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Personally I would not risk boosted launches on my truck lol. You can build it to the moon, but boosted launches are hard on the driveline and will find the weak link.
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The OD switch can be replaced by just using a small pocket screwdriver to pop the old one out, unplugging the two wires to it, plug the wires into the new switch and snap the switch into the end of t
My 98.5 auto bogs when the TCC locks up at light throttle. With OD off it locks up at 35mph, otherwise it locks up at 50mph. However my speedo is roughly 5mph fast compared to actual, so subtract those readings by 5.
After running custom tunes off this board, it seems like timing of 17/20/25/28 on the Quadzilla makes more lowend torque than my previous timing of 16/19/24/26, and when the TCC locks up its not as prone to bogging and shaking the entire truck to bits. I am confident I have no boost leaks based on the great off idle torque my truck makes, and the supreme lack of smoke (also thanks to going back to a stock stall torque converter).
This takes us to my questions:
1) With ARP 625 studs and o-rings like I have, can I throw all the timing in the world at the motor, or will I hurt it at some point? I ask becasue perhaps I can keep increasing lowend timing and gaining power, hopefully to negate my problem all together with another degree or two of timing.
2) I just installed a lockup switch. My problem is lockup is occuring about 10mph too soon. Well, the lockup switch didnt stop the truck from locking the TCC, it just enabled me to lock it even sooner. Not exactly solving my problems here. This leads to 3...
3) Is there a way for me to disable TCC lockup, so I can have the truck only lockup when I command it? This is not practical, but the alternative solution I have been employing is pressing OD off just before 50mph so lockup in 3rd gear is smooth. But then I have to disable OD off at every stop light, because if I leave it on and take off again when it locks at 35mph its ultra harsh. Worse than 4th gear 50mph OD lockup. Not practical at all.
Thanks.
Edit; these lockup conditions I speak of, bogging the truck, shaking and rattling the entire drivetrain and cab, happens only at light throttle. If Im wide open or even accelerating hard, the truck will lockup 10mph later or more, and lockup will be perfect. Problem is, most the time daily driving I am at 10-20% throttle whilst crusing. And the roads here are commonly 50mph, so I have that harsh terrible lockup at normal cruising speeds, aka every street, every day. Drives me nuts.
Edited by rogerash0