Free shipping on eligible orders of $100 or more. Oversized and freight items excluded.

Shop parts / Cometic Gasket / Clearance

Cometic Street Pro GM 1970-85 454ci Big Block Bottom End Gasket Kit

Cometic Gasket · Clearance

Cometic Street Pro GM 1970-85 454ci Big Block Bottom End Gasket Kit

MPN PRO1005B · Store SKU cgsPRO1005B

Price on request
CHECK AVAILABILITY0 in supplier warehouses. Ask JuiceBuilt about availability.

Supplier stock checked 11/7/2026, 5:17:39 AM UTC. Adding a part does not reserve it.

FINAL SALE — NO RETURNS OR REFUNDS

Clearance and scratch-and-dent parts are final sale. No returns or refunds.

Shipping & returns ↗This policy does not limit rights required by law.

Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

COMETIC StreetPro Kits cater to the budget-minded street-rodder who is looking to purchase a kit with all necessary gaskets and seals needed for their rebuild. Quality gasket materials are a priority in StreetPro kits. Kit materials include: MLS, AFM, Aramid Fiber, and Armor Clad. Cometic Street Pro Kits are geared toward the street rider who is looking to purchase a kit with all necessary gaskets and seals needed for your rebuild. Chevrolet Mark-IV Big Block V8 Bottom End Gasket Kit

Manufacturer fitment & guides

Check PRO1005B against the manufacturer’s application information below.

Part-specific notes

  • California Proposition 65: Y
  • Clearance item. All sales are final under the supplier clearance policy.
More from Cometic Gasket ↗See the JuiceBuilt workshop ↗

YOUR NEXT MOVE

Your build.