forcefed3.8's
Buckeye Bullet
- Joined
- May 26, 2002
- Messages
- 3,845
We took my friend's stock long block car back to the track last night. It has:
Stock rebuild .030 over pistons, unknown cam with speed pro lifters
The valve job on the heads were whooped, so we put a 40,000 mile set on I had with fresh comp 980's heads are untouched other than springs
TE44 with .63 Precision housing
60 lbs injectors with standard Translator, Extender 104 race chip 25/23 timing
CAS V4 intercooler
3.5" THDP no exhaust
0 pump Vigilante 5 disc full billet trans
Walbro fuel pump, volt booster, hot wire
AC r42ts spark plugs
full tank of Q16
Last week it went 11.69@114 with 21psi and the converter locked in 3rd. The fuel pump was bad (new Walbro bought in May) and it was getting lean at the top of the track 11.7 on the wideband.
We swapped in an old Walbro from 2006 and it went to 10.2 on the wideband.
I started giving it boost. I figured 28 to 30 would be needed to break into the 10's. I got it adjusted to 30psi and 10.7 on the wideband.
Took it to the track.
11.41@115.x 30psi 10.3 AFR, 0 knock, converter locking at 105 It felt flat from 85mph on. I took some fuel out.
11.35@115.x 30psi, 11.1 AFR everything else the same. I took out some boost
11.41@115.x 27psi, 10.9 AFR I figure the converter is dragging it down
11.35@115.7 27psi 11.0AFR no converter lock tried to lower the boost
11.36@116.0x 26.5 psi 11.1 AFR no converter lock car cooled down some.
I tried to lower the boost more, but it is tough to guess with the RJC unit and the stock actuator is turned way in. The up pipe was cool after every run. 60's were all 1.51 to 1.54, 1/8mile was 7.1X @93.7 to 94.1. I figured the car should go 96 in the 1/8 and 119 in the 1/4. It seems like when the digital dash starts flashing 85mph, the car feels labored, it doesn't feel like it is pulling clean. AFR is steady and no knock. Any ideas? The car was a bone stock Limited when he bought it.
Stock rebuild .030 over pistons, unknown cam with speed pro lifters
The valve job on the heads were whooped, so we put a 40,000 mile set on I had with fresh comp 980's heads are untouched other than springs
TE44 with .63 Precision housing
60 lbs injectors with standard Translator, Extender 104 race chip 25/23 timing
CAS V4 intercooler
3.5" THDP no exhaust
0 pump Vigilante 5 disc full billet trans
Walbro fuel pump, volt booster, hot wire
AC r42ts spark plugs
full tank of Q16
Last week it went 11.69@114 with 21psi and the converter locked in 3rd. The fuel pump was bad (new Walbro bought in May) and it was getting lean at the top of the track 11.7 on the wideband.
We swapped in an old Walbro from 2006 and it went to 10.2 on the wideband.
I started giving it boost. I figured 28 to 30 would be needed to break into the 10's. I got it adjusted to 30psi and 10.7 on the wideband.
Took it to the track.
11.41@115.x 30psi 10.3 AFR, 0 knock, converter locking at 105 It felt flat from 85mph on. I took some fuel out.
11.35@115.x 30psi, 11.1 AFR everything else the same. I took out some boost
11.41@115.x 27psi, 10.9 AFR I figure the converter is dragging it down
11.35@115.7 27psi 11.0AFR no converter lock tried to lower the boost
11.36@116.0x 26.5 psi 11.1 AFR no converter lock car cooled down some.
I tried to lower the boost more, but it is tough to guess with the RJC unit and the stock actuator is turned way in. The up pipe was cool after every run. 60's were all 1.51 to 1.54, 1/8mile was 7.1X @93.7 to 94.1. I figured the car should go 96 in the 1/8 and 119 in the 1/4. It seems like when the digital dash starts flashing 85mph, the car feels labored, it doesn't feel like it is pulling clean. AFR is steady and no knock. Any ideas? The car was a bone stock Limited when he bought it.