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 . |
Re: L31 into 92 RS TBI swap questions. Why not stay withTBI. If you upgrade it I think you would be better off. |
Re: L31 into 92 RS TBI swap questions. Don’t you have to stay emissions legal ? |
Re: L31 into 92 RS TBI swap questions.
Originally Posted by Tuned Performance
(Post 6293590)
Don’t you have to stay emissions legal ? |
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. |
Re: L31 into 92 RS TBI swap questions.
Originally Posted by Tuned Performance
(Post 6293793)
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. |
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. |
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