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Questions about 305 to 350 swap that I can't find answers for

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Old Oct 5, 2010 | 04:47 PM
  #1  
Blade09's Avatar
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From: Midwest Indiana
Car: '91 RS / '17 FiST
Engine: Internal cumbustion
Transmission: 1 with a fun pedal and 1 without
Axle/Gears: 4th gen ss
Questions about 305 to 350 swap that I can't find answers for

Hey guys, I have a few starter questions that I cannot find the answers to on here so I figured I would start a thread catered to my needs.

First off to give you a little info, everything is stock under the hood of my '91 rs (305 tbi etc). I bought the car expecting to swap a 350 for the 305. Now my dad did alot of motor work back in the day and I currently have several 350s in the garage. They are older though, I could probably get details on them if necessary but I think they are out of a few 80s trucks/suvs

My first question is whether or not I can drop one of these in (cleaned up obviously) and have the stock TBI stuff bolt onto it correctly? or do I need to get a newer motor that already has its own TBI since all of these motors were carbed in their original lives?

Second, would it cause less problems to keep the TBI or just switch to a carb (I have a few holleys ranging is size)?

And finally, I have read lots of things to watch out for with this swap but can someone reiterate the most important ones please?

Sorry for being difficult, and help is much appreciated.

Thanks,
Blade
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Old Oct 5, 2010 | 05:18 PM
  #2  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Questions about 305 to 350 swap that I can't find answers for

You can put any heads and intake onto any SBC.
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Old Oct 7, 2010 | 11:33 PM
  #3  
Blade09's Avatar
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Joined: Sep 2010
Posts: 225
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From: Midwest Indiana
Car: '91 RS / '17 FiST
Engine: Internal cumbustion
Transmission: 1 with a fun pedal and 1 without
Axle/Gears: 4th gen ss
Re: Questions about 305 to 350 swap that I can't find answers for

Originally Posted by Apeiron
You can put any heads and intake onto any SBC.

Thats what I thought, but being that I am dealing with a slightly older motor out of a K5 blazer I figured I would double check.

Keep the info coming, I still have unanswered questions
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