be carefull. as the heat exchanger from the big block may have been set up for a half system or a full system.
you need to plumb per the heat exchanger design. dont go mixing and matching parts randomly. how many ports on the heat exchanger glygol side? how many on the raw water side? post...
Pull the plugs, grab the belts
use a momentary start switch to bump the starter
pull the starter and use a prybar on the starter teeth
you never ever ever ever want to turn a small block chevrolet motor from the front crank bolt
in case you want to do a bit of research
companties that have marinized the LS and LT motors:
Volvo Penta
Ilmore
Indmar
PCM
companies that have avoided the LS and LT
Mercruiser (they made their own blocks based off of gen 1 SBC parts)
you can always follow what mercruiser suggests regarding plumbing on a full system heat exchanger
me personally, I would put a new long block in front of the heat exchanger.
I use a bent allen key chucked in a drill to remove a bit of balsa core. that way the fiberglass acts as a guide, and the allen key chews out the core to a fixed depth.
then mix up some PB (see the stickies) and fill the void. dress as needed and it will be a solid bit around the transducer hole.
the top few threads in the forum that have the little post-it note symbol. those are "stuck" like a sticky note on the top of the forum. 3rd one down in the restoration forum has all the DIY links.
there is no way to make an automotive fuel system safe for a boat by an individual.
I build my own engines. many people buy their engines from michigan motorz. GM used to sell 6.2 liter 377 stock bore crate motors.
the LS marine motors have been out since about 2008, so I would seriously...
because automotive fuel systems are not spark suppressed or designed to be in a boat. if they leak fuel in a car, it goes out the open bottom and doesnt matter. in a boat, the fuel leaks in the bilge, then turns to explosive vapors
standard ACX plywood is fine. for the double-thickness, use tite-bond III to glue two pieces of 3/4" together.
Rustoleum is fine. use a hardener. I believe that is link 18 or 19 in the sticky
I would also suggest going thru the forum stickies. specifically the 3rd down. https://forums.iboats.com/threads/how-tos-and-other-great-information.283508/
go thru threads 14, 15, 18, 2, 3, 4a, and 4b in their entirety.
