L31 into 92 RS TBI swap questions.
04-06-2019, 09:50 PM
#1
Senior Member
Thread Starter
Join Date: Sep 2014
Location: Los Angeles
Posts: 728
Received 29 Likes
on
22 Posts
Car: 92 Z28
Engine: Ramjet 350
Transmission: T-56
Axle/Gears: 3.23 Torsen
L31 into 92 RS TBI swap questions.
So I scrapped my L98 SD setup I was gonna go with after I read a recent thread about this swap with the L31 carbed. Gonna be picking up a L31 tomorrow out of a 99 truck. Got a few questions. This is gonna be going into my 92 rs conv which had a TBI 5.0. Can I use the stock fuel pump in there now? Also I don't know anything about carbs so is there a carb I can buy which is plug and play without much tinkering with it? What would you guys recommend? Also what kind of dizzy do I need. Would be great to get some part numbers. Thanks .
04-07-2019, 04:25 PM
#2
Supreme Member
iTrader: (2)
Join Date: Mar 2014
Location: South Ms
Posts: 4,422
Received 721 Likes
on
490 Posts
Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: L31 into 92 RS TBI swap questions.
Why not stay withTBI. If you upgrade it I think you would be better off.
04-08-2019, 01:10 PM
#5
Re: L31 into 92 RS TBI swap questions.
You will need to tune a carb. No off the shelf is tuned to a specific engine.
If your going to switch back to tbi to pass emissions it too will need to be tuned. You can datalog and provide this to a tuner so changes can be made to fueling. If your going to use a 4 barrel intake and a adapter for tbi you might have to get a cowl hood so it fits.
If your going to switch back to tbi to pass emissions it too will need to be tuned. You can datalog and provide this to a tuner so changes can be made to fueling. If your going to use a 4 barrel intake and a adapter for tbi you might have to get a cowl hood so it fits.
04-09-2019, 11:32 AM
#6
Senior Member
Thread Starter
Join Date: Sep 2014
Location: Los Angeles
Posts: 728
Received 29 Likes
on
22 Posts
Car: 92 Z28
Engine: Ramjet 350
Transmission: T-56
Axle/Gears: 3.23 Torsen
Re: L31 into 92 RS TBI swap questions.
You will need to tune a carb. No off the shelf is tuned to a specific engine.
If your going to switch back to tbi to pass emissions it too will need to be tuned. You can datalog and provide this to a tuner so changes can be made to fueling. If your going to use a 4 barrel intake and a adapter for tbi you might have to get a cowl hood so it fits.
If your going to switch back to tbi to pass emissions it too will need to be tuned. You can datalog and provide this to a tuner so changes can be made to fueling. If your going to use a 4 barrel intake and a adapter for tbi you might have to get a cowl hood so it fits.
05-14-2019, 09:50 PM
#7
Re: L31 into 92 RS TBI swap questions.
I use the Edelbrock 1406, 600cfm carb on my L31. I've never tuned it. Had it for 4 years now and the plugs have always looked dead on. I just drove it on a 1,300 mile highway trip and got 18 mpg. As for the dizzy, I use an Ebay new $50 one for the last 7 years.
Thread
Thread Starter
Forum
Replies
Last Post
intex1982
Theoretical and Street Racing
11
11-21-2019 09:01 PM