396c4 said:
I put a hot cam in with the motor in the car but you have to
pull the rad and undo the mounts to lift the front of the motor to get the damper off. The high cross member is a pain and always in the way. Also, undo right side rack clamp to push it forward to get clearance. Takes some patience to get the damper puller in place and pull the damper hub. You also need to be able to hold the motor from turning when you're trying to remove or torque the damper bolts. With the rad and condenser out, the cam will come out/ go in. I also put the high performance chain in, new Comp Cams high rev hydraulic rollers and MSD Opti. The rest was straight forward. I use Innovate wideband O2s and Accel 26# injectors to start with and not having problems getting enough fuel in but there does seem to be issues right to left due to restrictions in the cross-over tube between the rails (getting another pair welded with independent connections). I put new aluminum rad in while it was all apart because the GM one is pretty thin and run a 180 t'stat.
Idles fine, although the MAP comes up quite a bit and the EGR points have to be reset or it will be on all the time and lean it out when you don't want it. It makes more power for sure but takes a fair but of tuning to correct the tables and MAF and our OBDII is not like the LS ECM. I have a similar Comp Cams profile for the next motor.
If yours started out life as an LT4 shouldntit already have 28# injectors? and NO egr?
|UPDATED|7/27/2015 6:35:15 AM (AZT)|/UPDATED|
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80 4Speed
96 LT4
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