L31MaxExpress
I'm Awesome
Yikes, id hate to have it running 2600. My other turbo truck (6.0 LQ4) ran 1950@70 and it was perfect. Towed like a diesel too.
Could pull 8000# at 70 and never had to unlock the converter in 4th on the hills. It would 60' in the 1.9s with all terrains and run low 12s @5100#.
Its been years since i messed with the older Small Blocks, but i remember that they felt like they had more torque down low but ran out of steam pretty fast.
From what ive gathered the ZZ4 Cam doesnt like to be chugging at lower RPMS even tho it has a -9.5* overlap.
Just thought about it, but do you have a way to look at the live data? Wondering if its picking up any Knock and pulling alot of timing out at the lower Rpms making it weak?
Got a buddy at work with a S10 that is fighting Knock sensor issues. He couldnt pull a small hill in 4th with the converter locked, and 2nd would scream but barely pull the hill. Looked at it with a scanner and it was pulling 10-12* timing on heavy load/low rpms.
I tuned a LQ4 with an Edelbrock Proflow intake and headers in a 71 Chevelle. 4L80E and 4.10s. At 70 mph it is turning just shy of 2,600 rpm and it LOVES it. Just blip the throttle and you are rolling 90+ in no time.
Your 60' is not impressive to me thoughm My NA 5.6 I had in my 2012 Titan would pull 1.9xs 60' times in a 5,300 lbs race weight crew cab truck with an open differential on P305/50R20s. Best pass was a 13.6 FWIW. My NA 2006 Hemi Ram had a best 60' of 1.78 on drag radials.