Originally Posted by vortectransam
It does the exact opposite.. Common sense should be used to figure that out..
Hope I helped clarify that false information..
I can't tell if you're making a post to everyone or just me since you quoted me. Or if you failed to read my sarcasm and were trying to teach me what I already knew.
But, decking or shaving won't necessarily affect the "geometry for the manifold to bolt on". What it will do however, if enough material is removed, is lift the valve off its seat further throughout the entire lift range. This ends up changing the rocker ratio, needed valve length, or pushrod length etc. It could also lead to having a valve that never seats if enough material is removed. This also brings the face of the valve closer to the piston. Possibly turning a non-interference engine into one, or closing the "cushion" area designed into interference engines.
Again, neither has anything to do with generating clearances for valve train, hence the sarcasm in my post.
1994 2.3 XLT Turbo
Ranger Roller cam 2*R, T3, Gillis @ 20psi, 3in downpipe dynomax ultraflow, no cat, Large NPR, Turbo XS RFL BOV, LA2, Bob's big log header, Gutted/Rotated upper, Knifed lower, 65mm TB
'96 Expo 8.8, LS, Disk Brakes
245/45/17, Chrome SALEEN's
Getting over hauled!