In a V8 engine, the ideal compression ratio typically ranges from 8:1 to 10:1 for standard applications, while performance engines may go as high as 10:1 to 12:1 or more. The specific compression ratio depends on factors like fuel type, intended use, and engine design. It's important to ensure the compression is balanced for optimal power output and efficiency without causing knock or pre-ignition. Always consult the manufacturer's specifications for the best results.
Tosh says you should of had a v8
Blown head gasket is one cause.
9.4.1. I'am thinking it is.. can anyone correct me if you can please...
Oil burning or loss of compression on any one cylinder. It may also be missing on one cylinder. A compression test will verify this.
My 1991 Ford Mustang 5.0 liter V8 ( LX ) had a compression ratio of ( 9.0 to 1 from the factory ) ( 8th " character of VIN was an " E " )
According to my best knowledge the '67 Tempest LeMans was available with: 400/360 HP Ram Air V8 Engine 428/360 HP 4bbl V8 Engine 428h.o./376hp 4bbl V8 Engine 230/265HP Inline 6 Engine Tempest 326/250 HP V8 Engine (<- the default engine) Tempest 326/285 HP 4bbl (<-differs from the above only in the higher compression #141 heads. [again best of my knowledge])
The lowest reading cylinder should not be less than 70% of the highest and no cylinder reading should be less than 689 kPa (100 psi). Perform compression test with engine at normal operating temperature, spark plugs removed and throttle wide open
120-150 psi
The V8 engine has ( 8 engine cylinders )
The ford 4.6 v8 engine rotates in a clockwise direction looking at the front. This should be the same for most Ford engines.
The compression ratio for the 2005 Chevrolet Silverado with a 5.3L V8 engine is typically around 9.5:1. This engine is part of GM's LS series and is known for its balance of power and efficiency. The compression ratio can vary slightly based on specific configurations or modifications, but 9.5:1 is the general specification for this model.
Depending what make it is; Deville has a 4.9 (V8). Deville Concours 4.6 (V8)Northstar engine. Eldorado has the 4.6 (V8) Northstar engine. Fleetwood 5.7 (V8) Seville 4.6 (V8) Northstar engine.