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89 Intake on 88 block?

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Old 05-05-03, 05:00 PM
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89 Intake on 88 block?
Since I'm gonna need to do a rebuild on my 88 GTU engine, will there be any hang-ups (electrical or otherwise) with going to the 89-spec intake to boost hp somewhat?

Also, thanx for the info on the GTU/GTUs differences!!!
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Old 05-05-03, 05:08 PM
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You'll have to mount the single TPS from the series 4 on it, (fairly easy and straightforward) as well as devising a control for the VDI and aux ports. Don't suspect you have to pass emissions in Ohio, correct?
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Old 05-05-03, 05:12 PM
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Is it true that if you change the s4 intake manifold to an s5 will give you more hp??
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Old 05-05-03, 05:12 PM
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A slight increase, as they used bigger runners, and the VDI! :-D
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Old 05-05-03, 05:13 PM
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sorry an s5 manifold to an s4 engine
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Old 05-05-03, 05:14 PM
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but how much hp is that like 2 at least?
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Old 05-05-03, 05:16 PM
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some people claim 5-10, haven't seen any dyno sheets of it myself, I think someone posted one quite a while ago but I've long lost it.
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Old 05-05-03, 07:26 PM
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I think this is what your looking for.

http://homepage.mac.com/carldavis/intake/intro.html
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