k5 blazer sending unit - LS1TECH - Camaro and Firebird Forum Discussion

Notices
Conversions & Hybrids LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

k5 blazer sending unit

Reply

Old 06-14-2018, 10:15 PM
  #1  
Registered User
Thread Starter
 
Join Date: Jun 2018
Posts: 2
Default k5 blazer sending unit

I am putting a 5.3 vortec in a 1991 k5 blazer-since the blazer already had tbi I was going to run a stock sending unit with the ac delco ep381 pump-but I got to looking at it and my stock sending unit has 4 line connections coming off of it- 1 pressure, 1 return, 1 that is the vent that goes to the filler neck and 1 that I believe (its been awhile since I tore it down) goes to the charcoal canister/evap system-I don't plan on running this charcoal canister/evap deal with my swap and I don't like the idea of having an open line there for no reason-is there a 3 port sending unit that will work on a blazer 31 gallon tank? for you guys who have actually done it what have you done with the extra port? or does it actually serve another purpose in a swap? any help would be appreciated.
awsumpossum is offline  
Reply With Quote
Old 06-14-2018, 10:33 PM
  #2  
TECH Senior Member
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 6,126
Default

If not needed, cap it off. No danger in that.
G Atsma is offline  
Reply With Quote
Old 06-15-2018, 09:38 AM
  #3  
jmd
TECH Addict
iTrader: (4)
 
Join Date: May 2002
Location: T56th Street, Aridzona
Posts: 2,359
Default

Look at the stock use of the evaporative emissions line in your truck, and in the donor vehicle. Keeping it helps keep vapors and gas smell contained as the fuel system can expand with temp. changes. There is a simplified evap setup used on the ERod kits too. The best part is your truck already has the lines installed to use it.
jmd is offline  
Reply With Quote

Thread Tools
Search this Thread
Quick Reply: k5 blazer sending unit


Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: