12 valve conversion
 

i did a 12 valve conversion because i had the 99 and my block cracked. everything seems to work good i just do not have overdrive. but i am also using my 24 valve transmission. i was wondering if because the motor i bought is a manual and does not have a throttle positioning sensor if that could be the reason. let me know thanks

Yep that's the problem. We did the exact same thing with my buddies 99. With his though it wont shit out of 2nd. We are tired of messing with it so we're putting an NV in.

does your stock tach work? if so how did u manage that?

put a pot in place of the tps real easy to do and you can also put a lockup switch in:jump:

for overdrive on mine, i put in a lock up and also put a lock up switch in, cause neither of mine worked

i already have done that

---AutoMerged DoublePost---

did you do a 12 valve conversion too

yes i did. when we got it goin, it wouldnt shift into 4th or lock the tc up. but i tried and tried to get the tach to work, with no luck. called up haisley and schieds, they told me i would have to get a 98 12v harness and computer to get it to work, or get an aftermarket tach.

i used the 98 twelve valve wiring harness put i used the 24 valve pcm box. should i put the twelve valve pcm one in

idk, thats what i was told, but i couldnt find one with a good enough price. does ur tach work? did the 12v u put in have the spot for the crank sensor in the block?