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Type: Posts; User: dave w

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    I was not able to get a Bone Stock L31 Vortec...

    I was not able to get a Bone Stock L31 Vortec engine using TBI to run correctly with a Bone Stock 1989 TBI Chip!!! ... .... I was able to get a COMPLETELY BONE STOCK Rebuilt TBI LO5 5.7 liter TBI...
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    9,437

    There are many opinions on what makes a good...

    There are many opinions on what makes a good engine upgrade, cost vs. performance. The '7747 is adequate enough to run a L31 TBI engine, with a custom tuned PROM Chip. The '7427 is MORE than...
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