Appropriate timing curve

Well compare this, the cars that make 450 on his dyno make 380 on mine. The cars that make 450 on his dyno run low 12's. Cars that make anything over 400 on my dyno typically run 11's. (4000+ pound new challengers and chargers)

OK...the MPH /weight thing is the real test - and I've read enough to know low 12s in those "fatty" LX cars is the standard with the SRTMAX...so I don't doubt what you're saying.......assuming gearing is the same?


There isn't a difference in tuning in your comparison. If you were happy with the way your old small block idled and its street manners you should be happy with this. Assuming they are the same amount of cubes it should behave the same.[ /QUOTE]

The old small block was twenty more - but that was a solid flat tappet with more duration and it wasn't too crazy.

As far as cam profile, it is a proprietary grind. I will tell you its a 21x/22x on a 115 LSA. .56x/.58x lift and needs an inexpensive aftermarket spring that does require and mods to the heads or to the valve seals. It runs with stock lifters. Its not going to be really lumpy, but on average it makes about 20 more hp/tq than that srtmax

I'll give it some thought - although I didn't really want to get into swapping valve springs.....

Great to have a sensible discussion about this stuff though:thumrigh: