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Just sent you an RFQ . Are there any cad files or blueprints for the P400 bedplate that can be distributed. So I can get a CNC quote without having to basically start from scratch.

My plan is to bomb proof the bottom end first, finish all the external upgrades, then do the heads next summer. I'd like to cryo the pistons and block for sure. Hopefully I find a decent quote for a p400 crank & rods, if not I would get a scat crank and cryo that and the rods I already have...

Did you hear back from your supplier? Could you get a spare p400 crank and beadplate?

@twisted Steel, did you hear back from your supplier? Could you get a p400 crank and beadplate?

When you hit it with a wrench, the pitch is high and it does ring for a bit.. doesn't sound like nodular iron. But the ground narrow lines and rippled surface indicate it's not forged, right? I asked Quadstar Tuning about cranks and they said "The Optimizer has a cast crank that's pretty much...

I'll take em if you still got 'em. Just pm me a paypal address and + shipping $ to AB Canada.

haha thanks, the "death cart" has a polaris snowmobile engine so it really rips! There's a veteran engine machinist in Grande Prairie I'll use for balancing. He's been in the business for 40 years or so. $100/hr shop rate. He cleaned & pressure tested the heads for me, I'm happy with the...

I wasn't aware Heath had a product like that then discontinued them. Just read your 2017 post about it, cutting heads and watching the flows. The test results and GM voiding warranties if they found rear head cooling kits installed, makes it pretty clear you don't want to touch the back end...

Thanks guys. I added my build signature line. I already have the balanced screw pump and a brand new rad and flushed system. I'll look at the dispersant and maxtorque info, wasn't aware of those! I saw Leroy's dual thermostat bypass restrictor, but plan to use a single T-Stat housing...

I'm leaving the "silent majority" to actually participate in the forums. The 6.5 community here is great, and discussion / knowledge sharing betters every build. I'll post pics of my 6.5TD/GMT400 project work under the appropriate topics so others can provide feedback or get inspired...

At least with the redesigned water pump (251603), left/right coolant flows are 50/50 balanced. But a pump redesign won't change a front/back flow imbalance. At least I think that's why the back runs hotter and #8 is the typical fail cylinder (with #7 as a close second). I see little...