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05-15-2020, 02:16 PM
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#1 |
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Registered User
Join Date: Mar 2020
Location: The Woodlands,Tx
Posts: 588
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re flash PCM
Had my pcm set up for a 308 rear end. Found out it is a 370 gear. Do I need to get my pcm re flashed to match my rear end ratio?
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05-15-2020, 05:44 PM
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#2 |
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Senior Member
 
Join Date: Aug 2018
Location: Western Colorado
Posts: 1,165
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Re: re flash PCM
Only if you want your speedometer to be accurate.
__________________
1964 Chevy C10 - Gen IV 5.3 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=768632 1968 GMC C15 - Gen III 6.0 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=772047 1969 Chevy C10 - Restoration http://67-72chevytrucks.com/vboard/s...d.php?t=809184 1978 Chevy Scottsdale K20 1993 Chevy C1500 - 5.3/T56 swapped 2008 Silverado Duramax |
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05-15-2020, 06:03 PM
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#3 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: re flash PCM
And if you have an electronic transmission and want it to shift right....
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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05-15-2020, 06:47 PM
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#4 |
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Registered User
Join Date: Mar 2020
Location: The Woodlands,Tx
Posts: 588
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Re: re flash PCM
I have a LS1 with a 460E
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05-16-2020, 06:06 PM
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#5 |
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Registered User
Join Date: Aug 2013
Location: Tecumseh
Posts: 355
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Re: re flash PCM
Send it back to your tuner. He should not charge you for an adjustment
__________________
Current project 1959 Willys = GEZR TRUK Geezer is a Latin compound word made up of two roots. Gee meaning Urine Stain and Zer meaning your pants are open! FMCDH GBU and GBA http://www.youtube.com/user/aknovaman/videos |
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