Engines

Please read through our changes in designations for our engines. We have restructured our engine platform based on the varying levels that we now offer. Because I give out very few specs on my engines, I’ve tried to make it easier to decide what product you need to succeed. All engines are fired, tested, timed and tuned in our shop before delivery.

Stage I

Non roller, used rotating assembly, torn down to rotating assembly and full inspected and approved by me. Formerly our EL series engine. Very dependable, very high win record. Great engine for the novice derby driver who wants to eliminate the engine being a issue for reliability. Other than the rotating assembly, all other parts are new/rebuilt. Comes with our famous carb and distributor combo. Usually these engines will be in the $1900-$1995 range.

Stage II

Same as Stage I, only with with full hydraulic roller valvetrain. Usually in the $2600 range.

Stage III

Complete rebuild. Block is bored/honed as needed, crank polished, new pistons/rings, etc. Considered a fresh engine, with carb and distributor, but has no roller equipment, usually in the $2400-$2600 range.

Stage IV

Same as Stage III, only with full hydraulic roller valvetrain. These engines are generally in the $3000 price range.

Grunt Series

If you want to throw caution to the wind and make brute power, we can do that as well. Please understand that there are no free lunches in this world, and if you go this route, you simply will not get the reliability or endurance of the Signature Series engines. We can still use our tips to make it run better/longer/cooler than the same engine built by someone other than us, but it will not outlast the Signature Series. Sounds great and breaks things - and if that is what you are looking for - this may be the engine for you.

Signature Series Engines

When you hear about the hundreds of wins we have, most come from our Signature Series Engines. They are a great combination of parts that are proven to work together to get you into the Winner’s Circle, and not put you in the poor house. Easy to maintain, easy to operate on the track. They start right up, and rarely die - even under the worst circumstances. My Signature Series engines are based on years of research and development, and continue to be the foundation for any serious derby driver. These engines have won most all of the large shows in the U.S. They have wins from coast to coast, and from Texas to Canada.

355 Signature Series

Same specs as the 355 SSE Roller listed below, but without the roller valvetrain. $2800 base price.

355 Roller Signature Series

this is the engine combination that may have more wins than any other setup in derby history. This platform has won the big derbies time and time again. Excellent throttle response, great durability, little maintenance needed. $3600 base price. The most popular selling engine in our shop. Hydraulic roller valvetrain. Camshaft design is upgraded as research dictates, subject to change without notice.

Ice Cube Signature Series

This is the ultimate derby engine, except for our Black Magic or Super Cube Engines. It is the coolest running gas-powered engine we have ever built or used. I disclose no specs about this engine other than the fact that it is full roller and balanced. Awesome power and response, and is legendary when it comes to insanely cool running temperatures, as well as ability to run without water and sometimes low on oil (though never recommended). Very economical on fuel also, so if you are looking at it for a big show that will last for hours, this engine gets the job done. Winner of Metal Mayhem, among many other large show wins. $4600.

Black Magic Engines

These are the latest in Research and Design. They use parts and designs never before offered by G.A.S., at least to the public. YOU MUST BE AN EXISTING GROPP AUTOMOTIVE SPECIALTIES ENGINE CUSTOMER TO INQUIRE ABOUT THESE ENGINES. They will ONLY be sold to people I know and trust, so if you have screwed me in the past by tearing down one of my engines to try and copy it, don’t bother calling.