The next generation of winning Chevrolet
Performance Engines now an option
for 358 Modified Division

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In an ongoing mission to help keep racing affordable, Merrittville Speedway will allow the GM CT 525 Engine in competition in the Pinty’s 358 Modified Division beginning in 2015 as per rule 15.1.6 of the DIRTcar Rulebook with the following amendments:  

1. No repairs will be allowed – no exceptions
2. DIRTcar rules state the max RPM will be 7,500. Merrittville recommends 7,000 RPM.
3. Cars running this engine will weigh 2300 pounds
4. Weight may be added attempt to equalize competition  

“We’re moving forward with giving the Chevrolet Performance CT 525 Engine a place in the future of Modified Racing,” revealed (Merrittville GM) Erica Bicknell-Jones, “the affordable all-aluminum engine has proven itself to be reliable and successful on the race track in Late Model and Sprint Car groups and it is time to make it a part of our Saturday Nights.”  

The GM CT 525 is a lightweight powerhouse and is based on the LS Engine that is used in the Chevrolet Corvette, Chevrolet Camaro and the new Chevrolet SS production cars.  

Specific rules for the GM CT 525 Engine found in the 2015 DIRTcar Rule Book are as follows:  

15.1.6 Optional Chevrolet Performance CT 525 Engine
   A.) The General Motors (GM) Engine part number #197271821 CT525 will be permitted as an optional engine for use within the DIRTcar 358 Modified division. The engine will not be permitted in any sanctioned series event and/or for use at any DIRTcar sanctioned facility that does not permit the engine for competition.  

B.) It is the right of any DIRTcar sanctioned facility to apply these rules as an option for the Optional Chevrolet Performance CT 525 Engine for use in a division, which utilizes only the General Motors (GM) Engine part number #197271821 CT 525 in conjunction with the rules as stated within the rules and section 15.0-B DIRTcar 358 Modifieds.  

C.) The engine and all components must remain in their original configuration and form as purchased and/or delivered from the factory. Any alterations to the engine will not be permitted. The Engine must remain as manufactured by General Motors. Overbore(s) will not be permitted. Repairs may be permitted with written permission from DIRTcar and/or World Racing Group Officials.  

D.) All engines are to remain sealed from the factory. The original factory seals must remain unaltered, Tampering, removal, modifications of any type and/or broken factory seals will not be permitted. The GM Engine must remain unaltered in any way.  

E.) The GM Crate Engine seals (bolt-type) must remain unaltered. DIRTcar and/or World Racing Group Officials may require specific sealing and verification of all seals on any GM Crate Engine. Tampering with and/or alteration of any seals will not be permitted and is subject to immediate penalty and/or suspension.  

F.) Only GM replacement parts of any type will be permitted for any type of replacement and/or repair work. Only GM Crate Engine specific valve springs may be used for replacement and/or repair,  

G.) The maximum RPM of the GM CT 525 engine will be 7,500 as controlled by the Chevrolet Performance Parts ‘Crank Trigger Control’ as purchased from the manufacturer.  

H.) All other DIRTcar 358 Modified Engine rules apply, with the exception of the header rule(s).

The recommended exhaust headers will be the Schoenfeld 1124bls1-3 or the Beyea DM-525.  

The GM CT 525 Engine is available at any GM Performance Parts Dealer. For more information visit  

Merrittville Speedway’s Winter Office located in Bicknell Racing Products, 117 Cushman Road in St. Catharines Ontario. For all the news on Merrittville Speedway’s 64th Consecutive Season in 2015 – visit

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MERRITTVILLE SPEEDWAY SPONSORS The 2015 64th Anniversary Lucas Oil Weekly Racing Series for Merrittville Speedway’s 5 Divisions is brought to race fans and racers by division sponsors – Pinty’s Delicious Foods, Rick’s Delivery, Rev’s Full Throttle Powersports, Hoosier Tire Canada and Van Raine Construction and Contingency Partners  in addition to many marketing partners. Visit them at and visit them when you require their products and/or services. Lucas Oil Products is one of the fastest growing additive lines in the consumer automotive industry featuring a premium line of oils, greases and problem-solving additives. Through innovative product research and development, along with aggressive marketing programs, Lucas Oil Products has established itself as the top selling additive in the industry. Race fans can look for Lucas Oil Products at their favourite automotive retailer or maintenance center including KC Auto Parts, RCM Racing Equipment and Tim Phillips Garage.      


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