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Vortech supercharger install has begun

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Old Aug 30, 2023 | 09:24 PM
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Default Vortech supercharger install has begun


Tearing everything off the front of the engine to start. Swapping to a serpentine setup. Vortech doesn’t make a bolt on kit for the C3, so having to improvise/fab some of it. A few things will have to be clearanced. The factory hood will NOT fit, so looking into an L88 hood a few inches higher than stock. Had to purchase various parts from other cars, like a Firebird ac/tensioner assembly, a different alternator, long water pump, crank pulley, etc. The factory power steering pump will work, just have to swap the pulley. Went with Vortech’s fuel pump and bypass valve. Only running 5psi to start. Will post more pics as this project progresses.
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Old Aug 30, 2023 | 10:41 PM
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Very cool build! Are you doing a blow through carb or EFI? How are you handling timing retard with boost?

Looking forward to following along on this! I put a Kenne Bell blower on the 4.0 in my Jeep a couple of years ago!
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Old Aug 31, 2023 | 08:14 AM
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Just out of curiosity, what made you go the Vortec route over a TorqStorm supercharger?
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Old Aug 31, 2023 | 01:14 PM
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Originally Posted by Arg0413
Very cool build! Are you doing a blow through carb or EFI? How are you handling timing retard with boost?

Looking forward to following along on this! I put a Kenne Bell blower on the 4.0 in my Jeep a couple of years ago!
Thanks! No retard needed other than the driver! Lol Unless I up the boost in the future. Using a Holley Q series blow through carb.

I went with Vortech because of their customer service, and parts availability.
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Old Aug 31, 2023 | 05:15 PM
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Subbing to this as I am considering doing this as well.
What are your engine specs (compression, cam, etc)?
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Old Aug 31, 2023 | 05:40 PM
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Originally Posted by wwiiavfan
Subbing to this as I am considering doing this as well.
What are your engine specs (compression, cam, etc)?
Stock on a recent rebuild. I’m using Vortech’s recommended kit.
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Old Sep 1, 2023 | 10:54 AM
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Originally Posted by PhenyxC3
Thanks! No retard needed other than the driver! Lol Unless I up the boost in the future.
lol

Should be a blast to drive when it's done. Even a mere 5psi will wake up that 350 like it just did a line of coke.
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Old Sep 1, 2023 | 01:14 PM
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I wonder if you might end up adding more boost if the cam overlap bleeds off cylinder pressure.
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Old Sep 1, 2023 | 02:18 PM
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Look at my build thread, I've already done this. Mine is EFI but same issues. No hood will work if you are using the F-body style bracket that comes from vortec.Also you will need to notch the front K-member to clear the pulleys.

I've since moved onto a boosted LS3 but if you have any questions feel free to ask.
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Old Sep 1, 2023 | 03:16 PM
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Originally Posted by nyciti
Look at my build thread, I've already done this. Mine is EFI but same issues. No hood will work if you are using the F-body style bracket that comes from vortec.Also you will need to notch the front K-member to clear the pulleys.

I've since moved onto a boosted LS3 but if you have any questions feel free to ask.
Thank you! I’m using the older style kit.
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Old Sep 1, 2023 | 03:48 PM
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Yup that's what I used same rules apply. Definitely see my thread
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Old Sep 1, 2023 | 03:54 PM
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Originally Posted by nyciti
Yup that's what I used same rules apply. Definitely see my thread
Was just reading through it. No prob, didn’t plan on running a hood for awhile anyway. Lol Think I’ve got everything sorted out. The pulleys were more of a challenge than anything. Have everything pulled off the front, and tapping the oil pan tomorrow for the return line.
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Old Sep 3, 2023 | 08:13 PM
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Making progress. Water pump on. Mocked up a few pulleys to check the alignment. So far so good.

Last edited by PhenyxC3; Sep 3, 2023 at 10:12 PM.
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Old Sep 3, 2023 | 09:43 PM
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unless you want to get into the 800 plus hp range your way better just building a reliable 650ish engine .
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Old Sep 3, 2023 | 09:54 PM
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I had to build custom brackets to get the supercharger mounted low enough to clear the C3 hood:








Boost-driven timing retard is imperative for proper max performance:




..and attention to fuel delivery pressure and volume is absolutely essential:









Lars

Last edited by lars; Sep 3, 2023 at 10:00 PM.
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Old Sep 4, 2023 | 03:33 PM
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Very nice! I have a plan for the hood where the blower touches. Cutting both sides and adding vents to give it enough clearance.
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Old Sep 5, 2023 | 07:58 AM
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I would not trust a msd btm boost retard on a expensive engine , I would put car on chassis dyno and find out what it likes wide open and lock it out or set up with around 16 to 20 initial and all in at 2500 rpm and with low compression you don't have to worry about hard starting .
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To Vortech supercharger install has begun

Old Sep 6, 2023 | 01:09 PM
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Making progress. Had to notch the K member for the pulleys. The p/s pump pulley has to be removed, then installed on the supercharger bracket, then reinstalled, then the bracket can be installed on the engine. Must be done in that order due to clearance. Thank you to nyciti for the help with the K member!
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Old Sep 6, 2023 | 05:33 PM
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So everything lines up with the exception of the alternator, which sits 1/2” too far back. The span on the mounting bolts is 5 1/4”. Any ideas here?
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Old Sep 7, 2023 | 05:10 PM
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Good luck with your project! Here's the ProCharger version of what you are doing...
nyciti and I worked on similar projects a few years ago.



I won't be able to help you that much since the two installs - although similar - had some unique differences. The challenges your are working through now - mounting the SC / accessories - were different.
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