The LS1 is a great modern engine but it is not even close to a bolt in like the aforementioned V-8's & 6's. Your flywheel will not bolt up, not sure about the bellhousing. You would probably be better off with an auto trans. That will require a driveshaft modification & shifter. You will need a computer and wire loom. Also need to modify the fuel tank for a pump and return line. Carburation systems are available but are pricy. Mounts would be another issue. Probably need to upgrade the cooling system also.

Fred

Last edited by rfs56trk; 01/21/2012 6:18 PM.
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine