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How do you tell the difference between a 305 and a 307?

How do you tell the difference between a 305 and a 307?

307 uses a 3.25(same as 327). the 305 uses a 3.736″ bore where as a 307 uses a 3.875 bore. a 305 is basically a destroked 350 and a 307 is basically a stroked 283. all the bolt on parts such as heads,intake, oil pan,water pump,cam,timing chain, etc, etc will interchange as it will with basically any other small block.

Is the 305 engine the same as the 350?

If a bore measurement is to be taken, Popular Hot Rodding identifies the 305s small bore at 3.736 inches. Both the 305 and 350 have the same 3.48-inch stroke. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

Where do I find the factory ID number for a 305 engine?

According to the Nasty Z28 site, the prefix portion begins with a letter followed by four digits indicating the month and day of manufacture. The letter identifies the engine manufacturing plant. The date “0225” translates as February 25. Identify the suffix portion of the ID number.

How to identify a 305 cubic inch engine?

Complete identification information is provided when matched to the suffix identification charts found on Nasty Z28s website. Matching the suffix portion of the engine ID number properly identifies the engine as a 305 or 350 cubic-inch. If a bore measurement is to be taken, Popular Hot Rodding identifies the 305s small bore at 3.736 inches.

How big is the stroke on a 305 engine?

If a bore measurement is to be taken, Popular Hot Rodding identifies the 305s small bore at 3.736 inches. Both the 305 and 350 have the same 3.48-inch stroke.

If a bore measurement is to be taken, Popular Hot Rodding identifies the 305s small bore at 3.736 inches. Both the 305 and 350 have the same 3.48-inch stroke. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

What does the ID number on a 305 engine mean?

The ID number stamped on the block consists of at least eight positions. According to the Nasty Z28 site, the prefix portion begins with a letter followed by four digits indicating the month and day of manufacture. The letter identifies the engine manufacturing plant. The date “0225” translates as February 25.

If a bore measurement is to be taken, Popular Hot Rodding identifies the 305s small bore at 3.736 inches. Both the 305 and 350 have the same 3.48-inch stroke.

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Ruth Doyle