1968-1979 Cadillac Big Block Exhaust Header Gasket
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
1968–1979 Cadillac Big Block Exhaust Header Gasket
Gasket set engineered for big block header-to-manifold sealing on classic Cadillacs. Prevents exhaust leaks at the critical header flange interface. Built to withstand sustained heat cycling without degradation.
Key Features
- Header-flange specific fit - Seals the junction where headers bolt to the block without compromise.
- Heat-resistant construction - Handles big block exhaust temperatures without warping or leaking.
- Complete gasket set - All gaskets needed for the header installation in one box.
Specs
- Gasket set for big block exhaust header application
- Fits 1968–1979 Cadillac big block engines
What's Included
- Complete exhaust header gasket set
Frequently Asked Questions
Do I need any additional gaskets or seals beyond what's in this set?
This is a complete header gasket set — it covers all the gaskets needed for header installation. If you're also replacing manifold gaskets or other exhaust components, those are separate items.
Should I use any sealant or adhesive with these gaskets?
Header gaskets are designed to seal under clamp pressure alone. Do not use gasket sealer or adhesive unless your service manual specifically calls for it — it can prevent proper seating and cause leaks.
What do I need to know about surface prep before installation?
Both the header flange and block surface must be clean and flat. Wipe away carbon and old gasket material with a scraper, then clean with a solvent rag. A smooth, dry surface ensures a proper seal.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.