McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Phone

800.979.0122

Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
Speedway Motors Logo
America's Oldest Speed Shop ®

Search

Small Block Chevy 400 Harmonic Balancer, 8 Inch, Plain Steel

SAME DAY SHIPPING! Most orders ship within 24 hours.

Specs
Weight:
12.59
Sold in Quantity:
Each
Outside Diameter:
8.00
SFI Rated:
No
Garage Sale:
No
Small Block Chevy 400 Harmonic Balancer, 8 Inch, Plain Steel
Small Block Chevy 400 Harmonic Balancer, 8 Inch, Plain Steel
Small Block Chevy 400 Harmonic Balancer, 8 Inch, Plain Steel

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

Small block Chevy 400 c.i. V-8 stock-type replacement 8" harmonic balancers. External Balanced. Dampers are designed for press fit.

  • Ring and hub are bonded (vulcanized) to the elastomer
  • Surpasses the reliability and strength of OEM
  • NOT SFI-Approved

Customer Reviews

This product has no reviews.

Product Q&A

3 questions : 3 answers

Will this balancer work on your 383 cranks or just OEM 400 cranks

1 answers
Racer2d
February 25, 2015

Will this balancer work on your 383 cranks or just OEM 400 cranks

Answers

February 26, 2015
EricM
A 400 type balancer such as this will be required for any 383 that is externally balanced. If your 383 is internally balanced it will require a 350 balancer.

What is the R.P.M. range of this product?

1 answers
Chris
Texas
January 30, 2012

What is the R.P.M. range of this product?

Answers

January 31, 2012
Jason
The manufacturer tests these balancers up to 7500 RPM

I have a 71 4x4 k5 Blazer with a 350 sb manual transmission,internally balanced ..BUT..I have 2 DIFFERENT harmonic balancers... 1) 6.75" 2) 8.00" I DO NOT know the weight of these balancers, is there a difference? Is one size for manual? Automatic?

1 answers
Brenda
Westlake Village, CA
June 11, 2011

I have a 71 4x4 k5 Blazer with a 350 sb manual transmission,internally balanced ..BUT..I have 2 DIFFERENT harmonic balancers... 1) 6.75" 2) 8.00" I DO NOT know the weight of these balancers, is there a difference? Is one size for manual? Automatic?

Answers

June 16, 2011
John
This harmonic balancer is 8” and designed specifically for the Small block 400 which is externally balanced and cannot Be used on a 350 internally balanced engine. We do offer an 8” balancer for the 350 internal balanced engine under part number 91015357. Care needs to be taken for correct match up of the balancer to the engine or severe vibration and internal damage will occur.
Page 1 of 1

You may also be interested in:

Chevy 383-400 Lightweight Balancer, 6-3/4 Inch
(Part #91015364)
                        

This 6-3/4" balancer fits 383/400 c.i. Small Block Chevys and only weighs 7-3/4 lbs. Plus, the balancing cut out is on the backside so they can't tell what crank you're running. Damper is a press-on fit.

  • Durable nodular iron construction
  • High temperature elastomer bond
  • This balancer is 1.20" thick
  • Rated to 6,500 RPM
  • NOT SFI approved 
Speedway Chrome SB Chevy 400 Fluid Crank Damper, 7-1/4 Inch
(Part #91015329)
                        

Chrome plated steel balancer for S/B Chevy 383/400 c.i. V-8. Degreed from 10° ATDC to 50° BTDC. SFI serial number and timing marks are engraved on the outer ring.

  • Forged from 1025 low carbon steel  
  • Injected with high viscosity silicone fluid
  • External Balance 
  • Rated to 12,500 RPM
  • SFI 18.1 certified
  • 1.53" thickness excluding hub
Small Block Chevy 400 Harmonic Balancer, 8 Inch, Stainless Steel
(Part #91015415)
                        

Small block Chevy 400 c.i. V-8 stock-type replacement 8" harmonic balancers. External Balanced. Dampers are designed for press fit.

  • Ring and hub are bonded (vulcanized) to the elastomer
  • Surpasses the reliability and strength of OEM 
  • Features a show quality polish and includes 60° of easy to read timing marks
  • NOT SFI-Approved
MSD 8985 Timing Tapes
(Part #5478985)
                        

MSD's timing tape set comes with eight different tapes to fit balancers from 5-1/4" to 8" diameters.

MSD Rebate (Link)

ARP Fasteners 234-2501 Small Block Chevy Balancer Bolt & Washer
(Part #1012342501)
                        Made from 8740 chromoly. Bolt feature increased diameter for improved accessibility and easy wrenching. Hardened parallel ground washer prevents galling while promoting even torque loading. 170,000 PSI. 

  • For S/B Chevy
  • UHL - 2.470"
  • Thread Size - 7/16-20
  • Wrenching - 13/16"
  • Washer Included
Aluminum Lower Pulley Screw Kit, Coarse Thread
(Part #91015442)
                        

Set of three Allen bolts for lower aluminum water pump pulley.

  • Coarse Thread