight up to the L31 or not.

 

What rear ratio?

The S10 /Astro GM # 24208645 convertor is supposed to be a higher stall

http://www.corvettefaq.com/c3/THE%20...%20Upgrade.htm

Came in
http://www.jenacotorqueconverters.com/product/RMB-29HP

 

Thanks for the info vetteoz, that was perfect! Do you think the 2,025 stall will be good for what I need?

My car is a 92 rs 305TBI.

 

Bump. I'm also wanting to swap out my 305 for a 350 and looking to get around 320-350 hp

 

First, I would say 300 RWHP with TBI without power adder is a pipe dream.

But, there is a sticky on the TBI forum about using a Vortec 350 engine for a TBI swap. I'd suggest you look there for getting the most out of the TBI setup.

 

You think I can't get 300RWHP out of a 350 vortec with full exhaust, intake, and a cam swap?