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Old 10-18-2018, 07:11 AM   #1
54packman
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1998 SW2
2000 SC2
Default Engine swap

Quick question, can a single cam engine be replaced with a twin cam engine without changing the PCM, I just spun a bearing in the bottom end in a single cam sc1, and know where there is a good twin cam motor... or do I have to switch heads over?

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Old 10-18-2018, 08:12 AM   #2
fetchitfido
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2001 SC2
Default Re: Engine swap

If you never go above about 75% throttle it'll be fine, otherwise the SOHC PCM's idea of full throttle fueling will go lean on the DOHC and burn up valves.
Depending on year swapping the PCM is a 'bolt-in' affair and unless prices have changed they're pretty cheap (under $70).

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Old 10-18-2018, 08:44 AM   #3
54packman
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Default Re: Engine swap

ok thanks, I can see if I can also find a pcm for the twin cam motor as well too

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