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

Learn how to swap out an LS engine with a modern fuel injected engine into a hot rod for added horsepower, fuel economy, or throttle response. View a list of parts and helpful tips to complete the installation.

LS Swap Guide: GM 3 Speed / 4 Speed Parts List

Engine Family Facets

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Connecting Rod Bolts 2Nd Gen Gm F Body Gm Chevy Mark Iv V8 Big Block 427 L72

Crankshaft Main Bearings 2Nd Gen Gm F Body Gm Chevy Mark Iv V8 Big Block 427 L72

Harmonic Balancer Bolts 2Nd Gen Gm F Body Gm Chevy Mark Iv V8 Big Block 427 L72

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2nd Gen GM F-Body Chevy Big Block V8 Mark IV 427 L72 Harmonic Balancers

2nd Gen GM F-Body Chevy Big Block V8 Mark IV 427 L72 Harmonic Balancers | Speedway Motors

Shop 2nd Gen GM F-Body Chevy Big Block V8 Mark IV 427 L72 Harmonic Balancers and get Free Shipping on orders over $175 at Speedway Motors.

TCI 870004 Chevy B/B V8 Int Balance Rattler Harmonic Balancer

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6.29" Outside Diameter, 18.1 SFI Rating, Steel

TCI 870005 Chevy B/B V8 Int Balance Rattler Harmonic Balancer

7.17" Outside Diameter, 18.1 SFI Rating, Steel

PRW 2439640 Race, SFI-Rated, Chev 396-427 1966-92, 0-Bal, 8.00"

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2nd Gen GM F-Body Chevy Big Block V8 Mark IV 427 L72 Harmonic Balancers

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TCI 870004 Chevy B/B V8 Int Balance Rattler Harmonic Balancer

TCI 870005 Chevy B/B V8 Int Balance Rattler Harmonic Balancer

PRW 2439640 Race, SFI-Rated, Chev 396-427 1966-92, 0-Bal, 8.00"

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