TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

quick question, 350 TB-on an 88 l03?

Thread Tools
 
Search this Thread
 
Old 02-18-2011, 01:09 PM
  #1  
Junior Member
Thread Starter
 
First_Formula's Avatar
 
Join Date: Dec 2010
Location: Minnesota
Posts: 81
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Formula Firebird (deceased)
Engine: l03 V8
Transmission: T-5 manual
quick question, 350 TB-on an 88 l03?

Hey I need a replacement throttle body for my 88 'Bird and Nobody in the state of Minnesota has a 5.0 throttle body in a junkyard and a new one is 300 dollars so F that lol
But anyway i found about 200 350 throttle bodies so I was wondering if i could use the 350 throttle body on my stock 305 with the stock 305 injectors.

I don't know if the vacuum lines are the same or if the fuel feed/return deals are similar or if my air cleaner will sit on top of the 350 TB unit...
anybody know?
Old 02-18-2011, 01:23 PM
  #2  
Member
 
jim_in_dorris's Avatar
 
Join Date: Dec 2007
Posts: 152
Likes: 0
Received 0 Likes on 0 Posts
Re: quick question, 350 TB-on an 88 l03?

Originally Posted by First_Formula
Hey I need a replacement throttle body for my 88 'Bird and Nobody in the state of Minnesota has a 5.0 throttle body in a junkyard and a new one is 300 dollars so F that lol
But anyway i found about 200 350 throttle bodies so I was wondering if i could use the 350 throttle body on my stock 305 with the stock 305 injectors.

I don't know if the vacuum lines are the same or if the fuel feed/return deals are similar or if my air cleaner will sit on top of the 350 TB unit...
anybody know?

Yep, the only difference between them is the injectors. A 4.3 throttle body is also the same size. The only thing I would do after thoroughly cleaning the JY throttle body is the ultimate upgrades. (grind the ridges, injector pod spacer and adjustable fuel pressure regulator and if it fits a throttle body spacer.) If your current 305 throttle body pressure regulator is ok, and you don't want to go with an AFPR, use the injector pod off your existing throttle body and your fuel pressure will stay the same as it is now. I would also have the injectors cleaned and flowed while I was at it. witchhunter.com does a great job at a more than reasonable cost.
Old 02-18-2011, 01:38 PM
  #3  
Junior Member
Thread Starter
 
First_Formula's Avatar
 
Join Date: Dec 2010
Location: Minnesota
Posts: 81
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Formula Firebird (deceased)
Engine: l03 V8
Transmission: T-5 manual
Re: quick question, 350 TB-on an 88 l03?

Originally Posted by jim_in_dorris
Yep, the only difference between them is the injectors. A 4.3 throttle body is also the same size. The only thing I would do after thoroughly cleaning the JY throttle body is the ultimate upgrades. (grind the ridges, injector pod spacer and adjustable fuel pressure regulator and if it fits a throttle body spacer.) If your current 305 throttle body pressure regulator is ok, and you don't want to go with an AFPR, use the injector pod off your existing throttle body and your fuel pressure will stay the same as it is now. I would also have the injectors cleaned and flowed while I was at it. witchhunter.com does a great job at a more than reasonable cost.
Awesome! Off to the junkyard I go.
Thanks alot for the quick response!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jake_92RS
Tech / General Engine
8
01-28-2020 10:37 PM
NinjaNife
Tech / General Engine
27
08-23-2015 11:49 AM
redmaroz
LTX and LSX
7
08-16-2015 11:40 PM
happyhapka
TPI
3
08-15-2015 04:42 PM
jahblah
Tech / General Engine
5
08-12-2015 05:54 PM



Quick Reply: quick question, 350 TB-on an 88 l03?



All times are GMT -5. The time now is 10:25 PM.