For a large-journal 327 crankshaft, confirm the crankshaft’s journal dimensions and the exact engine application before buying parts. The two listed 38770 harmonic balancer bolts specifically mention a 1968 Camaro 327 large-journal crank end; the Eagle crank is explicitly small-journal, so it is not the right match based on its listing. Dorman’s bolt has no fitment details in the supplied information. The leather journal is unrelated to engine parts.
| Product | Best fit based on listing | Key limitation |
|---|---|---|
| 38770 Grade 8 balancer bolt | Buyers seeking a bolt listing 327 large-journal fitment | Verify the exact engine application |
| 38770 chrome-moly balancer bolt | Buyers comparing another specified 38770 bolt | Confirm dimensions and fitment |
| Eagle SBC 283/327 crank | Small-journal applications only | Not listed as large-journal |
| Dorman 917-139 bolt | Buyers who can independently confirm fitment | Supplied details do not identify applications |
| Leather Village journal | Writing or art use, not engine repair | Not an automotive part |
38770 Grade 8 Harmonic Balancer Bolt
This is the clearest listed match for a harmonic balancer bolt associated with a large-journal 327 crank end. The listing identifies OEM replacement number 38770 and specifies Small Block Chevy 350ci, 5.7L LT-1, and a 1968 Camaro 327 large-journal crankshaft end.
Best for: Buyers who need a 38770 replacement bolt and have confirmed the listed engine application. The listing says it is made from heat-treated Grade 8 alloy steel, with strength intended for high loads and vibration.
Limitation: A bolt listing is not a crankshaft. Confirm thread, dimensions, and the engine’s actual configuration before ordering; the supplied details do not provide those measurements.
38770 Chrome-Moly Balancer Bolt
This listing also specifies 38770 and names the 1968 Camaro 327 large-journal crank end, along with Small Block Chevy 350ci and LT-1 applications. Its material is described as heat-treated 8740 chrome-moly steel with a black oxide finish.
Best for: Buyers comparing a second specifically described 38770 bolt option. The listing also explains that the bolt is used to secure the balancer and can be relevant when turning the crankshaft by hand with a socket and breaker bar or ratchet.
Limitation: The listing’s fitment language is not a substitute for checking the exact application and bolt specifications. Do not assume it fits every 327 configuration.
Eagle SBC 283/327 Small-Journal Crank
The product name explicitly identifies this as an Eagle SBC 283/327 small-journal crank. The supplied product details list package dimensions of 32.49 by 8.99 by 8.99 inches and a package weight of 55.99 pounds; they do not give journal measurements or other specifications.
Best for: A buyer researching a small-journal application who will verify the crank’s detailed specifications with the seller or manufacturer.
Important limitation: This is not presented as a large-journal crankshaft. Avoid choosing it for a large-journal 327 solely because “327” appears in the product name.
Dorman 917-139 Balancer Bolt
The supplied information identifies this product as a Dorman 917-139 engine harmonic balancer bolt, but gives no fitment, material, or dimension details.
Best for: Buyers who already have a verified part number or can confirm the application through reliable vehicle and engine records.
Limitation: The provided data does not establish compatibility with a large-journal 327. Do not treat the search result placement or product name alone as proof of fit.
Leather Village Vintage Journal
This listing is a leather-bound writing and art journal, not an engine component. Its features include a wraparound strap with brass lock, hand-stitched binding, and handmade deckle-edge paper described for writing and mixed-media use.
Best for: Someone seeking a notebook for writing or artwork. It is included only to clarify that it does not meet the automotive search intent.
Limitation: It has no stated connection to crankshafts, engine assembly, or vehicle repair. Do not consider it a replacement or repair part.
Buying Guide: How To Choose Parts For A Large-Journal 327
How can you confirm a crankshaft is large-journal?
Identify the engine and crankshaft by application and measured specifications, not by “327” alone. The supplied listings do not provide journal diameters for the Eagle crank or the balancer bolts. Consult the engine’s service information or a qualified machine shop to verify the crankshaft and bearing specifications.
Are these products crankshafts or crankshaft accessories?
Only the Eagle listing is described as a crankshaft, and it says small-journal. The 38770 and Dorman products are harmonic balancer bolts, which are related engine hardware, not crankshafts. The leather journal is unrelated.
What should you verify before buying a balancer bolt?
- Confirm the engine application and crankshaft configuration.
- Check the correct part number and required bolt dimensions against reliable service information.
- Do not assume that fitment for one Small Block Chevy or 327 configuration applies to every version.
- Ask the seller or manufacturer for missing specifications when the listing does not provide them.
Frequently Asked Questions
Does the Eagle crank listed here fit a large-journal 327?
The product name calls it a small-journal crank. The supplied information does not identify it as suitable for a large-journal 327.
Which listed products specifically mention a 327 large-journal crank end?
Both 38770 harmonic balancer bolt listings mention a 1968 Camaro 327 large-journal crank end. They are bolts, not crankshafts.
Is the Dorman 917-139 confirmed to fit a 327?
No. The supplied product details identify it as a harmonic balancer bolt but do not state 327 fitment.
Can “327” alone confirm large-journal compatibility?
No. Verify the specific engine and crankshaft configuration, along with part dimensions and application, before purchasing.
Is the Leather Village journal an engine-related product?
No. It is a leather-bound notebook for writing and art, not an automotive part.