Well, after plenty of supply chain issues, I finally picked up my motor yesterday! The dyno numbers that I got weren't very impressive (to me) on the surface, but I have to keep in mind I built this thing for boost. Compared to my zz383, rated at 425hp/450tq by GM, this 400 has more cubes, similar compression, way more cam (230/236 .582/.564), and better heads. But it only made 438hp/470tq -- however at 10psi, which was my target, that's a more impressive 748hp!! It'll be interesting to see how it acts N/A.TireSmoker wrote: But, on Saturday I embarked on a most noble journey to Parsons Hi-Performance in Dayton, OH after a couple phone calls with Bruce Parsons. This is the guy that put Tony's 383 together. I took my Edelbrock E-Tec 200 heads and other misc parts down to Bruce and put down a deposit to put together an all-forged, roller, 406 housed in a Dart SHP block. I took him a couple of my EFI intakes, and he will actually dyno it on EFI when it's together. Delivery is not expected until some time in the spring, so more details will be in the 2021 thread, but it should be pretty strong!!
-Dave
There's a bit more reengineering work than I first imagined. First was the oil dipstick. The one from my ZZ383 won't work. Long story short, Lokar makes something specific for the SHP block. In stock and ordered it tonight. Next up, my centerbolt valve covers do not fit because the baffle is too wide due to the width of these particular rockers. I kinda wanna keep these Chevrolet valve covers anyway, because they look cool. That means I need to find some other way to mount my coils, because my current bracket mounts via the centerbolt's holes.. I have some universal brackets that hold 4 coils each. I'd have to make new plug wires, but I think I have all the stuff to do it. If I can find someone who does cad/cam, I bet I could modify the design of these coil brackets to mount via the perimeter valve bolts. Or I hack the baffle out of the center bolt valve covers.
-Dave