LT1-LT4 Modifications 1993-97 Gen II Small Block V8

dual 255 pump question

Thread Tools
 
Search this Thread
 
Old 07-27-2010, 10:07 AM
  #1  
10 Second Club
Thread Starter
iTrader: (8)
 
deerslayinrednek's Avatar
 
Join Date: Jan 2009
Location: Central, PA
Posts: 487
Likes: 0
Received 0 Likes on 0 Posts

Default dual 255 pump question

My rolling chassis has dual 255's in the tank(it was an ex-turbo car) and I put my cc503, stock headed engine in it.....Will I be able to just let the pumps alone or will they be pushing too much pressure for a basically stock engine? Will I need a regulator? What do you guys suggest?.....thanks

Last edited by deerslayinrednek; 07-28-2010 at 09:23 AM.
Old 07-28-2010, 09:24 AM
  #2  
10 Second Club
Thread Starter
iTrader: (8)
 
deerslayinrednek's Avatar
 
Join Date: Jan 2009
Location: Central, PA
Posts: 487
Likes: 0
Received 0 Likes on 0 Posts

Default

or should I just unhook one of them?
Old 07-28-2010, 11:26 AM
  #3  
TECH Enthusiast
iTrader: (4)
 
1toofastlt1's Avatar
 
Join Date: Mar 2009
Posts: 545
Received 0 Likes on 0 Posts

Default

trade me that set up for my inline
Old 07-28-2010, 12:37 PM
  #4  
TECH Enthusiast
iTrader: (14)
 
SPEED#1's Avatar
 
Join Date: Nov 2009
Location: Naperville,IL
Posts: 560
Likes: 0
Received 0 Likes on 0 Posts
Default

LEave em in. In case 1 pump fails you can use the other
Old 07-28-2010, 12:39 PM
  #5  
TECH Veteran
iTrader: (246)
 
robsquikz28's Avatar
 
Join Date: Mar 2008
Location: Chicago/Crown point
Posts: 4,987
Received 0 Likes on 0 Posts

Default

I have made and installed several of those kits. I would leave it in and be happy that you have a second pump. 1 if your other fails your other one will get you home. 2 if you ever need more power, the other pump will back it up. The first pump is only good up to 550 hp with the second one you can exceed 1000hp.
Old 07-28-2010, 02:38 PM
  #6  
10 Second Club
iTrader: (26)
 
Wicked94Z's Avatar
 
Join Date: Jul 2005
Location: Spokane, Wa
Posts: 3,725
Likes: 0
Received 1 Like on 1 Post

Default

you're gonna be circulating ALOT of fuel if both pumps run all the time on the street and that will do nothing but heat the fuel and eventually cause pump failure. just unplug the second pump.
Old 07-28-2010, 09:39 PM
  #7  
TECH Enthusiast
iTrader: (14)
 
SPEED#1's Avatar
 
Join Date: Nov 2009
Location: Naperville,IL
Posts: 560
Likes: 0
Received 0 Likes on 0 Posts
Default

Not unless the second pump is on a switch?!
Old 07-28-2010, 10:39 PM
  #8  
TECH Fanatic
iTrader: (6)
 
Matts94Z28's Avatar
 
Join Date: Aug 2006
Location: Charleston, S.C.
Posts: 1,213
Likes: 0
Received 0 Likes on 0 Posts

Default

I would unplug the second pump. That's asking for pump failure due to heat.
Old 07-29-2010, 02:27 PM
  #9  
10 Second Club
Thread Starter
iTrader: (8)
 
deerslayinrednek's Avatar
 
Join Date: Jan 2009
Location: Central, PA
Posts: 487
Likes: 0
Received 0 Likes on 0 Posts

Default

ok I guess I'll just unhook the second pump......thanks guys
Old 07-29-2010, 04:55 PM
  #10  
10 Second Club
iTrader: (26)
 
Wicked94Z's Avatar
 
Join Date: Jul 2005
Location: Spokane, Wa
Posts: 3,725
Likes: 0
Received 1 Like on 1 Post

Default

if the relay is inside the car... how much harder is it to plug/unplug a relay than wiring up a switch to that pump, seriously.
Old 09-01-2010, 12:10 PM
  #11  
10 Second Club
Thread Starter
iTrader: (8)
 
deerslayinrednek's Avatar
 
Join Date: Jan 2009
Location: Central, PA
Posts: 487
Likes: 0
Received 0 Likes on 0 Posts

Default

is there a wiring diagram or something to install these? Im not sure how to unhook one of them......Thanks
Old 09-01-2010, 12:17 PM
  #12  
TECH Senior Member
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

Just look at it dude, not that hard. There's not one universal way that everyone does it Lol. If it wear a turbo car they likely had it on a boost switch or wot trigger.
Old 09-01-2010, 01:02 PM
  #13  
10 Second Club
Thread Starter
iTrader: (8)
 
deerslayinrednek's Avatar
 
Join Date: Jan 2009
Location: Central, PA
Posts: 487
Likes: 0
Received 0 Likes on 0 Posts

Default

Is this a relay? Theres 2 extra wires coming from the fuel pump area, besides the main harness for the pump..... one goes to a ground and the other goes to the yellow thing below.
The thing below has 4 wires, 1 goes to the pump, one goes to ground, one goes to the rear mounted battery and the last one goes towards the front of the car but I haven't had a chance to track it down.
Old 09-01-2010, 01:16 PM
  #14  
TECH Senior Member
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

Yes. The wire going to the front of the car is going to be the trigger wire for the relay. Find where that goes and unhook it, put it on a switch, etc..
Old 09-01-2010, 01:31 PM
  #15  
10 Second Club
Thread Starter
iTrader: (8)
 
deerslayinrednek's Avatar
 
Join Date: Jan 2009
Location: Central, PA
Posts: 487
Likes: 0
Received 0 Likes on 0 Posts

Default

awesome....thanks, sorry for being a pain
Old 09-01-2010, 01:50 PM
  #16  
TECH Senior Member
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

Its cool. Hit me up if you have any other questions



Quick Reply: dual 255 pump question



All times are GMT -5. The time now is 04:36 AM.