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GPI – Complete 4.070″ Bore Gen 5 LT1 / L86 Piston / Connecting Rod Package (2014+ Corvette / 2016+ Camaro SS)
From: $1,881.80
This kit includes:
- (8x) Diamond Pistons with 2618 Forging Material in Standard Compression Ratio
- (8x) 6.125 Connecting Rods
- (8x) Heavy Duty Pin, Locks, Ring Package, and Rod Bearings
- Designed to Support 1000+HP Applications
Total Seal Recommend Gap Chart
Frequently Purchased Together
$1,076.40
Connecting Rods
$805.40
$131.89
Description
Bulletproofing the LT for Boost
The LT series GM engines are incredible powerplants as designed – however unlike their predecessor (LSx) – the LT’s commonly rebel when power adders such as superchargers, turbos, and nitrous are added.
unlike the LS – the LT’s commonly rebel when power adders such as superchargers, turbos, and nitrous are added.
The LT powerplants have several weak links when boosted:
- the unique piston and ring land design which was intended for naturally aspirated duty is subject to failure under even minimal detonation.
- preignition has been associated with various detergents found in certain motor oils which become emulsified resultant of the fuel being sprayed under pressure into the cylinder creating unintended combustion
- We have found ring end gaps as small as .008 which will certainly butt together causing cylinder, piston and ring failures when subjected to increased heat and cylinder pressure.
- We have found LTI connecting rods during engine upgrades on stock forced induction engines which were slightly bent even though they were still asymptomatic.
Overcoming Limitations
Understanding these limitations – and because GPI strives to provide the best combination of power and reliability for our clients – we have worked with Diamond Racing and Callies to offer a standard compression, 4.070″ bore solution for the Gen V 6.2 liter LT1/L86 engines.
The Solution
Gwatney Performance is proud to present a Complete 4.070″ Bore Piston and Rod solution for the Gen V LT1 (6.2) Engine! This package is designed specifically for boosted 14+ Corvette’s and 16+ Camaro SS.
Modeled after our Standard Compression 4.065″ Bore Drop-in Piston, we were able to enlarge the piston by .005″ for those who have had their bore size increased to 4.070″. The result is an extremely robust piston and rod package.
This kit is designed to support 1000+HP applications and is the perfect match for your forced induction LT!!
Results?
Reliable and consistent high horsepower Gen 5 LT’s! Here is a recent build with these pistons. This is a street car, so power and boost levels are fairly conservative.
This car is fitted w/ the full assortment of GPI Gen5 LT goodies including:
- GPI LT Drop In Pistons & Rods
- GPI LT Cylinder Heads
- GPI LT Camshaft (SS1)
- G1Pro Sheet Metal Intake Manifold w/ GPI Port Fuel Injection System
Questions?
Give us a call at (501) 985-4947 or email [email protected]
To apply for a dealer wholesale account – visit our GPI Dealer Application Page.
Questions & Answers (4)
Customer questions & answers
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I have a 2018 C7 Stingray with LT headers and A&A Supercharger kit currently. I would like help determining the different kit components you would recommend for my setup. I will be building this on a second LT1 block and second set of heads outside the car that I purchased at a great price (low mileage donor car). I’m wanting to use your rod and piston kit and I’m thinking I should do the 4.070 bore since the block needs some machine work?? Is this correct? Also need recommendation as far as the standard compression or lowered compression option. Callie’s Compstar Rods with your standard rod bearings. Plan is to complete the block build while adding LT4 fuel pump and injectors. Then rebuild the heads using the parts in your SS2 cam package. Can you provide recommendations on the parts I should select in that package also please. I would then send my heads in to have you do your porting job on them as well as build them. Thanks for any help and advice.
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Q I have a 2018 C7 Stingray with LT headers and A&A Supercharger kit currently. I would like he...... Read more answer nowAsked by on April 17, 2023 4:37 amA I would use the 4.070 to verify you have a good true cylinder wall and standard compression. For more in depth build talk please email us at [email protected]
I have a stock 2016 C7 Z51 M7 Stingray that I would like to do some work on but not sure where to start. I’m thinking heads and cam and any supporting mods but need direction on really what I can do. Phone number is (205) 966-3485 Thank you in advance Ray Lemonds
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Q I have a stock 2016 C7 Z51 M7 Stingray that I would like to do some work on but not sure where to...... Read more answer nowAsked by on March 1, 2022 6:33 pmA Email us at [email protected]
2020 camaro 2ss A10 rotofab intake e85 and full exhaust. Looking for a package to make 600-700 hp
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Q 2020 camaro 2ss A10 rotofab intake e85 and full exhaust. Looking for a package to make 600-700 hp answer nowAsked by on March 14, 2021 3:13 pmA This package will be the foundation that will allow you to do just that, and well beyond. Feel free to email into our support team for pricing and build options to meet your goals!
I have a 2017 Camero SS Atomic MSD intake, rotofab cold air intake, BBK LONG Tube headers and e-85 and a 6 speed transmission. Can you send me a head and cam package my car is a daily driver.
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Q I have a 2017 Camero SS Atomic MSD intake, rotofab cold air intake, BBK LONG Tube headers and e-8...... Read more answer nowAsked by on October 8, 2020 11:11 amA Sure, send me your email and ill send a parts list
Was a bit bummed out about the rod bearing being out of stock but my pistons looked to good in person to be upset.
Arrived on time