” I won the Iron Man race at Penwell Knights Raceway September 6, 2025 with your Reher-Morrison 598. 225 passes on this engine and still performing flawlessly. Thanks guys! ” ~ Mark Dunn
Author Archives: RM@dmin
Congrats to Jim Prevo! Nat’l Dragster August Sportsman Racer of the Month with his RM 555 ProCharger
Congratulations David Steward!
More Reher-Morrison Power for the Win!
RM 427 Small Block Power!
Congratulations to David Steward on his Ozark Mountain Super Shifters Season Championship Win!
Congratulations Jim Prevo!
Congratulations to Jim Prevo on his Top Dragster Win with his Reher-Morrison 555 ProCharger Engine!!
“Good day at the races! Thanks for all of the hard work!” ~ Jim Prevo 
@ Brainerd International Raceway
Congrats to David Steward!
Congrats to David Steward on his win with his Reher-Morrison 427 engine!!
Happy Customer!
Thank you Cliff Loveless for reaching out. We are thrilled that you are happy with your 427 Small Block RM engine!
From Cliff:
“My rebuilt 427 small block was absolutely incredible! It ran 5.88 11 runs in a row with changing weather and wind. I dialed a 5.89 to break out .001 at 4 cars. Thanks for your all of your help!”
Congratulations Chris Dodd!
Congratulations to Chris Dodd on his WIN
with his Reher-Morrison 615 20º engine! 
Congratulations Tom Dauber!
Congrats to Tom Dauber for his Runner-Up win with his Reher-Morrison 583 20º engine!
Congratulations Tom Dauber!!
Congratulations to Tom Dauber for his win at Numida Dragway with his Reher-Morrison 20º 583 engine!
Congratulations Dave & Jeff Pierce!
Congratulations to Dave & Jeff Pierce and Ron Muenks on their win at Midwest ProMods in Ennis,Tx! Running a Reher-Morrison 959ci engine!
Great job guys!
Congratulations Bryce Hatfield!
Congratulations to Bryce for his Runner Up finish in No Box running his Reher-Morrison powered 427 engine!
Congratulations JJ Gossett!
Congratulations to JJ for her Foot Brake win at Big Country Raceway in her 522 Reher-Morrison engine!
Congratulations Colton Wheeler!
Congratulations Colton on your Super Pro win at Big Country Raceway! Driving for the first time in a Reher-Morrison powered 583 20º Dragster!
Congratulations Linzi Theobald Meserve!!
Congratulations to Linzi Theobald Meserve for her 2nd Wally win in two weeks with her RMRE 632 engine!
Congratulations to Christopher Dodd!
Congratulations to Christopher Dodd for winning the AAA Midwest Nationals in St.Louis, again, with his Reher-Morrison 615 Super Series Engine!
Theobald Family does it again!
Sorry for this late news, it’s been a busy week! Last weekend at the D6 closer in Woodburn OR, Parker Theobald won in SuperPro in his Reher-Morrison 583 powered Mullis dragster and Linzi (Theobald) Meserve Runnered-up in her Reher-Morrison 632 powered Racetech Top Dragster.
Both cars in the finals! Woohoo!
Theobald Family! – Several Reher-Morrison Engines
July 14th Tanner Theobald wins Top Dragster at the NHRA D6 race at Woodburn Dragstrip,OR with his Reher-Morrison 583 Powered Trick Dragster.
July 19th Tanner Theobald goes to the semi-final in Top Dragster at the NHRA D7 race at Sonoma Raceway, CA with his sisters Reher-Morrison 632 Powered Race Tech Dragster.
July 28th Linzi Theobald Meserve runners-up in Super Gas to Bo Butner at the NHRA Sonoma Nationals race at Sonoma Raceway, CA in her Reher-Morrison 583 Powered ’68 Barracuda
August 10th Parker Theobald wins the Super-Pro 10K NightFire race in Boise, ID in his Reher Morrison 583 Powered Mullis Dragster, then runners-up the next day at the 5K. Also named to “Drag Champ” top ten list for the week
Rich Smith – 762 Nitrous Engine
Runner up with the new bullet, runs 4 teens like a walk in the park. Big thanks to you and everyone at Reher!
Rich Smith
Brent Bockover – 632 All Aluminum BBC
Thank you Mark and Reher-Morrison!! We had a two day race weekend and glory be to God thanks to your efforts and contribution building my 632, I was able to win both days! –Brent Bockover
Jim Prevo – 632 Super Series Engine
Congratulations to Jim Prevo, Route 66 Top Dragster Champion, with his RMRE 632 Super Series Engine!
Tech Talk #100 – The End of the Road
By David Reher, Reher-Morrison Racing Engines
“My goal was to encourage readers to think seriously about the topics I wrote about.”
One hundred is just a number – one more than 99, one less than 101. Yet racers see significance in certain numerals, from Eddie Hill’s “First in the Fours” to Lee Shepherd recording the first
Tech Talk #99 – More About Oil: A Slippery Subject
By David Reher, Reher-Morrison Racing Engines
“Controlling the supply of oil in the shutdown area should be a top priority.”
More drag racing engines are damaged in the shutdown area than during a race. This is a bold statement, but
Tech Talk #98 – Oil Is Everything
By David Reher, Reher-Morrison Racing Engines
“It’s better to allow a little trash to circulate inside the engine than to risk a catastrophic failure due to insufficient oil flow.”
Oil is the lifeblood of a racing engine. I know this isn’t breaking news for most racers, but that doesn’t diminish oil’s importance. The majority of catastrophic engine failures are caused by lack of lubrication.
Wayne Horton – 665ci All Aluminum BBC
These are a couple of bad ass hot rods! Both are powered by Reher Morrison 665 All Aluminum engines. Wayne Horton GTO 693 @ 197, Erice Cabral Camaro 705 @ 194. Sponsored and owned by Dick Clark.
Congrats guys on your winner and runner up!
Tech Talk #97 – The Pump Gas Project
By David Reher, Reher-Morrison Racing Engines
“A powerful engine that runs reliably on pump gas has a lot of appeal for performance enthusiasts.”
The sign on the door reads “Reher-Morrison Racing Engines,” but in fact a surprising number of engines we build end up on the street.
Brian Reklaitis – 12º 583ci BBC
Hello! I wanted to share a picture with you of my first win of the year with my new Reher-Morrison 583 Big Block engine. I won this engine at the 2015 Sunnen Engine Charity Sweepstakes. Engine runs great! 7.04 @ 190 first pass off the trailer in 3000′ DA. There is definitely a 6.9 in there!
Thank you!!
Brian Reklaitis
Pittson, Pennsylvania
Tech Talk #96 – Compression Lesson
By David Reher, Reher-Morrison Racing Engines
“Excessive valve clearance is the enemy of compression – and compression is your best friend in a naturally aspirated racing engine.”
One of the most common mistakes I see in engine building is excessive valve clearance. One of the rules at our shop is that we always check the valve clearance in any engine that we didn’t build before it’s torn down.
Tech Talk #95 – Analyzing the LS Engine
By David Reher, Reher-Morrison Racing Engines
“As a professional engine builder, I’m not concerned about the brand on a block.”
Growing up among gearheads, we all knew guys who swore lifetime allegiance to a brand. It was a snap to identify the Chevy guys, the Ford guys, and the Chrysler guys.
Tech Talk #94 – Are You Connected?
By David Reher, Reher-Morrison Racing Engines
“The connections that were formed 30 or 40 years ago still play a role in my daily life as a professional engine builder.”
The state of the art in engine building is a moving target. A set of cylinder heads that is on the cutting edge this year can become outdated parts by the next season.
Tech Talk #93 – All About Connecting Rods
By David Reher, Reher-Morrison Racing Engines
“I can’t say categorically whether steel or aluminum connecting rods will make an engine perform better.”
Back in the early ’70s, when Buddy Morrison and I were building engines in the back room of Mansfield Auto Supply, choosing connecting rods was simple.
Mike Greene – 12º Raptor 598ci BBC
-Top Dragster-
Another first-time winner got the job done in Dart Machinery Top Dragster at Thunder Road, as Mike Greene of Burleson, TX., survived from the number 11 qualifying spot to beat number 12 starter Derrik Sholar in the final.
Greene qualified his Reher-Morrison 598 BBC powered ’08 Undercover dragster with a 4.13 pass at 171.31 mph and dialed in at 4.13 for three of his four elimination rounds. He ran 4.18 against the .13 in his first round win over Louisiana’s own Michael Kile, then went 4.14 on the 4.13 dial in to beat Jeb Adams, who broke out by a hundredth in round two. In the semis, Greene dialed in at 4.12 and ran another 4.14, but courtesy of an excellent .006 reaction time after Cody Moore ran dead on his 4.18 dial.
That left only the final, where a 4.16 against his 4.13 dial in got the job done for Greene as Sholar also broke out by a hundredth under his 4.22 dial in.
-Mike Greene-
“My 12º Raptor headed Reher-Morrison engine is the best, most consistent fast engine I’ve ever owned. I can run this car down the track like a bracket car and even drive it to the lanes and back to my trailer after a run. I can’t thank the guys at the shop for everything they do.
Thanks.”
Mike Greene
Burleson, TX.
Kyle Rickman – 632ci All Aluminum
632ci All Aluminum
Single 4bbl Carburetor
Dry Sump Oiling System
4 Link Dragster
8.90 @ 189.00 SuperComp Trim
Kyle Rickman
Combine, TX.
Tech Talk #92 – The Detonation Investigation
By David Reher, Reher-Morrison Racing Engines
“The burning fuel-air mixture becomes an acetylene torch that can melt pistons, cylinder heads, and blocks.”
In the days before electronic controls, it was common to hear the sound of detonation in a street engine during hard acceleration – a distinctive knocking or metallic ringing sound.
Tech Talk #91 – Drag Racing in the Digital Age: Laptops and Air Pumps
By David Reher, Reher-Morrison Racing Engines
“Behind every successful New Age engine is someone with a laptop computer.”
I didn’t actually start drag racing during the age of the dinosaurs, but sometimes it feels like I did.
Chris Eidson Division IV Bracket Finals Championship!
Congratulations to Chris Eidson on his Division IV Bracket Finals Championship! Chris won the Pro category and then went on to win the run off between Pro and Super Pro winner for the trip to Pomona and the bracket racing World Finals!
Chris utilizes a Reher-Morrison 565ci in his ’63 Corvette roadster. To win a bracket race championship it takes a good car, a good driver, and a dependable engine that can go 8 to 10 rounds, one after another. That’s what Chris got in his 565 Reher-Morrison engine.
Chris! Good luck at Pomona!
Jim Prevo – 632ci All Aluminum
Once again a kick ass motor.
1930#
4 link
.971″ 60′
4.04″ in 1/8 and 6.34″ in 1/4
Exceeded my expectations and many that of my competitors.
Jim Prevo
Mundelein, IL
Benny Strand – 855ci
We are now the fastest 1/8 mile nitrous car in Europe. 3.9226/188.34 with a Reher-Morrison engine and power glide.
Benny Strand
Iggesund, Sweden
Gordon Leland – 781ci
David and the Gang –
We appreciate the time and care you take to keep us running strong and Reliable.
Reliable Power is all we asked for and that’s what we got. Thanks!
Gordon Leland
Alamo Hot Rod Center
San Antonio, TX
Tech Talk #90 – Pistons and Pressure Spikes
By David Reher, Reher-Morrison Racing Engines
“The pressure curves explained what I’ve learned about racing engines through years of experience and observation.”
Unless your race car is powered by a jet engine or a turbine, a critical factor in engine performance is the pressure exerted on the pistons. The goal in race engine development is to maximize the cylinder pressure that pushes against the pistons and thereby rotates the crankshaft.
Tech Talk #89 – The Eyes Inside Your Engine
By David Reher, Reher-Morrison Racing Engines
“Spark plugs are the best source of information on what’s really happening in the cylinders.”
If you really want to know what’s happening inside an engine, look at its spark plugs. The spark plugs are eyewitnesses to the combustion process, and their expert testimony provides insights into what is really happening inside the cylinders.