Rolls Engine Conversion
1989 ROLLS ROYCE SPUR w/GM 350" RAM-JET EFI V8 350HP

Rolls Royce or Bentley
Cloud, Shadow, Spur & Limousines etc.
Engine Conversions Engineered to fit right the first time, we pay attention to details.
We are now doing EFI Conversions on your Rolls Royce/Bentley V8's and soon iL6 Engines.

This is a less expensive option to a conversion making your current engine more reliable.

Owning a Rolls or Bentley generally means you want to stand out in a crowd, that's great. our job is to make sure you can get there and back reliably, every time with out spending your kid's inheritance. our work is hidden under the bonnet, so when you pull up to Sardi's, park on Rodeo Drive, or just go to the home town bistro no one will know what kind of power got you there and home, we even try and make your vehicle sound the same.

350HP Shadow 260HP Shadow Cloud w/Rolls Air Filter

350hp GM EFI RR TH-400 GM 350 EFI

GM LS3 EFI LS3 in RR Spur LS3 67 Corniche

1981-1996 Custom EFI Rolls V8 1933 Packard
Click on pictures for full view of some of our work, both with EFI. (NEW) We are now installing the new LS3 430HP V8 that will pass the latest emission standards in all 50 States including California and many other Countries. (All Rolls Royce or Bentley badges are customer installed).

We do Engine conversions for Rolls Royce & Bentley in our shop.
We also have the required Brake modification & rear suspension fix.

The BIG question why put a GM Engine in your Rolls or Bentley?
It deserves a Heart Transplant just like we might!
Cleveland is #1 for heart & Rolls/Bentley transplants.
Save a Rolls or Bentley from the salvage yard, give it new life.

	Bring your vehicle into the 2000 era with new reliable life.
	Don't let your Rolls/Bentley end up in a salvage yard, give it new life.
	Your investment in a new GM V8 will be returned as the car go's up in value un-like a new car that will go down in value to a tax donation in the coming years.
	Our conversions are Engineered to fit your Vehicle not a cut & weld job.
	Our Conversions are a must for Limousine Services, Low cost reliability.
	Easy to get parts most any place in the world faster for less money.
	You get a New Engine rather than a re-built with a lot of old parts.
	Service can be done at most any garage faster for far less money.
	The GM EFI Engine pictured has 350 hp & 400# torque.
	The Hi-Performance 350 hp will have a mild performance idle but cruse smooth.
	The New MEFI-4 GM Computer with closed loop system with improved idle.
	The New MEFI-4 Computer is ideally suited for street vehicles with improved drivability.
	We also have a smoother 260 hp Cadillac/GM 350" V8 w/4B Carb for less $.
	New Delco 134 type AC Compressor (if you have AC).
	New Saginaw Power Steering pump (if you have Power Steering).
	New Hi-Torque gear driven Starters.
	Delco 105 or (140 LS3) amp alternator.
	The Starter we use sounds more like a Rolls when starting than a GM Engine.
	We use a spring loaded serpentine fan belt for maintenance free reliability.
	All GM TH-400 Automatics are not the same, please check the pictures below.
	Do you want your Rolls Automatic to feel like a Chevrolet or a Rolls Royce?
	This is the inside of a Chevrolet TH-400 Automatic Check the pump passage's at the bottom of the pictures. This is part of the reason we selected the Rolls Automatic over the standard Chevrolet TH-400 Automatic.
	This is the inside of a Rolls Royce TH-400 Automatic View the added pump oil passages at the lower portion. This will make a difference in the shifting & performance of a Hi quality TH-400 and a standard TH-400.
	(NEW): We now have the adapter to install the new LS3 V8 engines to the S2 & S3's 2 clutch GM HydroMatic 4 speed Automatic.
	(NEW): We now have the adapter to install the new LS3 V8 engines to the Shadow 3 clutch RR HydroMatic 4 speed Automatic.
	(NEW): We now have the adapter to install the new LS3 V8 engines to the 1966> GM TurboHydro 400 3 speed Automatic.

Why have us do the conversion.

	We have several years of R&D engineering, tooling & castings to do the job right.
	Our Conversions are designed to fit correctly, not cut & weld to fit.
	We have designed our GM V8 conversions to be a direct bolt in replacement.
	We DO NOT cut into the frame or sub-frame at all with our 350" or LS3" V8 conversions.
	We DO NOT weld mounts or brackets to your frame reducing the re-sale value.
	We DO NOT drill holes in your air tight frame or sub-frame reducing the re-sale value.
	Your frame is an air tight sealed assembly to keep moisture out to prevent rusting from the inside out since the inside is not painted.
	We mount the GM Engine to the same mounts that the Rolls Engine was mounted to with the stock Rolls mounts.
	By using Rolls 3 point mounting system we minimize engine noise & vibration retaining Rolls technology.
	If you ever wish to re-install the Rolls Engine it will just go right back in where it came out and no one will ever know it had left.
	We have a special 350 V8 oil pump so we can clear the rear sub-frame, (Shadow & >).
	We have a center sump 350 & LS3 V8 oil pan to clear the sub-frame & steering, (Shadow & >).
	We make an adapter to go between the GM Engine and the Rolls TH-400 Transmission the way Rolls installed the Engine originally.
	This also retains the original Rolls/Bentley automatic performance & shift quality.
	Cloud with 350" V8 gets a New late model Rolls TH400 case with correct components for your application.
	Cloud with the LS1 or LS3 V8 retains the Rolls Hydramatic 4 speed Automatic and Brake system.
	With the NEW LS3 V8's we can now connect to all of the Rolls/Bentley Automatics for better compatibility.
	This retains the Rolls rear Engine mount & torque control system.
	We make an elaborate front Engine mount to go to the Rolls front Engine mounting pad.
	We have a Cloud & P-5 Brake conversion that really works great for the 350" V8 conversions.
	Our Cloud Brake conversion is done without modifying the drum-brakes.
	We have developed an Electro-Hydraulic pump system for the rear suspension to retain the ride control system you now enjoy. We have systems for both DOT-3,(Yellow) & Mineral Oil, Green) systems on Shadow & > vehicles.
	We do the (Shadow & newer) conversions with out removing the hood or changing the inside of the vehicle.
	We are currently working on a conversion for the 1935 Rolls 20/25 or 25/30 retaining the Rolls 4 speed manual transmission
	The Rolls 20/25 or 25/30 will get the GM 3.7L EFI 5 cylinder engine for a nice easy to service fit and a lot more power. (Stay tuned for more info)
	The NEW LS3 430HP V8 Conversion makes the best transplant we have done to date. We will be doing other LS# Engines as well.

If you are looking to have some one close to home do your conversion here are some questions you should ask before turning your expensive Rolls or Bentley over to them.

	Will the conversion be a well engineered instillation or a make do conversion?
	Only professionally engineered conversions will play a BIG part in the value of your vehicle.
	Will they cut into your sub-frame to clear the oil pump & pan? (Shadow & >)
	Will they weld mounts to your frame or sub-frame?
	Un-sealed frame or sub-frame will allow water to enter & rust from the inside out.
	Will they swap your Rolls Transmission for a Chevrolet unit & keep your Rolls Transmission?
	Will they install a rear Transmission mount to the unibody of your car so the noise & vibration can come into the vehicle?
	Will they swap your Rolls radiator for a replacement unit & keep your expensive Rolls radiator?
	Will they cobble in a Car or Truck brake system and try to make it work?

If the answer to those questions is YES then it would be worth it to let us ship your Rolls Royce or Bentley to Ohio for a professional conversion.
When the conversion is complete you can fly in to Cleveland air port and drive your all-most New vehicle back home with the confidence that the job was done correctly.
We do conversions from all over the USA and from as far away as Australia so I am sure we can do your conversion no matter where in the world you live.
We have been doing conversions of all kinds of since 1954.
For years now we specialize in Rolls & Bentley conversions!

NOTE:
This is an elaborate EFI conversion,we also do simple EFI conversions
We are working on EFI Conversions for your current Rolls/Bentley V8 Engine.
This conversion will be for Carbureted or Mechanical Fuel Injected V8's
This will make reliability & service a lot better with out replacing your V8.
More on this conversion as things progress.
Our 1st conversion is being installed on a 1989 Rolls V8 installed in a 1933 Packard.
Stop back to see how we are progressing, we will post a page on the Packard soon.

We can also do special custom conversions like an all aluminum Supercharged Cadillac LSA 556hp or Corvette LS9 638hp GM V8 and other Muscle Car selections if you want your Rolls to perform with the hot cars of today. Just remember Speed cost money, how fast do you want to go?
Please give Chuck a call and tell him what you would like.

Information Request Form

Select the items that apply, and then let us know how to contact you.

Have Chuck contact me or give him a call @ (440)-234-6810

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04/14/2013 Hit Counter

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Rolls Royce or Bentley Cloud, Shadow, Spur & Limousines etc. Engine Conversions Engineered to fit right the first time, we pay attention to details. We are now doing EFI Conversions on your Rolls Royce/Bentley V8's and soon iL6 Engines.

This is a less expensive option to a conversion making your current engine more reliable.

Information Request Form

Send mail to Just ask Chuck with questions or comments about this web site. Last modified: August 13, 2016

Rolls Royce or Bentley
Cloud, Shadow, Spur & Limousines etc.
Engine Conversions Engineered to fit right the first time, we pay attention to details.
We are now doing EFI Conversions on your Rolls Royce/Bentley V8's and soon iL6 Engines.

Send mail to Just ask Chuck with questions or comments about this web site.

Last modified: August 13, 2016