Can you put 454 heads on a 366?

396-454-427 heads would bolt on, but the larger valves might hit the cylinder walls in the smaller bore of a 366. Also the much larger combustion chambers would leave a 366 with very low compression, around 5/1 I suspect.

Is a 366 A small block or big block?

The 366 big block is one of Chevrolet’s big block engines. The big block Chevrolet (BBC) was mainly used on school buses and medium-duty pickup trucks. Chevrolet ended production of the 366 BBC in the 1990s. The GMC Silverado 2500 and Sierra 3500 are two examples of pickup trucks that used the 366 BBC.

How do I know what Chevy heads I have?

Chevy heads have often been identified by sight and most commonly by the different casting shapes on the ends of the cylinder heads. While these casting marks cannot tell specifics about the cylinder heads, they can help identify a performance head from a non-performance head.

What degree heads are LS heads?

This is why the original production LS heads use a 15-degree valve angle.

What did a 366 big block come in?

366. The 366 cu in (6.0 L) Big Block V-8 gasoline engine was used in Chevrolet medium duty trucks, school buses and police sedans. It had a bore and a stroke of 3.935 in × 3.76 in (99.9 mm × 95.5 mm). This engine was made from the 1960s until 2004.

How much oil does a 366 Chevy hold?

oil is low and looks like sludge I’m going to see if it will run this weekend. Hi Mike, It should take 8 quarts with the normal filter or 9 with that big long dude.

What are the best flowing LS heads?

The LS6 was designed specifically by GM to surpass the LS1 as the best performance head, and it did such a good job that the “243” casting was recycled on the LS2. Aside from the LQ9, which is a copy of the LS6, these are the best performing of the OEM cathedral ports.

Are 706 heads better than 243 heads?

706 heads tend to be more popular than 243 heads with those who run naturally aspirated engines. While they don’t have the same size combustion chamber they also don’t have the tendency to lower the compression ratio and reduce horsepower.

Who made the 366 engine?

The 366 engine was produced by General Motors from the 1960s to the mid 1990s. This engine was used for medium duty trucks and school buses.