killer 71 c-10
did the booster arrive yet?
any word from vintage air?
did the booster arrive yet?
any word from vintage air?
The Best V8 Stories One Small Block at Time

Last edited by 68shortstep; Jun 1, 2008 at 06:10 PM.
Looks good. I'm eager to see how the final product turns out. I see you talking about the dyno... Did you add a cam or any internal upgrades while you had a chance?
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Operationally, the LH6 always deactivates the same four cylinders in the firing order (1, 4, 6 and 7). According to Meaghan, lifter design and pushrod length are the same for all eight cylinders, but camshaft lobe profiles are different for the cylinders, which are deactivated. (This seems, in part, to contradict the GM media website, which states, "...in displacement-on-demand equipped engines, half of the cylinders have unique two-piece valve lifters..." -this being an important stipulation for those wanting to swap camshafts.)
For hot rodders wanting to modify their DOD-equipped LH6s, it's important to know that the switching lifter has a lift limitation of 15mm (at the valve). The factory cam uses 12.2mm of that (about .480 inch), giving the LH6 a theoretical valve lift limit of .590 inch. It's worth noting that this limit is for the lifter; a different valve spring would almost surely have to be used at this valve lift. Interestingly, it seems possible to grind a custom camshaft, which would only provide increased lift and duration to the non-DOD cylinders (2, 3, 5 and 8), thus allowing higher lift with standard non-switching lifters in those cylinders.
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http://www.superchevy.com/technical/.../0405sc_gmdod/
Just a thought that I'd throw out there.
Just a thought that I'd throw out there.



. Swapping dashes out isn't that bad of a job, just all the spot welds on the windshield frame







