Ls1 engine build.
03-08-2019, 04:45 PM
#1
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Ls1 engine build. Im building a ls1 engine for a autocross guy. its a 99 corvette. The build will consist of a callies rotating assembly. shooting for 11.0 to 1 compression with a 65 cc 243 head. My question is about cam choice. The stock cam is wiped out so he needs a new one. he needs to keep the idle like stock but wants to make more power. Are there any proven cams for that combination that will idle like stock?
03-08-2019, 05:39 PM
#2
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Look for the mildest truck cams from Cam Motion and TSP. You might have to raise the idle a touch to get it silky smooth.
03-08-2019, 06:15 PM
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Negative Overlap is your friend. I would talk with Cam Motion.
i would look at something like ~222*/228* 116*+4* .600"/.585"
-6,-4* Overlap max. Should be worth 20-25+ over stock Z06 Cam
Like G said raise Idle ~200 RPM.
Just my .02
good luck
i would look at something like ~222*/228* 116*+4* .600"/.585"
-6,-4* Overlap max. Should be worth 20-25+ over stock Z06 Cam
Like G said raise Idle ~200 RPM.
Just my .02
good luck
03-13-2019, 09:38 PM
#4
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Our Sum-8719 Pro LS Stage 1 Truck Cam would be a wicked sleeper and torque producer in this application. 209/217 112 + 1 .550/.550. Works with Ls6 springs or 918 singles. Let us know if you have further questions. We could also have a dedicated custom ground for you by Comp or Cam Motion perhaps If you wanted to play some games with the idle and powerband.
Last edited by Summitracing; 03-13-2019 at 09:44 PM.