Good daily driver cam, and lesser agressive street/strip cam than our SI5. Typical LS1 powered vehicles will make 385RWHP with supporting bolt-ons and 400+ with ported heads. LS2 powered vehicles will make 10-15 more. Lope will be audible, but not excessively "choppy". LS3 powered vehicles will make an easy 400RWHP . Automatic cars should have a 3000+ stall speed but ideally 3200-3400. Duration is 228/228 @.050, Lift is .588/.588. We offer it on a 112LSA for manual trans and 3200+ stall automatics, and a 114LSA for 3000-3200 automatic trans vehicles.
Good daily driver cam, and lesser agressive street/strip cam than our SI5. Typical LS1 powered vehicles will make 385RWHP with supporting bolt-ons and 400+ with ported heads. LS2 powered vehicles will make 10-15 more. Lope will be audible, but not excessively "choppy". LS3 powered vehicles will make an easy 400RWHP . Automatic cars should have a 3000+ stall speed but ideally 3200-3400. Duration is 228/228 @.050, Lift is .588/.588. We offer it on a 112LSA for manual trans and 3200+ stall automatics, and a 114LSA for 3000-3200 automatic trans vehicles.
Our cams are custom ground for us by Comp Cams. 3-bolt core is standard, but available in single bolt for newer GenIV engines. We also offer a 3 bolt cam conversion kit for those with an original single bolt LS3 who want to upgrade to the stronger 3 bolt design.
SKU | SI4 |
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Manufacturer | Speed Inc |
Application Guide | All GenII and GenIV powered GM Vehicles |