Ok, I have a 1970 240 that is ready to put an engine into and drive. The body has been stripped, media-blasted and primer baked before being painted. Transmission is a Nissan Competition FS5C71B Close-ratio overdrive, rear diff is an R200 with a 4.38:1 LSD. It has custom suspension and Wilwood brakes. This car will be street driven occasionally and taen to track days regularly. I have two different engine options I can go with...but which one?
OPTION 1-
Rebuild original L24 (E31 block) with Micropolished Crankshaft, Competition prepared rods, forged piston (not sure on brand or C/R yet), Slover- modified E31 head with 44mm intake and 38mm stainless competition valves, Isky Cam with .530" lift 264 degrees duration at .050, triple Mikuni Phh44's on a Datsun Competition manifold.
OPTION 2-
L28 built with F54 block, Micropolished and Knife-edged LD28 crankshaft, Forged 12:1 Venolia pistons, Slover-modified E-31 head with 44mm intake and 38mm exhaust valves, Isky cam with .595" lift 294 degrees duration at .050, Triple 44mm Mikuni's on Datsun competition manifold.
I am sure I am forgetting A LOT but this is what I can think of right now.