New Intake Manifold
05-10-2012, 03:06 PM
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New Intake Manifold I'm looking at buying a LS3 intake manifold and the guy is selling it with the injectors and fuel rails(factory LS3)....my question is will these injectors/fuel rails work on my 99 z28?? I know the intake manifold will bolt up but not to sure about the injectors and fuel rails??
05-10-2012, 03:18 PM
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The manifold is for rectangle heads it won't work on the 99 cars cathedral type heads. The injectors are too big(IMOP) for a stock engine and the connector is different. You would need to use a convertor harness. The rails should fit. The Ls6 or a used Fast 92 would be abetter choice.
05-11-2012, 05:04 PM
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Exactly what 1lejohn said. Ls3 manifold has rectangle port heads. Will not fit. LS1/LS6/LS2 intakes are the only stock manifolds that will fit. But an LS6 SEEMS to have a better reputation for power than the LS2 manifold, even with the fact the LS2 has a 90mm throttle body.
