For my daily driver/weekend warrior...
Scat 4.2L crank
Scat forged 4.0L rods 6.125"
KB421 Hypereutectic Pistons -27.5cc
cleggengine.com offers this as a package for a great deal, w/ clevite bearings, moly rings, and balancing. It would be several $100 more to go Hesco crank, scat forged rods, and Russ's no need to deck pistons, is it worth it? Latter scenario also requires finding a shop to balance rotating assembly. Does Russ sell balanced rotating assemblies? (I'll be PMing him after this post)
I like the idea of the lower piston to wall clearance with the hypereutectic pistons. This should reduce piston slap/wear, especially during cold weather startup when clearances are at their largest. I'm not looking to make huge horsepower so I don't think the disadvantages of forged pistons are worth it.
I'll have the block cleaned, magnafluxed, line honed, cylinders bored/honed, and milled for 0.000" deck height. What's your favorite shop near Denver?
I'm hoping my stock 0630 head is good. I'll have a shop clean and check it. If so, I'll do a little gasket matching and chamber work to reduce detonation possibilities. Because my 99 has EFI, the only factory spring compatible choice for cam is Russ's custom (low lift) grind based on comp cams 68-232-4? I'm hoping this comes in the thrust plate flavor. If not, I only need older style timing set and the bolt w/ spring & pin?
If my head is shot, I'm thinking stage 2 from 505 performance (nice price again) and then I could use whatever camshaft, but probably want the 68-232-4 (standard full lift version) because I need to pass emissions and want strong and stable idle vacuum . Even if my head is good now, I'll likely do this in the following couple years.
This should work out to static CR 9.1:1 with dynamic CR 7.77:1 (6.63:1 in Denver altitude) with quench 0.043". I'm hoping to stay 87 octane, reasonable?
Since the hyper pistons reflect more heat into the head, I'll add a Hesco high flow water pump. Hopefully that and the Mishimoto aluminum radiator will keep head temperatures in check.
Thanks for checking out my plans, I look forward to hearing from you.
![Cheers! :cheers:](./images/smilies/cheers.gif)