Quote:
Originally Posted by RedZMonte
Not sure if its the same thing but on Honda's Vtec i know (or so i have been told) the larger lobe is locked in by a Pin when the engine reaches a cretin rpm the ECU uses oil pressure to lock in the pin to use the larger lobes... dunno if its the same on the GM's.. Or i could be completely wrong..
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thats how honda does vtec. thats not how gm does it on the 3.6dohc. they actually retard or advance the cams relative to the crank. its more like varible cam phasing, and its varible valve timing (perse). when you advance or retard the cam, your changing the valve timing events. honda actually changes lift and duration of the cam. while gm only changes when and where(in time) the valves open. now combine the two...woah.
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87 fiero gt 5spd 3500, 1280 cam and PR, ls6 valve springs, port and polished heads, ported lim, ported uim, 4.3 70mm tb, ported trueleo headers and y pipe, 2.5 inch ex, flowtech muff, gmtuners.com prom, 7730 ecm (GAVE TO BROTHER, divorce reasons.)
03 Trailblazer, cai.
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