13 Best Automotive Performance Flexplates

List Updated May 2020

Bestselling Automotive Performance Flexplates in 2020


Allstar Performance ALL26831 153T SFI External Balance Flexplate for Small Block Chevy

Allstar Performance ALL26831 153T SFI External Balance Flexplate for Small Block Chevy
BESTSELLER NO. 1 in 2020
  • Gold iridite plated
  • .035 inch thicker than stock
  • SFI-approved

Spectre Performance 4696 Flexplate Bolt

Spectre Performance 4696 Flexplate Bolt
BESTSELLER NO. 2 in 2020
  • For GM cars with automatic transmission
  • Includes six 7/16-20 X 11/16 - grade 8 bolts
  • Bolts have a black oxide finish
  • Security lock washers included

Chevy/GM Turbo TH-350/TH-400 Black Steel Flywheel/Flexplate Cover

Chevy/GM Turbo TH-350/TH-400 Black Steel Flywheel/Flexplate Cover
BESTSELLER NO. 3 in 2020
  • Chevy/GM black steel flywheel/flexplate dust cover.
  • Fits Chevy/GM Turbo TH-350 and Chevy/GM Turbo TH-400 transmissions.

B&M 10236 SFI Approved Performance Flexplate by B&M

B&M 10236 SFI Approved Performance Flexplate by B&M
BESTSELLER NO. 4 in 2020
  • B&M 10236 SFI Approved Performance Flexplate

GM Performance Flexplate GM LS-series 4L80E P/N 19260102

GM Performance Flexplate GM LS-series 4L80E P/N 19260102
BESTSELLER NO. 5 in 2020

BD Diesel Performance 1041210 Black FleX- Plate

BD Diesel Performance 1041210 Black FleX- Plate
BESTSELLER NO. 6 in 2020
  • 2 Times thicker than stock
  • High quality welds
  • 300% less radial run out compared to other aftermarket flex plates

B&M 20230 SFI Approved Performance Flexplate

B&M 20230 SFI Approved Performance Flexplate
BESTSELLER NO. 7 in 2020
  • Upgraded flexplate for high RPM (6000+) and performance applications, ranging from street to extreme duty racing
  • SFI spec 29.1 approved, NHRA and IHRA legal for all classes
  • Dual bolt pattern design features two bolt circles: 10-3/4" and 11-1/2"; starter ring gear tooth count is 168
  • For internally balanced setups
  • Backed by the manufacturer with a 1 year limited warranty

Hughes Performance HP3994 SFI Rated HD Flexplate with External Balance for Big Block Chevy

Hughes Performance HP3994 SFI Rated HD Flexplate with External Balance for Big Block Chevy
BESTSELLER NO. 8 in 2020
  • Flexplate - Heavy Duty - 168 Tooth - SFI 29.1 - Steel - External Balance - Big Block Chevy - Each

Allstar Performance ALL26830 153T SFI Internal Balance Flexplate

Allstar Performance ALL26830 153T SFI Internal Balance Flexplate
BESTSELLER NO. 9 in 2020
  • For Small Block Chevy Engines
  • Gold Iridite Plated, Sfi-Approved Plate Meets 29.1 Specs.
  • .035" Thicker Than Stock And Has Dual Converter Bolt Patterns

ARP 100-2901 High Performance Flexplate Bolt Kit (UHL = .680; Thread Size = 7/16-20) Chevrolet All Models (1)

ARP 100-2901 High Performance Flexplate Bolt Kit (UHL = .680; Thread Size = 7/16-20) Chevrolet All Models (1)
BESTSELLER NO. 10 in 2020

B&M 10239 SFI Approved Performance Flexplate

B&M 10239 SFI Approved Performance Flexplate
BESTSELLER NO. 11 in 2020
  • Upgraded flexplate for high RPM (6000+) and performance applications, ranging from street to extreme duty racing
  • SFI spec 29.1 approved, NHRA and IHRA legal for all classes
  • Single bolt pattern design features 10" bolt circle
  • For externally balanced setups
  • Backed by the manufacturer with a 1 year limited warranty

NEW Automatic Transmission 168T Flexplate+ HP BOLTS Chevy 350 327 307 305 68-85 (Flexplate & Bolts)

NEW Automatic Transmission 168T Flexplate+ HP BOLTS Chevy 350 327 307 305 68-85 (Flexplate & Bolts)
BESTSELLER NO. 12 in 2020
  • 168 Tooth Flexplate & Bolts

B&M 10231 SFI Approved Performance Flexplate

B&M 10231 SFI Approved Performance Flexplate
BESTSELLER NO. 13 in 2020

Understanding Mononucleosis and Treatment

Mononucleosis common infection seen during adolescence. The virus is contagious through transmission of saliva or mucus, commonly by kissing. Diagnosis of mononucleosis is confirmed by blood tests. Most effective medication being evaluated is Acyclovir.

The virus is transmitted through the transfer of saliva commonly contagious by kissing. Also, virus can be spread by coughing or sneezing (mucus suspended in the air which can be inhaled by others), sharing a glass and food utensil, transfers infected saliva. The incubation period from the initial contact of the viral infection until appearance of any symptoms or feeling ill, between four and six weeks, although in children the period is shorter. Person infected by the virus should avoid or isolate themselves from contact with others, for at least a few weeks, preventing transmission.

Most people who get mononucleosis are between the ages of 10 and 25. Those younger than 10 years and older than 30 years are less likely to be exposed to this virus. More than 90 percent occur in males. Those having been exposed to the Epstein-Bar virus under the age of 35, likely have built up antibodies. They're have developed an immunity from any future exposure of the virus. However, recovering from symptoms, the virus infection may still be found in the saliva up to eighteen months. During that time, caution should be taken to avoid spreading the virus. Mononucleosis is common among young adults, college students and active military personnel (11 to 48 cases per 1,000 persons). Fatalities are very rare, usually as a result of a spleen rupture. Symptoms of a ruptured spleen includes pain in the left upper part of the abdomen (under the left chest), feeling of lightheaded, rapid and fast heart beating, bleeding more easily than usual and having trouble breathing. Immediate medical attention is required.

The diagnosis of mononucleosis is confirmed by blood tests. Increase type of white blood cell (lymphocytes and monocytes) suggest the virus is present. (Normally account for about 35% of the white blood cells. With mononucleosis, it can become 50 - 70%. The total white blood count may increase to 10,000 - 20,000 per cubic millimeter.) Monospot and heterophile antibody tests confirm the diagnosis. Furthermore, blood chemistry test can reveal abnormalities in liver function.

Treatment for Epstein-Barr virus includes prescribed penicillin or erythromycin (Antibiotic eradicates the bacteria, and alternative for those allergic to penicillin). These medications treat strep throat, occasionally occurs with mononucleosis. Amoxicillin and Ampicillin not likely prescribe, since 90 percent of patients develop a rash. Pain relievers (analgesics) are taken to relieve body aches, headaches, and fever. Severe swollen tonsils causing breathing obstruction, Cortisone medication occasionally prescribed, such as prednisone. Recommend avoid participating in any contact sports, which may cause trauma to an enlarged spleen.

Complications have been know to occur having mononucleosis. Most common is inflammation of the liver (hepatitis). Those that have a suppress immunity system (AIDS), may develop some type of cancer in the pharynx and nose (nasopharyngeal lymppoma). Rarely Epstein-Barr virus has been associated with the development of at least one subtype of Hodgkins Disease (Cancer that starts in lymphatic tissue, includes lymph nodes found underneath the skin in the neck, underarm and groin.).

In December 2005, during the 45th Interscience Conference on Antimicrobial Agents and Chemotherapy in Washington, DC, a presentation was made by researchers of the University of Minnesota, regarding study of an antiviral drug, effective in treating infectious mononucleosis called valacyclovir. Previously during the 1980s and 1990s, valacyclovir failed to show clinical benefit, treating Epstein-Barr virus. The recent study, the drug valacyclovir lowered or eliminated mononucleosis in subjects, who took it for two weeks. According to Henry Balfour, MD, professor of lab medicine and pathology and lead investigation of the study said "This research suggests that an antiviral drug can be used to treat mono and that it might limit person-to-person spread, a promising public health benefit for college campuses. " The ten participants of the study that received the drug had significant decrease in virus found in their saliva and throat cells. In the fall of 2020, a larger clinical trial will be undertaken. A group of volunteer students will be exposed to the Epstein-Barr virus. Those that develop symptoms will be administered the new antiviral drug. Safety use of the drug will be examined and documented. Previously in 2003, the Food and Drug Administration rejected approval of valacyclovir because of a lack of safety information for use in teenagers.

Acyclovir treats certain types of herpes infections: Helps the sores heal faster, relieve pain or discomfort, and prevent the infection from coming back. Also, provides treatment for viral infections including shingles and chickenpox.

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