SKU: 48411980301

MACE ALLOY MAIN GIRDLE TO SUIT HSV AVALANCHE VY VZ LS1 5.7L V8

Sale price$114.30 Regular price$127.00
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

MACE ALLOY MAIN GIRDLE TO SUIT HSV AVALANCHE VY VZ LS1 5.7L V8This main cap girdle is designed to reduce "cap walk", stop block web flexing and eliminate cracking of the main caps block webs; this is achieved by boxing in the main caps. Our light weight girdle evenly distributes load and dampens harmonics by bolting the main cap studs together to create a super strong rectangular cage. The brace nearly doubles the main web support area in the engine. In addition, due to the close proximity of the main stud

This main cap girdle is designed to reduce "cap walk", stop block web flexing and eliminate cracking of the main caps/block webs; this is achieved by boxing in the main caps. Our light weight girdle evenly distributes load and dampens harmonics by bolting the main cap studs together to create a super strong rectangular cage. The brace nearly doubles the main web support area in the engine.

In addition, due to the close proximity of the main stud girdle to the crankshaft and rods it also aids in stripping oil off of the crank, which in itself yields a net gain in HP.

Fabricated from 12.5mm thick 6061-T6 aluminium, these girdles are a must for high rpm/high horsepower applications where block rigidity is critical.


Contents:

  • Alloy main girdle

Vehicle Fitment Guide


Notes:

  • This girdle fits all GM LS variants except for LS7 and LS9.
  • This girdle is compatible with OEM windage tray, main caps and sump.
  • This girdle will clear up to a 4" stroke.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 48411980301

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4.4 ★★★★★
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Don R
Los Angeles, US
★★★★★ 5
Good
Good quality
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Reviewed in the United States on April 28, 2026
B
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bad item
Bozeman, US
★★★★★ 5
good replacement
good
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Reviewed in the United States on February 28, 2026
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Gary C
New York, US
★★★★★ 5
Seal
Perfect, worked great!
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Reviewed in the United States on June 4, 2025
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TinyTim
Natrona Heights, US
★★★★★ 5
Great
Great
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Reviewed in the United States on August 5, 2025
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Jp
Alexandria, US
★★★★★ 5
Perfect
Perfect fit on my gen 1 out drive
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Reviewed in the United States on December 21, 2024

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