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#1 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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5.3 or 6.0 flex fuel gen 3 swap
I have seen some posts on folks dropping in a 5.3 or 6.0. Has anyone done this with a flexfuel motor to take advantage of E85? What would be different?
Thanks
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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#2 |
Registered User
Join Date: Dec 2006
Location: Braselton, GA
Posts: 245
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Re: 5.3 or 6.0 flex fuel gen 3 swap
Factory set ups have a fuel composition sensor, different pcm calibrations. If I can remember just about the entire fuel system is different. check this place out though http://www.rune85.com/. E85 is cheaper, but you get less mpg. More power though.
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#3 |
Senior Member
Join Date: Aug 2005
Location: tulsa OK
Posts: 3,070
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Re: 5.3 or 6.0 flex fuel gen 3 swap
it would be just like all the other gen3 or gen4 swaps... the e85 motors are the same with the exception of the injectors... and the computer tables
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#4 |
Registered User
Join Date: Feb 2006
Location: Oklahoma City
Posts: 588
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Re: 5.3 or 6.0 flex fuel gen 3 swap
And there is an in tank sensor to measure the level of e85. Also you will need to get it the pcm reflashed if it is a newer one. 07 models had a slight problem with the programming would only composate for 85% ethanol or below 15% I guess most people run there tanks dry and then refuel??? I don't know GM releashed a pcm update for it on all 07 models with E85.
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1970 Chevy C10 "Under Construction" ![]() 2002 Chevy S10 V6 ![]() |
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#5 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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Re: 5.3 or 6.0 flex fuel gen 3 swap
Thanks for the good info. It has crossed my mind doing at least a genIII swap with tranny especially in cali if the really start tightening down out here. Im lucky my 68 is exempt but how long will that last? That is the question.
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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#6 |
Registered User
Join Date: Nov 2006
Location: DFW area
Posts: 104
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Re: 5.3 or 6.0 flex fuel gen 3 swap
I believe other parts of the fuel system have been upgraded to withstand the long term effects of E85. Mainly fuel lines, O-rings, fittings, etc...
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Richard 1970 Chevy (growing pile of parts) 2003 Silverado SS |
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