Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

305-350?

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Old Dec 18, 2002 | 10:24 AM
  #1  
rsscoty's Avatar
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Joined: Dec 2002
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From: Bentonville, Ar
Car: 1991 RS
Engine: 305 TBI
Transmission: auto
305-350?

Okay guys, before you start thowing things at me please t
hear me out. Just picked up a '91 RS with a well worn 305. A new motor is definetly in the planning stages, but I'm not sure if I should get a 350 or try and play with the 305.

If I go to the 350 will all of my TBI stuff still bolt up? Is it a simply motor swap or are there other things involved?
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Old Dec 18, 2002 | 10:58 AM
  #2  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
It's a simple motor swap with a few other things involved.

Larger injectors are typically recommended. Larger exhaust is a must if you want to get anything close to the increased potential out of the larger engine.
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Old Dec 20, 2002 | 06:38 AM
  #3  
MdFormula350's Avatar
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Joined: Nov 2001
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From: Maryland; USA
i would go right to a 350 if you can! the swap should be real easy since your already had a v8 in the car.. good luck
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Old Dec 22, 2002 | 02:48 AM
  #4  
SilverSub122's Avatar
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From: Selma, Ca (8th layer of hell in the summer)
ya know...im torn between the same decision. my l03 has 140k+ mi on it and i dont know if i want to save a few bucks and play with the 305 or go with the 350. i will probably end up with the 350 cause i have to be able to flex on any other 3rd gen i come up on...especially since there is a high school brat that lives 3 blocks from me with the same car as mine (coral blue 89 RS). i want that kid to know his car in inferior when i rumble by him. ....i have issues
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