Drivability tuning w/383
10-01-2004, 08:27 PM
#1
Drivability tuning w/383 OK, this is probably to vauge but here goes: LS6 ported heads, 236/238 FMS cam, All the bolt-ons, 383 Callies forged internals.
The motor runs good but drivability is just awful. It's been tuned with LS1edit numerous times. Still isn't right, stalls, hunts for idle, idles at 2400rpm if you push the clutch in.
Does anyone (i.e. sponsor) know what they're doing with this type of bigger cube tuning? Since I own LS1edit in 3 locations in Atlanta, I'm unwilling to pay for **** until I see real results.
Suggestions?
The motor runs good but drivability is just awful. It's been tuned with LS1edit numerous times. Still isn't right, stalls, hunts for idle, idles at 2400rpm if you push the clutch in.
Does anyone (i.e. sponsor) know what they're doing with this type of bigger cube tuning? Since I own LS1edit in 3 locations in Atlanta, I'm unwilling to pay for **** until I see real results.
Suggestions?
10-01-2004, 10:46 PM
#2
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Join Date: Nov 2003
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I'm sure several of the sponsor tuners could help you out.
Any codes?
Suggestions:
- input correct cylinder volume, MAF table, and injector flow
- reduce VE in the lower rpms as per NoGo's post on tuning for big cams
- adjust idle airflow through IAC tables and/or drilling TB blade
- possibly adjust idle timing
Once you get it to idle nice, I would suggest wideband measurements to dial in the VE table for part throttle drivability.
Any codes?
Suggestions:
- input correct cylinder volume, MAF table, and injector flow
- reduce VE in the lower rpms as per NoGo's post on tuning for big cams
- adjust idle airflow through IAC tables and/or drilling TB blade
- possibly adjust idle timing
Once you get it to idle nice, I would suggest wideband measurements to dial in the VE table for part throttle drivability.
