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Enhanced Performance: Moroso 38770 Harmonic Balancer Bolt for Small Block Chevy Review

3

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Average

Revainrating 3.5 out of 5  
Rating 
3.7
🌫️ Exhaust & Emissions, 🛠️ Replacement Parts

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Details

MaterialAlloy Steel
Manufacturer GradeGrade 8
Head StyleHex
Fastener TypeHexagon Bolt
BrandMoroso

Description of Enhanced Performance: Moroso 38770 Harmonic Balancer Bolt for Small Block Chevy

Fit type: Vehicle Specific. Especially important when crankshaft is being rotated by hand with the use of a socket and breaker bar or ratchet handle. Manufactured of Grade 8 steel with gold iridize finish. Package Dimensions: 1.27 H x 18.288 L x 13.716 W (centimetres). Package Weight: 0.2 pounds.

Reviews

Global ratings 3
  • 5
    2
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    1

Type of review

Revainrating 5 out of 5

Highly recommended for engines and engine parts

What GM Got Wrong. No more worrying about breaking your knuckles on the radiator when you flick to reach top dead center.

Pros
  • Installation Type: Vehicle Specific
Cons
  • Long Delivery

Revainrating 5 out of 5

Perfect for my late block 880 350

Perfect for my late GM 350 with Scat 383 stroker crank. A parts brand you can trust and it's good to know the quality of the bolt is top notch and the thread pitch on the Scat crankshaft is non OEM.

Pros
  • Package Weight: 0.2lb
Cons
  • Modern

Revainrating 1 out of 5

Not as good as the original GM bolt

I prefer this replacement over Mr. Gasket as it is made in the USA and like the original screw compared to the Mr. Made in China and used essentially a yellow zinc coating. Item 1, Moroso does not include the lock washer that is required and supplied with Mr. Gasket. Of course, I knew this from the information on the box, but when you charge $12 for a screw, you'd think they could go through some kind of 20-cent lock washer. However, my main concerns relate to the potential downsides of this…

Pros
  • . Especially important when turning the crankshaft by hand with a socket and pry bar or ratchet. Made from grade 8 steel with an iridescent gold finish
Cons
  • Not bad but...