Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

question on AFPR carb conversion

Thread Tools
 
Search this Thread
 
Old 05-14-2004, 03:10 AM
  #1  
Member
Thread Starter
 
WhiteGhost's Avatar
 
Join Date: Apr 2001
Location: Huntington, WV, USA
Posts: 107
Likes: 0
Received 0 Likes on 0 Posts
Car: 00 Trans Am
Engine: LS1
Transmission: 4L60E
question on AFPR carb conversion

I have a 92 TBI 5 speed.. I am going to switch out to carb in the near future.. Just a couple questions.. I will be running the edelbrock performer rpm intake with an edelbrock electric choke 600 CFM carb (1406).. also a vacumn advance distributor from jegs.. I have read the tech article saying to purchace a 3 port regulator to do this swap.. I have come to find these are not cheap.. Why exactly couldnt I just do away with the return line (block it off) and simply put a simple single inlet/outlet regulator in the line before the carb.. I dont belive i would go as cheap as the one at saw at autozone today for like 10 bucks but i would appreciate someone to explain to me the "pro's & con's" of my idea.. Secondly I know the intake and carb will perform better but after a mild cam and a set of heads (maybe l-b9 or l-69) could i acually expect a solid on the street noticable difference in performance?? the car is currently running high, high 9's in the 8th
Old 05-14-2004, 04:15 AM
  #2  
Supreme Member
 
acescarrsRS's Avatar
 
Join Date: Dec 2003
Location: Kaneohe,HI
Posts: 1,185
Likes: 0
Received 1 Like on 1 Post
Car: 89 RS
Engine: 383 in building process
Transmission: 700r4
Our fuel pumps were'nt designed to be "dead-headed" like that & will burn out without the return line. TBI guru's correct me if I'm wrong.
Old 05-14-2004, 09:34 AM
  #3  
Supporter/Moderator

iTrader: (7)
 
ShiftyCapone's Avatar
 
Join Date: Feb 2001
Location: Cincinnati, OH
Posts: 13,273
Likes: 0
Received 396 Likes on 302 Posts
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Moving this to the carb pros.
Old 05-14-2004, 09:40 AM
  #4  
Member

 
PhilM's Avatar
 
Join Date: Aug 2002
Location: Carlisle, PA
Posts: 490
Likes: 0
Received 0 Likes on 0 Posts
Car: Accepting applications...
it won't work, as he said they aren't meant to be dead headed, it will burn the pump out quick. the only type of regulator that will work is a return style. personally we have tried others with no success. yes they are kind of expensive, i think the Mallory 4309 is around $80, but it's worth it to have stable and reliable pressure.

here's mine...
Attached Thumbnails question on AFPR carb conversion-regulator2a.jpg  
Old 05-14-2004, 02:31 PM
  #5  
Supreme Member
 
br()bert's Avatar
 
Join Date: Nov 2003
Location: Philly
Posts: 1,965
Likes: 0
Received 0 Likes on 0 Posts
Car: 85 firebird
Engine: Pos 2.8 pulled and replaced with a 350 tpi motor converted to carb.
Transmission: 700r4, vette servo,shift kit, hayden 15"x8" trans cooler.
Yup its either spend the 80 bucks on the correct afpr and be happy or buy the pos cheap no return line one and have to replace the fuel pump shortly after.
Old 05-14-2004, 02:36 PM
  #6  
Supreme Member
 
RB83L69's Avatar
 
Join Date: Jul 1999
Location: Loveland, OH, US
Posts: 18,457
Likes: 0
Received 15 Likes on 15 Posts
Car: 4
Engine: 6
Transmission: 5
.... that actually should read: buy the cheapie, then replace the fuel pump and buy the right regulator later.

Sometimes the cheapest way is to actually spend more money up front. Least expensive too.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
theurge
TPI
7
08-21-2015 12:46 PM
stalkier
Electronics
1
08-21-2015 01:54 AM
redmaroz
LTX and LSX
7
08-16-2015 11:40 PM
stalkier
Electronics
0
08-13-2015 12:59 PM
stalkier
Electronics
5
08-07-2015 04:49 AM



Quick Reply: question on AFPR carb conversion



All times are GMT -5. The time now is 10:42 AM.