Chevy Big Block & Ford V8 Gold Zinc Steel Allen Head Exhaust Header Bolt Set

• Matched socket-head bolts for a clean, secure header-to-flange installation

• Allen/socket-head design allows clearance in tight header bolt patterns

• Fits 3/8"-16 header bolt patterns on Big Block Chevy & Ford V8 builds

• Complete 16-piece set with gold zinc finish for corrosion resistance

Get a clean, secure header installation with this 16-piece set of Allen socket-head bolts, sized to fit 3/8"-16 header bolt patterns common on Big Block Chevy and Ford V8 exhaust header applications. The socket-head design gives you clearance for a hex key in tight header bolt locations where standard hex-head bolts can be difficult to access.

Finished in gold zinc for corrosion resistance in the header area, this hardware set is a straightforward way to replace missing, worn, or mismatched header bolts on street and performance big block builds. Popular on Chevelle, Camaro, Corvette, and C/K truck big block Chevy platforms, as well as hot rod and muscle car header installations.

Always verify header flange thickness and required bolt length before ordering — not all headers use the same bolt size, and fitment depends on matching the correct thread size and length to your specific header.

Applications
Designed for exhaust headers using 3/8"-16 bolt threads. Commonly used on Big Block Chevy V8 street and performance engines, including Chevelle, Camaro, Corvette, and C/K truck platforms, as well as Ford V8 header applications and general hot rod/muscle car builds.

Installation
Confirm your header's flange thickness and required bolt length before installation — header bolt length requirements vary by header design and engine setup, so verify thread size and length against your specific header rather than assuming universal fit.

Will these bolts fit a big block Chevy 454?
Yes. The 454 is covered under both Gen II (Mark IV) and Gen V/VI Chevy big block platforms, all of which use this bolt set's 3/8"-16 thread pattern.

Does this kit work on a Ford 429 or 460 big block?
Yes. Both the 429 and 460 fall under the Ford Big Block "385" series, which this 3/8"-16, 3/4" thread length bolt set is designed for.

Will this fit a Ford 351 Windsor or 351 Cleveland?
Yes, but confirm which one you have first — 351 Windsor and 351 Cleveland are different engine families (Small Block Windsor vs. Cleveland "335" series), and this kit covers both, along with the 351M under Ford Modified "335."

What's the difference between the FE and 385-series Ford big blocks this kit fits?
FE engines (352, 360, 390, 406, 410, 427, 428) and 385-series engines (370, 429, 460) are separate Ford big block families built on different architectures. This bolt set's 3/8"-16 thread pattern is common to header bolt mounting on both, so it fits either family.

What tool do I need to install these bolts?
These are Allen/socket-head bolts, so you'll need a hex key or Allen socket sized to the bolt head rather than a standard box or open-end wrench.

Are these bolts strong enough for a performance or towing build?
They're steel construction with a gold zinc finish for corrosion resistance in the header area — sized for standard header-to-flange clamping loads on the covered Chevy and Ford big block/small block families.

Can I use this kit to replace stripped or missing header bolts on my small block Ford?
Yes, for Ford Small Block Windsor engines (221, 260, 289, 302/5.0L, 351W) — the 3/8"-16 thread and 3/4" length match this bolt set.

Do I need to check my header before ordering, even if my engine is listed?
Yes. Engine compatibility confirms your engine uses this bolt pattern, but header flange thickness and required bolt length still vary by header design — verify those two measurements against this kit's 3/4" thread length before ordering.