I have a newly rebuilt 1955 chevy 265 , bored to 283 many years ago. It has 283 pistons, 1956 heads(306) hardened seats, 097 corvette camshaft with the slot in the rear journal, Isky edm .024 solid lifters, 600 afb carb, and no intake. Also, ramshorn manifolds. This engine will be in my 1955 chevy 2dr with 3sp od and 370 rear end. Any suggestions about an intake manifold? What weight oil should I use to break it in. I'll use Isky cam paste and gm eos . What might this unit run in the quarter? Any other ideas from hamsters?