12 valve conversion
#1
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
#2
#6
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did you do a 12 valve conversion too
Last edited by 99_cummins; 01-09-2010 at 02:55 PM. Reason: Automerged Doublepost
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