GPI – LS3 Cam
From: $439.00
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Pound for pound – the best 3 Bolt LS3 / LS2 / LS1 cam on the market. These cams have become the benchmark for Camaro’s and Corvette’s around the country.
Want to learn why GPI makes the best performing Camshafts you can buy!
GPI R&DWant the complete Cam Install Package?
Complete LS3 Cam Kit(Please note: These are high lift 3 bolt cams. Dual .660 valve springs, hardened pushrods, and 3 bolt conversion is required for install. Refer to Cam Install Package above for the required components.)
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Description
Overview
These cams are our most popular product, and for good reason – they are pound for pound – the best cams on the market for your LS3 / LS2 / LS1. These cams have become the benchmark for Camaro’s and Corvette’s all over the country.
Our GPI Camshaft and Head packages have been dominating race tracks, and taking Camaro’s and Corvette’s deep into the 10 second range for customers all over the country.
Although these camshafts were designed with naturally aspirated motors in mind – because centrifugal blowers maintain a very similar, linear power curve as NA – these cams work beautifully with centrifugal blowers. Great option to keep in mind if you are naturally aspirated now – but are later planning on adding boost.
We have 4 different iterations of this very popular camshaft – from mild performance increase with nearly stock manners, to all out N/A race applications.
Choose your spec
Works well with a stock torque converter, offers stable idle, excellent low end torque, and smooth lobe design for quiet valve train operation and longevity. We designed this camshaft for use in cars with minimal modifications. Idles stable around 675 RPM, and is very strong off idle to 6600 RPM.
Tailored for the street / strip individual that runs a 3000+ RPM converter. It rivals the torque output of the SS1 but packs on about 10-15 additional horsepower up top. Strong to 6700 RPM. This cam requires 3200+ RPM converter and increased rear end gear ratios are recommended.
This is our most popular street / race cam, and for good reason. This is the perfect cam for the hardcore street / strip enthusiast, and makes more torque and horsepower than our SS1 and SS2 VVT cams. Very strong to 6900 RPM. Track tested, developed,and proven! This cam requires 3600+ RPM Converter, and loves 3.91 gearing.
All out performance application. Very street able, requires 4000 plus converter, prefers 3.91 to 4.10 gearing and requires no flycutting. Track tested and developed 10 second cam with heads and supporting mods. Strong to 7200 rpm. Specifically designed to clear on stock heads and gaskets with no milling.
Designed for 415+ CI stroker combinations with valve reliefs for increased PTV clearance and at least 11:1 compression (12:1 recommended for pump gas, 13:1+ for E85). All out performance with strong power to 7000+rpm. Very streetable with appropriate combination and tuning. Requires a 4000+rpm converter, and works well with 3.91+ gearing. Only available in 8620 hardened core.
LS3 Camshaft Media
2011 Camaro SS
- GPI SS4 NFC Cam
- Stock heads (no milling)
- Kooks Headers
- Ported stock intake
- Th400 with circle d 8” converter
- Aerospace brakes
- 15’s on welds and mickeys
Stock diff with 4.10s - GPI Tuning
2015 Camaro SS 1LE
- GPI SS3 Cam
- GPI Ported Stock Intake,
- UDP
- ARH LTs with HF Cats
- NPP Mufflers
Complete cam install packages
Questions & Answers (91)
Customer questions & answers
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Para un camaró 2010 ls3 manual cual sería el árbol para mejorar la potencia que sea calle
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Q Para un camaró 2010 ls3 manual cual sería el árbol para mejorar la potencia que sea calle answer nowAsked by on July 19, 2026 1:23 amA No habla espanol but its relative to the combination on the vehicle but likely ss1 is best option for you
Building a Frankenstein type ls that I’ve acquired some random parts for Ls3 long block Prc247 heads 68cc chamber Fast lsxrt 102 1.75” longtubes Currently have a ms3 cam for it 238/242 .600 112lsa Would your ss4 cam suit this best I do have your ptv cutters as well if I need them It’s going in a 3500lbs t56 4.10gears s10 60/40 street/drag
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Q Building a Frankenstein type ls that I’ve acquired some random parts for Ls3 long block Prc247 he...... Read more answer nowAsked by on June 29, 2026 12:17 pmA I would suggest filling out our custom cam worksheet for your application https://gwatneyperformance.com/gpi-custom-cam-worksheet/
Can I use the ss2 in my 5.3L LS truck??
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A I wouldn't advise it that cam is too big for a 5.3
Good afternoon yr LS3 ss3 cam I have aL96 that boring out to a 6.2. Stock flat top pistons and 823 heads not milled with a truck intake with 50lbs flex injectors. Tubro 400 with a 4000 stall 4.56 gears. Will this can work for me without flying cutting pistons. This is a street strip 71chevelle . Thanks for your time!
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Q Good afternoon yr LS3 ss3 cam I have aL96 that boring out to a 6.2. Stock flat top pistons and 82...... Read more answer nowAsked by on January 30, 2026 3:40 pmA It should but always best to clay and validate
What does the idle rpm on an SS4 nfc cam call for?
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Q What does the idle rpm on an SS4 nfc cam call for? answer nowAsked by on January 14, 2026 1:39 pmA Every combo is different but I would imagine 8-900
SS3 cam for a 430hp LS3, crate engine efi engine. With proper tune, e38 ecu what could total HP end up being. Thanks
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Q SS3 cam for a 430hp LS3, crate engine efi engine. With proper tune, e38 ecu what could total HP e...... Read more answer nowAsked by on December 18, 2025 5:58 pmA Lot of variables there based on additional bolt on mods, ported heads etc but most ss3 cars will make around 470 wheel dependent on drivetrain loss
Is there a kit for the ss1 to get rid of dod/vvt/afm and includes everything I would need like all new lifters, springs, gaskets, push rods
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Q Is there a kit for the ss1 to get rid of dod/vvt/afm and includes everything I would need like al...... Read more answer nowAsked by on November 24, 2025 5:09 pmA https://gwatneyperformance.com/l99-to-ls3-conversion-kit/ref/10/#camshaft
Can i add boost to a SS4 NFC on a 6.2 and have decent results?
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Q Can i add boost to a SS4 NFC on a 6.2 and have decent results? answer nowAsked by on November 10, 2025 8:24 pmA This cam would work with a centri blower like a procharger
What is the best cam for c6 ls3? I want max performance. Ss3 or ss4 ? With stock heads w/o porting and stock manifold w/o porting
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Q What is the best cam for c6 ls3? I want max performance. Ss3 or ss4 ? With stock heads w/o portin...... Read more answer nowAsked by on August 14, 2025 9:55 pmA Email us with complete car set up to give you a better recommendation support@gwatneyperformance.com
What style manifold for a ss3 cam long runners or short
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Q What style manifold for a ss3 cam long runners or short answer nowAsked by on August 6, 2025 8:35 pmA Feel free to email in to support@gwatneyperformance.com. We will need more details on the build, what engine, what heads, what vehicle, what trans set up and its intended use to make the right suggestions.
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Can shaft everything I expected and more, great performance, quality, and of course sound( LOL) . Very pleased with it. I used the non VVT SS3, love it.
One of the best companies I found to offer for the stuff I need do do the swap the only major thing is that they should make a kit with drop in parts like I know most of the kit is the only thing that really isn’t is if you get certain lifters you will need different pushrod length but I know people might have different setups which makes sense but just like have a drop in kit that is know to work with those certain lifters and pushrods while being like completely stock as I would assume alot of people are doing other than that small little thing I cant belive the shipping is only like 2 days for regular shipping it might differ from where you live but they ship everything super fast and it comes super fast and customer support is top notch and the kit literally gives you everything you would need i would give it a 9/10
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Custom cam is badass!!