How much HP can you get from a 305?

I completely agree that a 305 can be built to make 450 hp. That’s not too difficult. The engine is limited to smaller heads with 1.94-inch valves because larger 2.02-inch valves won’t clear the cylinder wall.

Is a 305 a good engine?

Despite sharing the same designation as the ever-popular 5.0L from the Ford camp, the 305 Chevy is viewed as a second-class citizen in the Chevy hobby. In reality, 305 Chevys (including our carbureted LG4 version) make great street engines and can be the basis for impressive performance machines.

Is the 305 a bad engine?

Whether you’re considering the potential profit or not, the Chevy 305 is a very reliable V8 that gets amazing fuel economy for its era. It may not be the most powerful option there ever was, but owners can fix that with aftermarket modifications if that’s what you’re after.

What kind of rebuild does a Chevy 305 need?

Model: 1978 GM Chevy 305 5.0L OHV 16V V8. The popular 305 Chevy small block was due for a rebuild, this is a stock engine, not a racer. Inspection, Teardown, and Cleaning. Block Work: Bore, Hone, and Deck the engine block. Head Work: Valve Job includes Resurface, Grind valves, Cut 3-angle valve seats, New Exhaust guides and valve stem seals.

What kind of engine is in a 1978 Chevy 305?

305 Chevy Engine Rebuilding Service. Model: 1978 GM Chevy 305 5.0L OHV 16V V8. The popular 305 Chevy small block was due for a rebuild, this is a stock engine, not a racer. Inspection, Teardown, and Cleaning.

What kind of manifold do I need for a Chevy 305?

Purchase and install a TPI (tuned port injection) upper and lower intake manifold designed for a 1980s 305. The lower TPI manifold won’t quite align with the L98 heads, so you may need to gasket-match the intake to the heads with a die-grinder. If you don’t know how to port cylinder heads, have the machine shop do it for you.

What kind of race headers do I need for a Chevy 305?

Purchase a set of long-tube race headers with primaries no more than 1.5-inches in diameter and have them coated inside and out with thermally insulating ceramic powder-coating.