Best motor mounts ? Ls swap

[MalibuSSwagon]

usually a 1" setback plate places the bellhousing flange on the block in the same position as a SBC. So if you are reusing transmission then your crossmembers, driveshaft etc doesn't have to move. Especially good for 4x4 trucks. In my case I reused the SM465 that was in the truck and basically made it a drop in swap. Also most swap headers like Patriot, Doug thorley; are designed around using 1" setback plates. The Car Shop CSP2370 are my go to when doing a swap.

However, one thing to consider. If firewall clearance to the back of the heads on your SBC is tight, 1" setback may not work for you. While SBC's have a flange of about 1" on the rear, the LS is flush to the heads. Just look at yours and you'll see.