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Check the spark plugs and wires Do a compression test
A good 454 will have at least 150 PSI per cylinder.
You will have to do a compression test yourself to know that. A engine that is in good shape should have at least 150 LBS. per cylinder. There can not be more then 20 LBS. difference in any cylinders. It has to have at least 100 LBS. for the cylinder to fire at an Idle.
454 is total volume in cubic inches for all cylinders together. Chevy = Chevrolet. The brand.
If your 454 have low compression piston, you can replace it with high compression but you will need to use premium (91 octane) gas, but it will make noticable power difference
If any two adjacent cylinders have low compression it's probably caused by a blown head gasket.
This sounds like your head gasket has blownbetween cylinders 2 & 3.this will cause a compression loss on the affected cylinders.you need to have a compression test carried out on your engine.AnotherIf you're CERTAIN that the spark is good and it's timed properly, next I'd check the compression in those two cylinders. It's suspicious to me that the two non-functional cylinders are adjacent. If the engine has overheated any time in the last year you have probably warped the head. A simple compression test will tell the story.
The compression on the cylinders of a 2001 Holden Rodeo diesel 2.8lt is not stated. It is stated that the 2001 Holden Rodeo diesel 2.8lt has a high compression g200z motor.
it depends if you have a 305 or 305ho , 305 8:1 compression cupped cylinders 305ho has 9:1 compression with valve cut pistons
If you have no compression in all 4 cylinders your timing belt is broke.
It depends on equal compression between all cylinders.
You can't... There's not enough steel in the cylinders to bore it that far. If you want a 454, you need to by a big block 454 Chevy engine.