Thinking of an LS3 swap in my 54 Chevy Sedan Delivery but wondering if anyone is doing the later LT stuff since the LS are getting hard to find in a low miles donor. Does the LT fit basically the same as an LS? Still saving $$ for a donor engine and 6 speed manual Other question would be a harness since I want the factory injection.

 

Don't worry about low mileage on the donors, these engines are still spring chickens w/ 200k miles on them. And there are thousands in the junkyards....

 

The stock rebuilt ones are also not bad prices from various vendors,, I am very happy with the ATK reman I bought.. <knock on wood... )

I picked up the L33 long block for like 3000 ,, for my application the AL block was a big deal to me..
My jeep now sits 1/2" nose up instead off 1" nose down like it did with the 4 banger..

 

The high pressure injection pump in the rear can require some firewall mods depending on the vehicle.