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Registered
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,565
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I always set cams to the high side. The left cam gets a number, say for example the 78 SC I did last night, high spec is 1.7 and I pegged at 1.7. The right cam after fooling with it slightly came in at 1.67, so its a match.
The spec for the SC cam is ROW .9 to 1.1 the SC USA timing is 1.4 to 1,7. Anywhere between .9 and 1.7 can be used successfully as long as the pair of cams match numbers. The 78 ROW and USA are the same pistons with .2 CR difference being the base gasket. I always go to the high side because of chain stretch and most time is spent in the 3000 RPM range not in the twilight zone..
Bruce
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