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Old 12-11-2009, 12:37 AM   #1
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Default Questions about putting HD trans upgrade on current 3.05 ratio

I wish i could take it to you but im here in miami florida... anyways yeah i think i like those kits im getting payed tomorrow so ill buy it and when i get it ill send you mine? Also I have a question for the top swap i have a 3.05 FDR i think will i need a reluctor wheel for the HD swap in my tranny? Hold that last one for me please boost
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Old 12-12-2009, 09:17 PM   #2
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You will actually need to reprogram the pcm for the difference in gear ratio. Your ending ratio will go from 3.05 to 3.29 when you toss in the HD diff.
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Old 12-13-2009, 02:22 AM   #3
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Damned then i guess ima have to get a special pcm from intense when i do the HD upgrade? What will happen if i put in the diff without the pcm change? i imagine the transe will rip itself apart
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Old 12-13-2009, 05:45 AM   #4
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Pretty much the same when I went from a 3.06 to a 2.84 diff. Your PCM will shift your trans at the wrong RPM points. The PCM will think your going faster than what you really are, or vice versa depending which way you are going with your final drive.
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