98 12 valve 3 or 4gsk with auto trans?
#21
#23
Well tuning the pump is an odd thing...
When I put mine in and I could free rev to probably 4500 my tach doesn't go up that high. So
To get mine just to rev to 4k I had to back my screw out to .35. I had taken all the shims out too. I had installed industrial injection 4500 rpm springs and set it the screw back in to .45 so I could get back to 4500.
Until you got your springs your right foot will protect your engine.
Just be forwarned with the 4k in I managed to pull a 1/2 mile drift on the way to class today, since the truck has more usable rpms
When I put mine in and I could free rev to probably 4500 my tach doesn't go up that high. So
To get mine just to rev to 4k I had to back my screw out to .35. I had taken all the shims out too. I had installed industrial injection 4500 rpm springs and set it the screw back in to .45 so I could get back to 4500.
Until you got your springs your right foot will protect your engine.
Just be forwarned with the 4k in I managed to pull a 1/2 mile drift on the way to class today, since the truck has more usable rpms
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