Chevrolet Performance LSA-Series Crate Engine And Trans Combo Install

Connect & Cruise in the Cadillac Helldorado

Chevrolet Performance Connect & Cruise-series engines are perfectly made for all lowriders, classics, or customs. We have seen this performance trend taking over hundreds of lowrider engine compartments the last decade. LS engines are the desire of many “low drivers” out there. Not just because of the horsepower, longevity, or reliability that these engines produce, but also because the engine swaps are as simple as the slogan that Chevrolet Performance themselves demonstrate: “Connect & Cruise.”

In this Lowrider Performance tech garage we show you how to drop in a supercharged LSA Cadillac engine into the lowrider “Helldorado” Cadillac. The Cadillac CTS V’s 6.2L LSA engine is a supercharged powerhouse that’s good for 556 horsepower. This Cadillac engine delivers with refinement that is rare in the world of high performance. It is smooth, quiet, and well balanced – all while delivering breathtaking power.

A unique aluminum cylinder block casting houses a forged-steel crankshaft and super-tough reciprocating parts. The LSA has integrated piston-cooling oil jets and high-flow cylinder heads that support the airflow enabled by a 1.9L, sixth-generation supercharger with four-lobe, high-twist rotors. The advanced rotor design broadens the supercharger’s effective range, enhancing low-rpm torque and high-rpm horsepower.

Chevrolet Performance’s LSA 6.2L supercharged crate engine package comes fully dressed, like this one here, from the top of the charge-cooled supercharger assembly to the ignition system, water pump, balancer, and more. From low to high rpms, the 4L85E four-speed overdrive transmission channels the LSA’s torque to the axle with exceptional strength and precision. It’s a “hellified” combo fit for the Helldorado! Now follow along as the crew at House of Pain installs this monster engine and trans combo to bring the hell into the Helldorado!

When we lifted the box and removed the plastic wrapping we were in awe over the difference in size comparisons to other LS engines as this LSA stands a whole lot taller than other engines because of the supercharger. No fear though as the engine compartment space on this 1968 Eldorado can handle mostly anything, but this “Connect & Cruise” package will take up all the space it wants so it can perform.

Luis out at the custom shop used Holley engine mounting brackets with Energy Suspension motor mount polyurethane pads to help raise, move forward, or adjust the engine back toward the rear of the car if needed.

The LSA engine was lifted and set into the engine compartment where it would be mounted.

Luis pushed through the mounting bolts to lock down the engine.

The beast is all in!

Next on the list of this monster combo install is the 4L85E transmission you see here.

The transmission was lifted into place and bolted up to the torque converter and engine. You can see there is no breathing room up there.

We had to make some adjustments after all. The 4L85E needed some room where the plug and play connections go so Luis had to cut through part of the lower tunnel floor. Note: Dave Engle of Engle Brothers Metal fabrication built a whole new floor and transmission tunnel because the ’68 Eldo was previously a front-wheel driver. We took a floorjack to separately install the transmission to the engine. We had to be careful setting the trans in place with a custom tunnel not really being built to allow room for a 4L85E trans.

We also had to reconfigure and modify the crossmember because our custom-built one was mocked up for the 700-R transmission which is almost 2 inches shy from the 4L85E transmission mounting point.

Our 4L85E transmission’s crossmember mount also has the Energy Suspension polyurethane pad for a quieter, vibration-free, and longer lasting duration than rubber application.

Luis goes ahead and mounts the Energy Suspension trans mount to the 4L85E transmission.

Then the center part of the crossmember is re-installed and adjusted to fit this monster combo. This concludes the first part of this LSA install. Please follow along in the next issue of Lowrider as we show you how simple a supercharged LS engine gets connected so we can cruise this Cadillac Eldorado.

Automatic Transmission Fluid Conditioner “Automatically prevents slipping, leaks, and wear”

Formulated with the finest base oils and a special Lucas additive package, Lucas Oil’s Automatic Transmission Fluid Conditioner is designed to prevent slipping, leaks, and wear to provide smooth, quiet operation, while conditioning seals to extend the life of the transmission.

Key Benefits:

Improves shifting

Reduces noise and shudder

Compatible with all ATF fluids, conventional, and synthetic

For use in new and older transmissions

Will not void new car warranty

Extends automatic transmission life