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LT1 / LT4
GPI – LT4 / LT1 / L83 / L86 Blower Cam Install Package for 6th Gen Camaro ZL1 / C7 Corvette Z06 / GM Trucks 5.3L & 6.2L
Varies Based on Options
Looking to upgrade the camshaft in your 5th Gen Chevrolet Camaro SS or C6 Corvette, and want all the essential components to complete the install?
Vehicle Applications:
2017-2020 Chevrolet Camaro ZL1
2015-2019 Chevrolet Corvette Z06
All Positive Displacement Blower Gen 5 LT Powered Cars and Trucks
Description
The Wait is Finally Over!
For those of you with a 2016+ Camaro SS, or a 2014+ Corvette – we have our Gen 5 LT Cam Packages in stock, and ready to ship!
Why GPI?
Gwatney Performance has a long history with VVT Camshafts, and we have built a large portion of our reputation around them. As many of you know – we have pioneered the way, and pushed the limits of the Variable Valve technology for years with the L99 and LS Truck Platforms.
Our Gen 5 LT VVT Camshafts have been on the market (and dominating racetracks around the country) for years – but we’ve held back releasing our complete Gen 5 LT cam package until now…
Why the Wait?
We’ve done a huge number of cam installs on the Gen 5 LT’s, and unfortunately we’ve found the LT’s to be plagued with a cam control issue.Â
…we’ve found the LT’s to be plagued with a cam control issue.
Because there was no product on the market to solve the issue – it was up to us to diagnose it, create the solution, test it, and then release it to market. We’ve been hard at work on this!
But first, the explanation…
Explaination of the Cam Control Issue…
When retarding timing at the top of the RPM range, we noticed a frequent variation between our desired cam position and the actual. Sometimes it would even retard timing when not commanded to at all.
Next, we found that this behavior was becoming more and more exaggerated as the oil temps reached higher levels. This was leading to 8-10 degrees of timing retard, and power falling off at the top end after several pulls – which is obviously undesirable (you certainly don’t want each run of the night to be slower than the previous!). Â
We had successfully found the problem, but this was only the start.Â
It was time to build a new Cam Phaser Limiter Kit…
This was leading to 8-10 degrees of timing retard, and power falling off at the top end after several pulls – which is obviously undesirable (you certainly don’t want each run of the night to be slower than the previous!).
The Solution!
We are happy to announce the official release of our GPI Gen 5 LT Cam Phaser Limiter Kit that completely resolves the cam control issue. As this completely solves the cam control issue – we are happy to bring our Complete Gen 5 LT Cam Packages to market!
(*These are included with all LT Cam Packages)
Camshafts & Valvetrain
$79.00
In Conclusion.
In keeping with the very high standards GPI has become known for – we are proud to have created the most reliable, most consistent, and most powerful series of Gen 5 VVT Camshafts in a package that allows for straightforward install – and complete control over tuning!
Available Now!
Planning a DIY?
Don’t forget to pickup the GPI Valve Spring Compressor Tool designed specifically for the LT Heads!
gpi lt1 (Gen 5) camshaft
These cams are our most popular product, and for good reason – they are pound for pound – the best cam on the market for your LT1, LT4, L83, or L86 with a positive displacement blower. These cams have become the benchmark for 6th Gen Camaro’s / C7 Corvette’s / GM Trucks with Positive Displacement Blowers.These camshafts were designed with positive displacement blowers in mind – factory/ported LT4 blowers, Whipple, and so forth. With centrifugal blowers, we recommend using our standard SS1 LT through Track Attack camshafts, as they maintain a very similar, linear power curve as NA.We have 3 different iterations of this very popular cam (and the option to do a custom spec cam) – from mild performance increase with nearly stock manners, to all out N/A race applications.
cam options
LT PD1 / L83 PD1
Cam Specs:
LT1/LT4/L86 (6.2L) – 218/246 .639/.639 116+3
L83 (5.3L) – 210/230 .630/.612 117+4
LT1/LT4/L86 (6.2L)
Works well with the stock torque converter, offers stable idle, excellent low end torque, and smooth lobe design for quiet valve train operation and longevity. We designed this cam for use in cars with minimal modifications. Idles stable around 725 RPM, and is very strong off idle to 6400 RPM. Requires 0* phaser limiter.
L83 (5.3L)
Works well with the stock torque converter, offers stable idle, excellent low end torque, and smooth lobe design for quiet valve train operation and longevity. We designed this cam for use in trucks with minimal modifications. Idles stable around 725 RPM, and is very strong off idle to 6400 RPM. Requires 0* phaser limiter.
LT PD2 / L83 PD2
Cam Specs:
LT1/LT4/L86 (6.2L) – 226/250 .639/.639 116+3
L83 (5.3L) – 216/232 .630/.612 117+4
LT1/LT4/L86 (6.2L)
Tailored for the street / strip individual that runs a 2500+ RPM converter. It rivals the torque output of the LT PD1 but packs on about 10-15 additional horsepower up top. Strong to 6700 RPM. Can run a factory converter but an upgraded converter is recommended. Requires 0* phaser limiter.
L83 (5.3L)
Tailored for the street / strip individual that runs a 3000+ RPM converter. It rivals the torque output of the L83 PD1 but packs on about 10-15 additional horsepower up top. Strong to 6700 RPM. Requires 0* phaser limiter.
LT PD3
Cam Specs:
LT1/LT4/L86 (6.2L) – 232/256 .639/.639 116+3
L83 (5.3L) – 224/240 .630/.612 116+4
LT1/LT4/L86 (6.2L)
This is the perfect cam for the hardcore street / strip enthusiast, and makes more torque and horsepower than our LT PD1 and LT PD2 cams. Very strong to 7000 RPM. Track tested, developed, and proven! Requires a 3000+ RPM Converter, and 0* phaser limiter.
L83 (5.3L)
This is the perfect cam for the hardcore street / strip enthusiast, and makes more torque and horsepower than our LT PD1 and LT PD2 cams. Very strong to 7000 RPM. Track tested, developed, and proven! Requires a 3000+ RPM Converter, and 0* phaser limiter.
Questions & Answers (6)
Customer questions & answers
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I know fuel economy is one of the last things people think about when building a truck but with 93 Octane at $5.44/Gallon its a consideration! What would the mpg difference be between PD1 & PD2? Thanks!
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Q I know fuel economy is one of the last things people think about when building a truck but with 9...... Read more answer nowAsked by on February 7, 2022 4:38 amA The PD1 would be slightly better but marginal at best
Hi there,
I would like to know if you sell any upgraded water pump for the zl1 lt4 2017? I would like to increase the water flow for cooling. If you have any suggestions or products for cooling the engine don’t forget to mention it, anything would be helpful.
Many Thanks,
Ahmed
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Q Hi there, I would like to know if you sell any upgraded water pump for the zl1 lt4 2017? I would...... Read more answer nowAsked by on July 12, 2021 1:07 amA There's no oem style upgraded water pump for this application, you'd have to run an external water pump such as a davies craig
Will it also work with the LT4 pump?
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A Yes sir, it will work
Will the GPI PD1 Cam work with the Lingenfelter Big Bore Fuel Pump?
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Q Will the GPI PD1 Cam work with the Lingenfelter Big Bore Fuel Pump? answer nowAsked by on February 21, 2021 5:16 pmA It will indeed work with that upgraded pump
can i get a quote for a cam kit, magnuson 2650 low side fuel pump and meth kit. and all the gaskets everything for a complete instal of everything for a 2017 ZL1
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Q can i get a quote for a cam kit, magnuson 2650 low side fuel pump and meth kit. and all the gaske...... Read more answer nowAsked by on September 23, 2020 9:34 amA You'll need to email in at [email protected] to have a quote built!
Can you get this Cam with a +38 or +42 fuel lobe?
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A No sir. Just the 32 percent
Gpi always on point!.. friendly and helpful on service and delivery
Great package!
Great Company to deal with. Their personnel is full of knowledge and got my products SUPER fast. Definitely will keep doing business with GWATNEY!!!