So I finally got around to tearing down the 351w...last weekend I installed the cam and degree'd it and checked PTV clearance and made sure the 1.7rr's had the proper geometry. Today, I came in and cleaned the V/C's and timing cover, painted them and the new water pump ford grey and painted my fuel rails black. I pulled the Crane valvesprings and went to check installed height with the new Comp retainers/locks to see which shims out of my bag of goodies that I needed....that's where the problem came...the valvespring seat has an ID of .990", almost looks like it's set up for dual springs(F3ZE heads)...nobody makes shims with a 1.440" OD and .990" ID so I've ordered a valvespring seat cutter/arbor so I can machine it down and my shims will fit. It's a PITA to do things right...lol.
I did get the exhaust ports on one head finish ported/polished and two intake ports finish ported...I'm hoping to have the cutter here tuesday and have things going again by next weekend....at least I'll have all this stuff for when I set up the 302 for my ranger. I also suspect that's why the 351 never wanted to run past 4600rpm in the old 'bird...the springs were installed .030"/int and .070"/exh taller than the recommended installed height.
Installed height on valvesprings will always be right on every motor I put together from now on...that's for damn sure.
-Don
I did get the exhaust ports on one head finish ported/polished and two intake ports finish ported...I'm hoping to have the cutter here tuesday and have things going again by next weekend....at least I'll have all this stuff for when I set up the 302 for my ranger. I also suspect that's why the 351 never wanted to run past 4600rpm in the old 'bird...the springs were installed .030"/int and .070"/exh taller than the recommended installed height.
Installed height on valvesprings will always be right on every motor I put together from now on...that's for damn sure.
-Don
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