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How to: 305 To 350 swap....everything you need to know

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How to: 305 To 350 swap....everything you need to know

Old 11-04-2017, 04:57 PM
  #351  
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Re: How to: 305 To 350 swap....everything you need to know

Hey guys My first post I know this is a old post but im hoping to get a answer I have a 95 K1500 with a 305 tbi want to replace with a 350 tbi. My computer is a BJXL. So can I just put a prom chip in it? I found a prom BYXL for a 95 c1500 with a 350 is this what I need? thanks
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Old 11-04-2017, 06:07 PM
  #352  
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Re: How to: 305 To 350 swap....everything you need to know

Byxl is for a 4.3l
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Old 11-04-2017, 06:30 PM
  #353  
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Re: How to: 305 To 350 swap....everything you need to know

Thanks for the fast reply they may have it listed wrong on eBay anyway if I find the right prom chip is that all I need or do I need to replace the computer also
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Old 11-04-2017, 06:37 PM
  #354  
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Re: How to: 305 To 350 swap....everything you need to know

You just need a memcal from a 427 ecm and one of these bcc.
http://www.gearhead-efi.com/Fuel-Inj...Information-0D
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Old 11-04-2017, 06:50 PM
  #355  
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Re: How to: 305 To 350 swap....everything you need to know

This should be a byxn for the 427 ecm 5.7l auto
https://m.ebay.com/itm/GR-3-670-EPRO...QAAOSwY~lZ9jVX
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Old 11-04-2017, 08:15 PM
  #356  
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Re: How to: 305 To 350 swap....everything you need to know

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Old 11-04-2017, 08:39 PM
  #357  
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Re: How to: 305 To 350 swap....everything you need to know

Thanks for taking your time to help out on that.so according to what you sent me all I need is the prom chip and my computer will work.so the prom chip is kinda like a hard drive for a pc. Thanks
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Old 11-04-2017, 08:41 PM
  #358  
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Re: How to: 305 To 350 swap....everything you need to know

All you need is the appropriate memcal. It’s a calibration for the ecm.
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Old 11-19-2018, 07:26 PM
  #359  
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Car: 91 camaro rs
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Re: How to: 305 To 350 swap....everything you need to know

hi all, new to this site. just purchased a 91 r/s with 305tbi. i'm starting to gather the parts to swap in a 350. i have a 350 roller cam block with a balanced assembly with flat top pistons , and lunati efi cam with 219/227,471/480 lift, on the engine stand. i was looking at a new set of heads from epm machine in oregon. alu castings,vortec 64cc chambers,190runners,202/1.60 valves ,and tbi bolt pattern, for $799 . sound like a good combo ?
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