I have to admit that this is quite impressive! The stock pistons in the 3800 are half the strength of the GN 3.8's! Rest of motor is a+++++
Maybe we should retrofit the 3800 into the regal!? Better bottom-ends, faster revving, and best of all, better cam choices and stock roller cams! Heads even flow better as well!
http://zzperformance.com/grand_prix...15&PHPSESSID=d3a5ccd3d423c22f6d4db6335f58011f
Or here it is copied,
"We received the new turbos for the twin turbo GT a couple weeks ago and decided to head up to Stanton yesterday for test n tune. The weather was nice with temps around 70 and a D/A around 1000'. Track prep was pretty good but could have been better. At 23 psi, the first pass off the trailer set the 3800 FWD 60' record with a 1.460. [The car's previous best (and old FWD record) was 1.489.] Power was down at the top end and the pass was a 9.62 at 143. Since I had reinstalled the 95 lb low Z injectors, the tune was off quite a bit on the rich side. Further tuning resulted in better wideband readings(11.2 by the 3rd pass), but the car still did not run the MPH it should. Sixty foots were 1.48 and 1.46 again. There has been a barely audible(with open exhaust) tapping sound for the last couple months and it started to get louder. The result was a weak cylinder and max KR resulting in less than 5 degrees of timing advance. At this time we suspect that a rod bearing has failed. I imagine that it happened when the fuel pump was bad and I ran a few passes at 14:1 air/fuel ratio back in August.
After 36 passes on the stock bottom end with most in the 9s, we will finally be tearing down the motor to see the damage. I will most likely pick up another used motor and use the bottom end to finish out the season and run into next year.
-Matt
Click here for video
ZZP cars were the first to run 1.6, 1.5 and 1.4 60 foots. The TTGT runs a stock differential and the Certified transmission is holding up great!"
Maybe we should retrofit the 3800 into the regal!? Better bottom-ends, faster revving, and best of all, better cam choices and stock roller cams! Heads even flow better as well!
http://zzperformance.com/grand_prix...15&PHPSESSID=d3a5ccd3d423c22f6d4db6335f58011f
Or here it is copied,
"We received the new turbos for the twin turbo GT a couple weeks ago and decided to head up to Stanton yesterday for test n tune. The weather was nice with temps around 70 and a D/A around 1000'. Track prep was pretty good but could have been better. At 23 psi, the first pass off the trailer set the 3800 FWD 60' record with a 1.460. [The car's previous best (and old FWD record) was 1.489.] Power was down at the top end and the pass was a 9.62 at 143. Since I had reinstalled the 95 lb low Z injectors, the tune was off quite a bit on the rich side. Further tuning resulted in better wideband readings(11.2 by the 3rd pass), but the car still did not run the MPH it should. Sixty foots were 1.48 and 1.46 again. There has been a barely audible(with open exhaust) tapping sound for the last couple months and it started to get louder. The result was a weak cylinder and max KR resulting in less than 5 degrees of timing advance. At this time we suspect that a rod bearing has failed. I imagine that it happened when the fuel pump was bad and I ran a few passes at 14:1 air/fuel ratio back in August.
After 36 passes on the stock bottom end with most in the 9s, we will finally be tearing down the motor to see the damage. I will most likely pick up another used motor and use the bottom end to finish out the season and run into next year.
-Matt
Click here for video
ZZP cars were the first to run 1.6, 1.5 and 1.4 60 foots. The TTGT runs a stock differential and the Certified transmission is holding up great!"
Other than headers and the adapter plate,and eng mount brackets it would be quite easy. Plus there is better pcm's and software to program the new stuff. You could also run the 4L60E tranny from the F-body as well and have over drive as well.
I have always said run a forged piston since day one! :wink: I chipped 2 on my impala one winter. Haven't broke one since with over 200 passes on the motor. 18psi boost 24deg timing. That is the equal to about 30psi boost in GN temperature wise 
