Although Lawrence is no longer involved, his influence still reverberates as a result of this program. The World program of one James Lawrence, who just so happens to have been the co-founder/former part owner of /NMCA parent company ProMedia Publishing.
What is a blower motor drag racing mod#
Interestingly, this whole concept of centrifugal superchargers in Pro Mod started with the Radial vs. Blincoe’s Corvette, built by David Monday Race Cars, has gone back and forth between RvW and Pro Mod trim this year, competing at the Duck X Productions Sweet 16 2.0 and No Mercy 10, as well as all of the NMCA races to date. “These engines are 548 cubic inches instead of the Pro Mod-legal 520s, and they have outlaw valves instead of legal valves, but it still gives them some kind of representation of what it’s going to do at 2,600 pounds on the same track in the same conditions,” Dillard explains.
Rivenbark shocked the world earlier this year at the Sweet 16 2.0 race held at South Georgia Motorsports Park, carding a 3.587 at 206.67mph pass with an engine that is extremely similar to-yet different from-one used in traditional Pro Mod competition. and Jim Widener.Įric Dillard of Pro Line Racing has much to share on the topic of building engines for this combination, as the company has been at the forefront of development for the Galot Motorsports-backed cars of Kevin Rivenbark and John Strickland. He finished the season in third place behind Don Walsh Jr. Tom Blincoe has campaigned his ProCharged VP Racing Fuels Xtreme Pro Mod Corvette to sustained success in NMRA competition in 2019. For example, cars with engines using the traditional 4.84-inch bore spacing can deduct 75 pounds, and an extra 100 pounds is added to those cars running 5.3-inch bore-space engines. In the VP Racing Fuels Xtreme Pro Mod class, small-block centrifugal-supercharged combinations can weigh 2,250 pounds, while 5.0-inch bore-space, big-block combinations are a little heavier at 2,425 pounds and are used as the benchmark with adders and deducts for other configurations.
What is a blower motor drag racing series#
However, the inclusion of centrifugal superchargers into NMCA VP Racing Fuels Xtreme Pro Mod-and the Pro Mod classes of other series with the exception of NHRA at this time-opened the door for mainstream centrifugal supercharger companies like ProCharger and Vortech to enter one of the hottest classes in modern drag racing. Until recently, blown combinations were mostly centered around Hemi engines topped off with either a roots- or screw-style supercharger. There are guys that can modify the Superman to get some more boost BUT by the time you buy the blower and pay to get it modified you will find that the total cost is the same as buying a new M5 and the M4 would have been a little cheaper and the M series would have still produced more boost.Photography by FSC Archives/Tara Bowker/Courtesy of the Manufacturersįor many years, the Pro Mod eliminator enjoyed three main options for extra-atmospheric vehicle propulsion: superchargers, nitrous oxide injection, and turbochargers-with the latter two choices mostly self-explanatory. The regular K-11 Superman is a very affordable 20% OD blower but does produce a little less boost. The M series cast cases are very accurate in tolerances from front to back. The M series blowers have a cast case but also can be ordered with billet cases and are yours to keep. The DMPE M4 and M5 both have the same X3 rotors and the big difference is that the M5 is more tunable because of the removable pieces on the top. I have heard that the blower sold by Troy is in fact a Chuck Ford CFH blower. As was said these have an $18000 price tag. It appears from the outside that the Chuck Ford blowers is a billet Superman or very close to it.
The billet case corrects the inaccuracies of the cast case so that the rotors fit better and the clearances are the same from front to back. The Chuck Ford blower (CFH) claim to fame is in the billet case. This is a great way to keep the modifications secret and to keep in business. I believe that Al Billes was the first one to start doing this and now others have followed. It is put on for the race then disappears after the race. You don’t even get to touch the blower or the hat.
Some of these exotic blowers mentioned in previous posts can only be leased for a race at a time and I believe you would have to have very deep pockets or a great sponsor to afford the cost of the lease. I believe that one pound of boost is equal to 150-170 HP and I might be a little conservative in my estimation. All needs to be matched and adjusted for max boost. The blower, the length of the top opening in the blower, the hat, and the spacer between the hat and the blower is where the power is. Like I said before first you are going to have to decide on how much money you can afford and how competitive you want to be. Some thoughts on blowers for 20% OD NHRA.
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