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View Full Version : What happens when you run lean in a L67/GTP?.....


GMMAN
12-06-2004, 04:01 PM
This!
17TH SVT
12-06-2004, 04:11 PM
whos car is that? man thats a dirty engine.
GMMAN
12-06-2004, 04:22 PM
A friend of Dan's from FWB. I don't think people from those parts know how to clean their engines :taunt: ! Believe it or not, everything inside looks brand new.
Spinner
12-06-2004, 05:02 PM
But why is the piston gone?
SloNLo_350
12-06-2004, 05:22 PM
But why is the piston gone?
stuff hit other stuff. thats all i know though. something about a spark plug breaking also.
Spinner
12-06-2004, 06:16 PM
stuff hit other stuff. thats all i know though. something about a spark plug breaking also.

Yes, but, why is the piston gone? :mike:
SloNLo_350
12-06-2004, 06:19 PM
ahhh.... got it ah hah... oh wait, i mean "that was gay!!"
slmdLS1
12-06-2004, 06:25 PM
ahhh.... got it ah hah... oh wait, i mean "that was gay!!" :roll:
GMMAN
12-06-2004, 06:28 PM
L67 is the code for the 3800 s/c motors in gtp's(dan's car), and my Regal.
Running it lean=knock/detonation=chipped crappy stock piston :cry:
Lewis, (the owner), was running a smaller pulley, aftermarket pcm,(with more timing and higher shift points), but his exhaust still had the stock y-pipe which narrows to about 2 in.. He said he thinks his 2-3 shift slipped a little, which bumped the rev-limiter. When you hit the rev-limiter, apparently the first thing the pcm does is cut fuel :roll: , and lean @ 6100-6200 rpms with about 12-13 psi of boost is not good.
Spinner
12-06-2004, 06:56 PM
L67 is the code for the 3800 s/c motors in gtp's(dan's car), and my Regal.
Running it lean=knock/detonation=chipped crappy stock piston :cry:
Lewis, (the owner), was running a smaller pulley, aftermarket pcm,(with more timing and higher shift points), but his exhaust still had the stock y-pipe which narrows to about 2 in.. He said he thinks his 2-3 shift slipped a little, which bumped the rev-limiter. When you hit the rev-limiter, apparently the first thing the pcm does is cut fuel :roll: , and lean @ 6100-6200 rpms with about 12-13 psi of boost is not good.

Which is his own damn fault for not having an ignition box with a spark limiter. :shrug:
shock6791
12-06-2004, 07:41 PM
so, that's what that noise was....