xc_hide_links_from_guests_guests_error_hide_media
That test just reinforces my conclusion stated earlier. The added exhaust duration trades torque for HP. A reverse split would likely even make more torque. Many of the early LS cams were reverse split and added a good bit of low-midrange torque compared to stock while increasing rpm and hp potential. They ran well down the track as well.
That being said if the intake lobe is tiny, the added exhaust duration is probably more of a benifit than a cam that has adequate intake duration for the powerband desired especially paired with a wider LSA. Cams like the 492' and 071' GM rollers have a larger split than most. The 492 I recently degreed was 200* @ 0.050 on the intake and 216* @ 0.050 on the exhaust with a 115.5 LSA.
The 071' is 208/221 @ 0.050. With GM fast burn heads and the proflow 4 manifold I ran the ZZ6 makes over 400 peak HP at 5,600 rpm with that tiny 208 @ 0.050 intake lobe. I doubt that 208* intake lobe would carry nearly as well without the 221* exhaust lobe and the somewhat wide 112 LSA.
The 492' cam and 185cc 2.02/1.60 valve Vortecs make the power peaks a little lower than the 071' cam/Fastburn combination but not by much.
Both the 492' and 071' cam have near stock idle quality and flawless low speed drivability in a 350 with 9.5:1 or more compression thanks to the smallish intake lobe and minimal overlap. The 492' cam is pulling 18.5 in/hg idle vacuum at 750 rpm with the a/c on and nearly 20 in/hg with the a/c off with 20* of timing advance it pulls even more vacuum if I add some timing. When I go to the P59 and can get idle timing into it, it will idle like a stock Vortec 350 at 625 rpm. With the 1.6 roller rocker I run the 492' cam gets closer in lift and duration to the 071 but has the wider 115.5 LSA. I also feel like another reason the 492' cam pulls so well upstairs and my setup is not overly sensitive to octane/timing is the 111* ICL closes the intake valve a little later. The 071' cam is on a 108 ICL by comparison. The 071' might be a little stronger in the midrange than the 492' but it would likely be splitting hairs to notice a difference real world in a vehicle and my 492' cam was less than 1/3 the cost of an 071 when I bought it.