6.0L 5-Speed Dyno Day Today
10-16-2008, 08:52 AM
#171
Right. This isn't a numbers game for me but moreless a curvature issue of why the power falls off so fast up high. Hopefully this is nothing more than a camshaft issue, unless for some reason the problem lies with the exhaust not evacuating properly at higher RPM's I do have the OBX long tubes that "Y" into a single 3.5" pipe out the back with a magnaflow muff. I'm still not convinced that the exhaust would be the issue. I think it's a matter of the valve events.
I doubt the bottle neck at high RPM's is exhaust related, I would think the fall off would be steeper along with being more erratic.
10-16-2008, 11:40 AM
#174
TECH Veteran
After looking at this more yet those number amaze me for that dollar level. You are putting down around the numbers of 5.3L with a Radix bolted on. Top that for the cost you have into it.
10-23-2008, 07:26 AM
#180
I'm waiting for zippy to tune and dyno his new 5.3L headed 6L with the tr224. I am on the fence about cam changes. I may not even change camshafts but if I tear into the engine and see the valve timing off, I will correct it first. If I see the valve timing on, I want another cam to swap in. Not to sound snotty, but I still haven't seen another 6L swap from anyone who's torque is as high as mine and as broad. This alone is attractive enough for me to want to stay with my current cam. Just read another 6L thread where a guy swapped L92's, larger cam and L76 intake and he's still 50 RWTQ less than me. That's **** tons lower. I don't know if I mentioned this earlier but leaving the dyno facility with my co-worker we raced on the way back. I could hang with the LS3 up until about 80MPH where only then he pulled on me. He wasn't upset (that he said anyways) but it shows you that torque is king. If I could only get my torque curve to extend and not fall off I would be extremely happy. 
I would be happy with 380 RWTQ that went completly up the graph than 400 that falls off after 5K. I think a single pattern cam is going to do that for me. Single pattern cams always have more available torque everywhere (not necessarily the highest number) but most average torque provided you have a good working engine combo.
I would be happy with 380 RWTQ that went completly up the graph than 400 that falls off after 5K. I think a single pattern cam is going to do that for me. Single pattern cams always have more available torque everywhere (not necessarily the highest number) but most average torque provided you have a good working engine combo.