Made entirely form steel and is externally balanced, Has an outside diameter measuring 6.5" and a 63 tooth count, Designed to work with 1 piece rear main seal SBC engines such as 602 & 604 Crate, This is a coupler and flywheel are all in one for Bert reverse mount bellhousings
Bert Transmission 311-NC-EXT Steel Coupler, GM Crate Bert Transmission
Bert Transmission 311-NC-EXT Steel Coupler, GM Crate
Sku # 736311100
Mfr. Part # 311-NC-EXT
Condition
New
Brand
Bert Transmission
Sold
Each
Details
Info
  • This is a coupler and flywheel are all in one for Bert reverse mount bellhousings
  • For 1 piece rear main seal SBC engines such as 602 & 604 Crate
  • Externally balanced
Specs
Material Type
Steel
Sold in Quantity
Each
Rear Main Seal Style
1-piece
Engine Balance
External
Outside Diameter
6.5
Tooth Count
63
Flywheel Insert Diameter
1.25
MFG. Part #
311-NC-EXT
Reviews

Works great!

Rated
Product Rating
by Max Stout Motorsports on October 07, 2021

Summary: Perfect fit and works great.

Yes, I recommend this product.

Yes

Rated
Product Rating
by Curtis on March 04, 2021

Summary: Good

Yes, I recommend this product.

Well pleased with this product

Rated
Product Rating
by Chip on May 02, 2017

Summary: Worked perfectly. No problems with installation

Outstanding well designed and engineered products

Rated
Product Rating
by Stroker ace on April 17, 2017

Summary: Used this product on a 604 crate in a dirt latemodel. I was impressed with the one piece design incorporating the coupler, 'flex plate' and balancer. No way to mess this installation up.

Yes, I recommend this product.

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