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In-Store Pickup Location

Summit Racing® LS Series Valvetrain Upgrade Kits SME-K-14300

Valvetrain Upgrade, Chevy, 4.8, 5.3, 5.7, 6.0L, Kit

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  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight and oversize fees. Valid on orders shipped in the contiguous United States.

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Brand: Summit Racing

Manufacturer's Part Number: SME-K-14300

Part Type: Valvetrain Upgrade Kits

Product Line: Summit Racing® LS Series Valvetrain Upgrade Kits

Summit Racing Part Number: SME-K-14300

Valve Springs Included: Yes

Number of Springs Per Valve: Single

Valve Spring Style: Beehive

Outside Diameter of Outer Spring (in): 1.290 in.

Retainers Included: No

Pushrods Included: No

Locks Included: Yes

Quantity: Sold as a kit.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

Summit Racing® LS Series valvetrain upgrade kits are super-sized combos to beef up your valvetrain! These valvetrain combos match Trick Flow® Track Max® Pacaloy beehive valve springs with Summit® upgraded rocker arm bearings and pivots, spring locks, and an integral shim/seal kit. Plus, for the easier installation of your rocker arm bearings, we include our vise fixture! Prep your LS for extra power with Summit Racing® LS Series valvetrain upgrade kits.

Warranty

Questions & Answers Ask a Product Question
Q:

What lift are the vale springs good to.

Asked by CHARLENE on February 15, 2017

A:

.600 lift

JEFFERY B from WV answered on June 02, 2019

+See All Answers (2) Answer This Question

Q:

What is the official max lift for these springs that Chevrolet performance says?

Asked by THOMAS on January 19, 2019

A:

Thank you for your question. The Summit K-14300 valvetrain kit includes springs rated up to 0.600 lift by PAC, who makes the springs, in LS vehicles.

Summit RacingSummit Racing Answer - January 21, 2019

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Q:

Will my stock retainers work with this kit? Thanks in advance.

Asked by DAVID on May 15, 2018

A:

Thank you for your question. The Summit K-14300 LS Series Valvetrain Upgrade Kits will work with your stock retainers.

Summit RacingSummit Racing Answer - May 15, 2018

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Q:

Will this upgrade kit work for a 2012 silverado 5.3 ltr. I believe either a LC9 or LH9

Asked by AJ on July 30, 2017

A:

Thank you for your question. The Summit K-14300 LS Series Valvetrain Upgrade Kit is designed to fit all Gen III/IV LS engines and will fit your 2012 Chevy Silverado with a 5.3L LS engine.

Summit RacingSummit Racing Answer - April 17, 2018

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Most Helpful Reviews Review This Product

7 Customer Reviews for Summit Racing SME-K-14300 - Summit Racing® LS Series Valvetrain Upgrade Kits

Average Customer Review

5 Star

(5)

4 Star

(2)

3 Star

(0)

2 Star

(0)

1 Star

(0)

+See All 7 Reviews

Great Kit

Summit RacingSummit Racing Verified Purchase

SME-K-14300
I bought the kit for my LS2 that is a 500HP daily driver. The press/tool was very easy to use, did all the rockers in about an Hour with them off the engine. Glad to have the kit so I can do this upgrade more often and for customer's vehicle. I would recommend a nice big bench vice for using this tool.

1 of 1 found this review helpful.

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Reviewer: from NY

Date: March 21, 2016

Appearance
Ease of Installation
Price/Value
Quality

good product

Summit RacingSummit Racing Verified Purchase

SME-K-14300
Springs are said to be good up to a 625 lift. Great little kit. Only thing missing is the retainers. Vise makes the bearing swap super easy. Buying parts seperatly and getting the kit is actually a a little cheaper buying separate. But you d Won't have the vise. But it is doable without it. Just makes it easier

1 of 1 found this review helpful.

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Reviewer: from GA

Date: April 15, 2015

Appearance
Ease of Installation
Price/Value
Quality

Great Kit

Summit RacingSummit Racing Verified Purchase

SME-K-14300
I used this kit on a supercharged 4.8 with 150k miles that was giving me valve float at high rpm. I picked up another 20 rwhp once installed. And the trunion upgrade is a great way to keep from having the stock bearings wreck your motor.

1 of 1 found this review helpful.

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Reviewer: from TX

Date: December 10, 2014

Appearance
Ease of Installation
Price/Value
Quality

Great kit. Complete and well thought out.

Summit RacingSummit Racing Verified Purchase

SME-K-14300
The fixtures included make the rocker rebuilding process a simple process. Everything fit and worked as intended. A great way to ensure that your engine will withstand the use/abuse you intend to throw at it. Great value.

1 of 1 found this review helpful.

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Reviewer: from OR

Date: November 30, 2014

Appearance
Ease of Installation
Price/Value
Quality

Great little kit

Summit RacingSummit Racing Verified Purchase

SME-K-14300
Nice to land it all in one just need gasket kit added it would be perfect

0 of 0 found this review helpful.

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Reviewer: from MO

Date: August 10, 2017

Appearance
Ease of Installation
Price/Value
Quality

Some parts are not legal for use in California or other states with similar laws / regulations

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