Worth saving an L05 TBI and 700r4

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98 Nitro

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A Vortec 305 is an L30 and makes roughly the same power as your TBI 350. Swap the Vortec 305 heads to your 350 and you would be close to the L31 power levels.
 

Erik the Awful

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Also is my transmission also called a 4L60? My understanding was that the model name is 700r4.
Somewhere around 1988-1990 GM renamed the 700R4 to the 4L60. Around the same time they also added another accumulator and a 3-4 oil pressure switch. The name change was not tied to the additions - I believe it was still a 700R4 when that happened.

In 1993 the GMT400s switched to 4L60Es, losing the TV cable and gaining electronic transmission controls.
 
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