Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Where to Start

Old Oct 10, 2019 | 04:22 PM
  #1  
bongo's Avatar
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Default Where to Start

Morning All

Recently purchased a 78 Trans am and it had a LS1 5.3 conversion in it.
Already had to rebuild the 4L60E thats attached to it.

My question is it starts idle high and I cant find where or why, I am assuming a vacuum leak but it starts differently
every time..aaaarrrggghhhh .

Second should I just take it to a tuning shop and have the computer reprogrammed so I can get a base line
or????

What should be my steps to a successful knowledge base of the engine and getting the @#$%^ running nice.

TIA
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Old Oct 10, 2019 | 05:13 PM
  #2  
drdave88's Avatar
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From: Waterford, MI
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Does it have the DLC (Data Link Connector) so you can hook up a scan reader and pull codes? What is RPMs at on start up? Does it idle down as it warms up or stay high?
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