How do I identify a 305 Chevy engine?
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.
How much horsepower does a 1985 Chevy 305 have?
What are the specs for a 305 Chevy engine? It’s a 305 cubic inch (5.0 liter) small-block V8, featuring a 3.743-inch bore. Depending on the year and engine sub-model, you can see HP ranging from about 160 to 230.
How much HP do heads add?
Depending on your cam, you can gain anywhere from 40-70hp. Cam and heads can gain you 100+hp.
When did the Chevrolet 305 V8 engine come out?
As America faced an energy crisis and the government began to regulate a car’s emissions, General Motors made adjustments to many of their small block, V8 engines. GM introduced the Chevrolet 305 engine in 1976 to provide a smooth driving performance while allowing for lower octane fuels and lower emissions.
Is the Chevy 305 the same as the 350?
GM might not have made the 305 as performance-oriented as its big brother 350, but they sure made a lot of them. The Chevrolet 305 was the engine of choice for millions of full-sized GM cars and trucks that were too large for a V6 but didn’t require a 350 just to cruise around town.
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.
How can you tell what year a Chevy engine was made?
If a manual is unavailable, locate the block casting number beside the block date number. Match your block’s casting number to an online list of Chevy block casting numbers, which will indicate the years during which your engine was manufactured.