The Ford Barn

Bored&Stroked · 05-15-2024, 10:31 PM

The block has been decked - as having the piston a bit above the deck is not a bad thing - as it helps tighten up the quench without having to mill the heads a bunch. If you think about it, you have a .052 or so head gasket (when torqued down) - which puts the head profile that much higher than the piston. So, having the piston a bit above the deck brings it a bit closer to the chamber top. Of course, it all depends on your specific combination of parts - but I think he is going to be just fine!

Note: When I'm building a custom performance engine, I have whatever deck and main saddle work done first, then I put the crank and rod in the engine and exactly determine what my compression height needs to be for my given combination (heads, pistons, gaskets, etc).

Then I order the pistons from Ross with my specified compression height (which tells them where I want the pin). This gets me exactly the quench that I want. There is just a minimal upcharge from Ross to do this - so it is worth the extra time/effort to get it exactly right.

05-15-2024, 10:31 PM	#9
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,910	Re: 276 stroker from 35 years of parts The block has been decked - as having the piston a bit above the deck is not a bad thing - as it helps tighten up the quench without having to mill the heads a bunch. If you think about it, you have a .052 or so head gasket (when torqued down) - which puts the head profile that much higher than the piston. So, having the piston a bit above the deck brings it a bit closer to the chamber top. Of course, it all depends on your specific combination of parts - but I think he is going to be just fine! Note: When I'm building a custom performance engine, I have whatever deck and main saddle work done first, then I put the crank and rod in the engine and exactly determine what my compression height needs to be for my given combination (heads, pistons, gaskets, etc). Then I order the pistons from Ross with my specified compression height (which tells them where I want the pin). This gets me exactly the quench that I want. There is just a minimal upcharge from Ross to do this - so it is worth the extra time/effort to get it exactly right.