RHS LS7 502ci 800hp Complete Engine Upgrades

Our 502ci RHS Engine is as big as it gets in the LS Engine world, making a whopping 800hp and close to 700 ft lbs of torque NA. It does require a really good flowing intake such as the Holley Hi Ram or the Performance Design TR in order to break the 800hp mark. We can build this engine to fit into any GM car that came with a LS based engine from the factory or set it up as a turn key package for a hot rod. Using good performance long tube header that has 2” primary tubes and a 3.5” collector is recommend. This engine works best with a 3500 rpm stall or any manual transmission and a 3.73 gear or lower, you can check out our offerings from RPM Transmission below.

Intake Upgrades

Here are the most popular intakes that we use along with their power gains listed

Fast LSxR

+ 10-15hp

Holley Hi Ram Inatake Black

+ 20hp

Holley Sniper Sheet Metal Silver

+ 10-15hp

Holley Sniper Sheet Metal Black

+ 10-15hp

Throttle Body Upgrades

We offer both cable and electronic drive by wire throttle bodies in polished and black finishes

Nick Williams 102mm DBW Black

Nick Williams 102mm DBW Silver.

Holley 92mm Throttle Body Black

Holley 92mm Throttle Body Silver

Valve Cover Upgrades

This engine comes standard with factory GM valve covers and below is a list of the most popular valve covers that we offer as upgrades, if you do not see what you want just ask and we can get it for you.

Callies Billet Valve Covers

Holley Chevy Valve Covers Black

Holley LSx Valve Cover Orange

Holley Valve Cover Black

Holley Valve Cover Polished

Front Runner Kits

If you are Retro Fitting an LS Engine into a Hot Rod we offer the following options for Front Runner Kits.

Eddie Motorsports
LS Front Drive Kit Black

Eddie Motorsports
LS Front Drive Kit Polished

Holley
LS Front Drive Kit

EFI System Options

We offer Holley EFI Systems which are self learning and self tuning. These systems are super easy to install and we offer full tech support to help you get it tuned and running perfect.

Holley Dominator EFI

Can run electronic DBW throttle bodies and electronic auto transmissions

Holley HP EFI

This is for cable driven throttle bodies only

Ignition System Options

GM LS7 D514A Coil Kits
We use the GM LS3/LS7 coils for they look the best and work great with all power levels up to 850hp.

Header Options

With options from both Kooks and American racing headers we have what you need for both factory GM cars that came with LS engines as well as Hot Rod Swap kits.

American Racing Headers

Kooks Headers

Motor Mount Options

Holley Swap Motor Mounts
Normally you will want to match the motor mount to the set of headers that you purchase, we can help ensure that you get the correct parts the first time to make your install go smooth.

Transmission Options

We only recommend RPM Transmission for they build super strong auto and manual transmissions and back them up. We can help set up the correct transmission package to match your engine.

RPM Transmission 4L60E and RPM Transmission 4L80E

GM T-56 Manual Transmission

Transmission Accessories

Here are a list of transmission accessories help you complete your install, we recommend the use of ARP flywheel bolts.

From a C6 Corvette to a 1st Gen Camaro