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mike100 · 04-02-2012

Since you have an earlier car without the CCM or stability control, it might be a lot easier to do an LSx conversion. Bill B (aka the ZF doc) did an LS1 on his 89 and he got the Atari dash working in tandem with the new engine ECM. I suspect the car still uses the orig ecm to piggy-back the speed signal and tach line to the gauges, but either way, having a pre-92 car makes for an easier installation.

I would do the LS3 over an LT5 in a lightweight coupe chassis for many reasons.

04-02-2012	#12
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,786	Re: LT5 swap into 89MY L98? Since you have an earlier car without the CCM or stability control, it might be a lot easier to do an LSx conversion. Bill B (aka the ZF doc) did an LS1 on his 89 and he got the Atari dash working in tandem with the new engine ECM. I suspect the car still uses the orig ecm to piggy-back the speed signal and tach line to the gauges, but either way, having a pre-92 car makes for an easier installation. I would do the LS3 over an LT5 in a lightweight coupe chassis for many reasons.