LagomorphPrime

So I finally sold my extra car, and will be using the funds to build up my 3rd Gen. My question is what can anyone recommend by way of a good 400 block? Who makes good ones, where can I find quality old ones, what specifically should I try to get? For background, I plan on building it to be a streetable torque monster. It'll be a weekend car mostly, but I want to be able to take it out and peel rubber w/o trying too hard. High revying is not important to me, just that I get solid power at a touch of the pedal. I'll be mating it to a new T-56, unless anyone has any better recommendations or reasons for why that's not a good idea.

Thx

RB83L69

GM Junkyard 509 casting

Use dish pistons; try to pick a combo that produces in the neighborhood of 9.5-10:1. Don't waste a bunch of money on the bottom end, stock parts with good rod bolts will be fine, you won't be turning enough RPM to need anything any better than stock crank & rods. Use a cam in the 220-225° intake duration range and more exhaust duration, such as a Comp XE268. Get the best-flowing heads you can conveniently afford. Use a good exhaust (duh). You can even make it fit under the hood if you use a small enough intake; of course that will negatively impact high-RPM operation and HP, but will move the torque curve and peak to a lower RPM.

Centerforce makes a flywheel for mating the T-56 tp the 400. It is not cheap.