ZR-1 Net Registry Forums - View Single Post

Hog · 08-30-2010

I wish it was close, I could pull the PCM calibration and tell you what was up.
LT4 into an auto car would be a bolt in procedure. If the car was an auto LT1 car with an LT4 retrofitted, the care would start and run as is, but wouldnt have the 6412 rpm LT4 rev limit or LT4 specific timing/fueling specs. The injector constant would be a bit off as the LT4 uses teh 28 lb/hr injectors. The stock LT1/auto shiftpoints and other trans parameters woudlnt be optimized for LT4 use, but would still operate just fine.

LT1 rev limit 5800, LT4 6412.

IMO someone has installed the red intake, and installed the 8000rpm tach. Roller rockers only came on LT4, but are easily installed.

I have even heard that the 33 1997 LT4 Firehawks and the approx 100 LT4 Camaro use the stock LT1 calibration. I can personally not confirm nor deny this.

peace
Hog

08-30-2010	#2
Hog Join Date: Jul 2010 Location: Woodstock, Ontario, Canada Posts: 1,271	Re: Fake CE LT4? I wish it was close, I could pull the PCM calibration and tell you what was up. LT4 into an auto car would be a bolt in procedure. If the car was an auto LT1 car with an LT4 retrofitted, the care would start and run as is, but wouldnt have the 6412 rpm LT4 rev limit or LT4 specific timing/fueling specs. The injector constant would be a bit off as the LT4 uses teh 28 lb/hr injectors. The stock LT1/auto shiftpoints and other trans parameters woudlnt be optimized for LT4 use, but would still operate just fine. LT1 rev limit 5800, LT4 6412. IMO someone has installed the red intake, and installed the 8000rpm tach. Roller rockers only came on LT4, but are easily installed. I have even heard that the 33 1997 LT4 Firehawks and the approx 100 LT4 Camaro use the stock LT1 calibration. I can personally not confirm nor deny this. peace Hog