buying car that already has chevy 305 in it.. how hard to swap in bigger motor

[LeX]

I've never messed with engine swaps before... I wanted to do another RB inline6swap, but debating putting in a larger V8 motor if it will be relatively easy to swap. The car has a turbo 350 transmission.

 

Is it relatively easy to just drop in a 350 or larger motor? Car has a 3.90 R200 rear end so its ready for some more power.

[BRAAP]

All traditional Small block Chevy’s share the exact same external dimensions and “foot print”. What you need to be aware of is if this is the JTR set back conversion, the harmonic damper on the new engine needs to be the small one, and if which ever style rear main seal the 305 has that your donor larger displacement engine shares the same, or be sure you have the matching flex plate for whatever engine you swap in.

 

Also, the Big Block Chevy shares the same “foot print” as the small block, i.e, the same motor mounts and bell housing bolt pattern and in the same exact location relative to each other, i.e. it drops in on the existing 305 mounts and trans, though exhaust, hood clearance, and possible damper to steering rack issues will need to be addressed.

 

Oh, and don’t forget to visit this link. #2 will help keep other questions from getting tossed in the shed. This post is really borderline as the information you requested exists here and can be found with a simple search.

 

Click ME for the rules and guidlines...

 

 

Good luck,