Does anyone have any experience with this camshaft? the description on Hughes website specifically says its for low compression engines. just curious if anyone had used it and how well it performed.
Glad you asked. Before the fire devastated Doug's property we were working on a new cam grind for pure low end torque, on hold indefinitely now. What do you want out of a cam? The compression has little to do with it.... That cam is very similar to the Oregon Cams 2106 which I used in my build (yet to be started up) but with more duration on the back side of the lobe. After modeling dozens of cam profiles with Doug I agree with RustyRadRod the reverse pattern does not make much difference in the modeling. What do you want is the question. The Oregon Cams 2106 with the shorter duration and 108 LCA will give you a lot of kick at lower RPM but die off over 4000RPM (I was after 100% the most kick under 4000RPM in my build). Dougs RV-10 is similar to the Oregon Cams and gives _just_a_little_bit_more_ at low end but not enough to notice. His RV-15 looses a bit at lower RPM for a bit of a gain between 4000 and 4500. That cam is more similar to Doug's RV-15 so if you want to wind it out a bit then it is a nice balance. The lift is all you need even if you put in larger valves (assuming naturally aspirated). Any more you are spending more energy opening the valves than you get in increased flow. The cam we were working on was in the 192 degree duration range which no one would actually offer from the big names because it "anyone in their right mind" would not buy that cam but it did give heck of a low RPM kick over the RV10 or 2106 and did die out very badly over 4000 RPM but we were after a 100% daily driver cam that would be a blast gassing it from the red lights.
Also the Comp Cams 252 degree really lost a lot under 2500RPM but give a good kick up to 5000-5500RPM... it is all about what you are after.