Users' questions

What size is a 305 bored 30 over?

What size is a 305 bored 30 over?

opinions on a 305 bored .30 over 30 over = 310 cubic inches. Not too sure that the crack would work the block would have to be modified.

Can you stroke 305?

The 305 uses a tiny 3.736-inch bore and the same 3.48-inch stroke as the 350ci motor. While it’s relatively easy to drop a 3.75-inch stroke crank in a 305 block to create a 0.030-over stroker that displaces 334 inches, it’s just not a great performance decision for several reasons.

What was the goal of the 305 small block?

Objective Using traditional hop-up techniques, Lunati’s goal was to achieve maximum performance at an affordable price from the 305 small-block in a non-emission-controlled environment. The engine should be capable of running on the street, with decent idle characteristics and low-end torque.

What kind of engine is a 305 cubic inch?

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. Both the 305 and 350 have the same 3.48-inch stroke.

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.

How to get 350 horsepower out of a 305 Chevy small block?

Bolt a 500 cfm carburetor to the manifold atop the nitrous plate, and install a GM High Energy Ignition (HEI) distributor with 8 mm plug wires. Use a set of high heat-range plugs that can withstand the nitrous, and use a nitrous-compatible ignition control box to retard timing while running under nitrous.