Are Chevy 350 and 305 heads the same?
The 305 heads I used had a smaller combustion chamber than the 350 heads that were on the motor originally so it bumped the compression a little. The downside was the heads also had smaller valves so that was a bit of a disadvantage.
What is the compression ratio of a 350 with 305 heads?
Assuming you have a 350 that has 4.030 bore, -. 005 deck height, . 040 head gasket, 5 cc flat top pistons, with 76 cc heads the compression ratio would be 9.04 to 1. With the 58 cc heads, it would be 11.3 to 1.
Are 305 and 350 the same size?
A Chevy 305 has a 3.74″ Bore with a 3.48″ Stroke. A Chevy 350 has a 4.00″ Bore and a 3.48″ Stroke. So technically its just a smaller bore. The 305 heads are 53cc chambers and can be put on a 350 to increase compression, but at the minor expense of flow.
How can I make my 305 engine faster?
How Can I Make My 305 Faster? As the stock exhaust manifolds restrict the flow of air from the engine, and with that increases back pressure, replacing them is a must. Replacing the intake manifold and carburetor will help…. You can add cold air induction to your home.
Can you put 350 heads on a 305 engine?
Virtually any 350 heads will work on a 305. The high compression 350 heads are similiar in combustion chamber size & intake valve size to the 305 heads & will give a 305 the same performance as if using 305 heads.
How much compression should a Chevy 305 have?
With 8.6:1 compression and a grossly mild hydraulic cam, a stock LG4 ’82 Camaro 305 wheezed out 145 net hp at 4,000 rpm and only 165 lb-ft of torque at 4,200, as installed in the car complete with a catalytic converter.
How do you tell if its a 305 or 350?
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 305 have?
What Is The Horsepower Of A 305 Chevy Engine? Chevrolet’s 305 engine made between 220 and 230 horsepower, depending on how the car made them.
How much horsepower can you get from a 305?
So a 305 up against a 350 (even at the same horsepower) will always lose to the larger engine because the 350 will make more torque. I completely agree that a 305 can be built to make 450 hp.
How much HP does a 305 small block have?
The 305 Chevy engine covers many years and models. 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 horsepower does a 305 crate engine have?
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.
Can I put 305 heads on a 350?
WELLWOOD’S SHOP OF HORRORS You will find lots of hate on this one. Putting 305 heads on a 350 was a good way to bump compression back in the day when compression was low, and aftermarket heads were almost “unattainable.” Those days are long gone, and decent heads (be they aftermarket or Vortec) are cheaper than getting work done on old heads.
What is stock compression for a stock 305?
What is stock compression for a 305 8.0 to 1 or so. If you put 350 heads on a 305 that are say 76cc, your compression would be around what 7.0 to 1.
How many valves on a 58cc head?
The heads are 58cc with all new 1.94/1.5 valves, and a 3 angle perf. valve job. It was advertised to me that they (with good cam) could possibly raise my compression 1 full point or so.