Looking at TA's online cam chart what about the TA284-88H? It's shown as being "bigger" than the TA212, even though it has less lift, and only 5 more intake duration at .050 And what should I make of the differences in duration at .050 and Advertised? Like - the 284-88H has 5 more intake at .050, but 19 more intake Advertised. Does this mean it would be easier on the valvetrain than the TA212, or the opposite? What's the concensus on the TA284-88H?
duration makes power, you only need enough lift for what your heads flow, to much lift without porting will slow down the air volicity and rob power, those two cams are very similar i would think it it would depend on what rpm range you want,the 88H will probably peak 200-300 more rpms. also the more duration the more your power curve moves up, so less low end torque, its best ot let a place like T.A. recommend the cam that will work best for your set up. Dave or Tom at T.A. know Buicks very well.
If two cams have a similar advertised duration but one has bigger numbers at .050 lift, thats an indication that one with bigger "at .050 lift" numbers has a more agressive lobe profile....meaning that it can move more air for a longer period of time. Very simplified explaination. :grin: As Kelly suggested, if you are unsure, it would be best to consult the Vendor you plan to use. Be prepared to answer LOTS of questions about your specific application. :TU:
Thanks for the input!!! :TU: So in this case, where the 212 has more exhaust lift and a steeper ramp, but less duration than the 284-88H, you'd expect the -88H to be easier on the valvetrain? Not that the 212 is that hard on it...
