Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. We’ll help you determine the correct flexplate for your Chevy engine in this buyer’s guide.

Small Block and Big Block Chevy Engine Flexplate Guide

Kevin W. walks through each step of installing a new alternator bracket on a 454 Big Block Chevy.

Alternator Bracket Install on a 454 Big Block Chevy

Decode small block Chevy engine suffix codes and block casting numbers with our SBC decoding info guide. Learn how to find and decipher your small block Chevy engine codes quickly and easily!

Chevy Small Block Casting Numbers

Engine Family Facets

707063f6-5cf0-44d1-8e1f-49059e48addf

3fe4cfeb-d42e-4b60-a312-2940d324f962

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Mr Gasket Ford Chevy Big Block V8 Mark IV 427 L72 Parts

Mr Gasket Ford Chevy Big Block V8 Mark IV 427 L72 Parts | Speedway Motors

Shop Mr Gasket Ford Chevy Big Block V8 Mark IV 427 L72 Parts and get Free Shipping on orders over $199 at Speedway Motors.

Mr Gasket 2231G HeadLock Locking Header Bolts, BBC

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Material Type

Thread Pitch

GTIN Code

Under Head Length

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0.75" Under Head Length, 3/8"-16 Thread Pitch

Mr Gasket 917A 100 Header Bolts

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1" Under Head Length, 3/8"-16 Thread Pitch, Steel

Mr Gasket Magnetic 15 1/2"-20 Oil Pan Plug

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Gasket(s) Included

Thread Length

1/2"-20 Thread Pitch, Gasket(s) Included

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Mr Gasket Ford Chevy Big Block V8 Mark IV 427 L72 Parts

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Mr Gasket 2231G HeadLock Locking Header Bolts, BBC

Mr Gasket 917A 100 Header Bolts

Mr Gasket Magnetic 15 1/2"-20 Oil Pan Plug

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