So I had some Edelbrock Performer RPM heads cut about .025 thousandths from overheating/warped issues.....Would I need different length pushrods to keep the rocker tip on the center of the valve stem? They're stud mounted rockers....
What are you talking aboutIt is going to be a pain, but now how much is left from the squish to the top of the ring? That should be about .150 thousands so you do not cook or warp the ring.
So you think removing .025" off the deck is going to create an overheat condition?Now that you took off .025" for the warp, that is less material for heat-transfer is they sure made the head light is not enough meat for head dissipation.
Is it not more important to ensure the rocker tip is mostly centered on the valvestem, with not greater than .060" of witness mark?So, with the assembly about to start, you can just use one cylinder is set up one rocker arm assembly in the cylinder, check to see of the rocker arm follows the valve(s) tip and if it does, you do not need new rods.
What solid lifters are .025" taller on the buttom than the lifters "BlackStang" has... which he hasn't told us what he has in the first place?Being that is the only reason you want new is solid lifters could take up the .025" if you ran adjustable push rods or the rockers were adjustable for lash.
i did run into ptv clearance issues though.
If you cut .025 off the heads wouldn't that lower them .025? Because heads are located on a block that is 45degrees apart, lowering each head by .025 would bring the heads .050 closer to each other.
If they are lower wouldn't that create a gape on the inside of the intake manifold area that contacts the head? So I would guess you would need to take .025 off the top area of the intake that contacts the head.
Ron
What are you talking about
Assuming the push rods were correct befor you had the heads milled,just shim/adjust the rocker arms for the differance (i.e heads milled .025,add .025 shim to the rockers or adjust the poly lock about 1/4 turn out) to get correct valvetrain geometery again.
Where the heads flat milled or angle milled? If they were flat milled definitly check piston to valve clearance,if its close you got two options,have the pistons fly cut,or a thicker head gasket. I'd opt for the first one.
If it was angle milled,you may actualy have gained some clearance,but make sure you check. Always check. The only real down side to angle milling is that parts may not fit up quiet right.
You may also need to mill your intake manifold,check first as its possable that only a change to thinner manifold gaskets would be required.
(Btw,I'm back!)