I have a 1995 suburban 4wd with a 4l80e and 454 engine.
Long story short I bought it cheap and decided to rebuild the engine and tranny. Engine had broken vales.
Engine is rebuilt but since I pulled the engine/tranny/tcase , I decided to rebuild the tranny too.
On the transmission I decided to keep it cheap and do a stock rebuild with transgo SK 4l80e shift kit (not the HD2) – this after doing much reading.
Well I put the whole assembly together (without the valve body) and continued to keep reading the forum subjects.
And now the dilemma:
After even more reading, I think all I should do now is just rollerize the output ( I already have new frictions, steels and bushings all pressed in) and call it a day.
Unfortunately during the rebuild days I did the following (all of which I wish now that I did not do)
Had the 3 pump modifications done
1) Under "X" drill a 3/64 (.042 - .055) hole thru side of wall in direction of arrow
2) enlarge the seal drain back hole in the pump cover with a .250” drill
3) used the new boost valve & spring supplied
I also drilled one of 2 holes in the valve body
1) Transgo pressure relief valve – drilled
2) Drill the hole in the valve body between the torque signal and "void" passages, it is a side wall – not drilled yet
So the question is can I leave the pump mods as is and get a valve body that Is not messed up ? Or do the pump mods have to go with the valve body mods?
I would prefer to go with the dual feed direct clutches after having gone in this deep, but then again I read a quote from Clinebarger that
“Dual Feeding the directs is a fantastic modification.......On rigs making north of 450 horsepower!! I rarely do this mod on a heavy duty unit, It is just not warranted.”
The suburban is only 230hp!
Any ideas how I can seal that valve body hole? (the one drilled for the pressure relief)
Thanks
Long story short I bought it cheap and decided to rebuild the engine and tranny. Engine had broken vales.
Engine is rebuilt but since I pulled the engine/tranny/tcase , I decided to rebuild the tranny too.
On the transmission I decided to keep it cheap and do a stock rebuild with transgo SK 4l80e shift kit (not the HD2) – this after doing much reading.
Well I put the whole assembly together (without the valve body) and continued to keep reading the forum subjects.
And now the dilemma:
After even more reading, I think all I should do now is just rollerize the output ( I already have new frictions, steels and bushings all pressed in) and call it a day.
Unfortunately during the rebuild days I did the following (all of which I wish now that I did not do)
Had the 3 pump modifications done
1) Under "X" drill a 3/64 (.042 - .055) hole thru side of wall in direction of arrow
2) enlarge the seal drain back hole in the pump cover with a .250” drill
3) used the new boost valve & spring supplied
I also drilled one of 2 holes in the valve body
1) Transgo pressure relief valve – drilled
2) Drill the hole in the valve body between the torque signal and "void" passages, it is a side wall – not drilled yet
So the question is can I leave the pump mods as is and get a valve body that Is not messed up ? Or do the pump mods have to go with the valve body mods?
I would prefer to go with the dual feed direct clutches after having gone in this deep, but then again I read a quote from Clinebarger that
“Dual Feeding the directs is a fantastic modification.......On rigs making north of 450 horsepower!! I rarely do this mod on a heavy duty unit, It is just not warranted.”
The suburban is only 230hp!
Any ideas how I can seal that valve body hole? (the one drilled for the pressure relief)
Thanks