A bad fuel injector poppet could cause that.
The word 'vortec' is the name of the cylinder heads used in Vortec Model engines in the year 96'+ The engines that use the Vortec cylinder heads are the 4.3L Vortec, 5.0L Vortec, 5.7L Vortec, and 8.1L Vortec. They were only put on Gen I small blocks. If they are any other size Chevy engines and still retain the Vortec name then it's purely a marketing name, the same goes is it is later than a Gen I engine. For example the new 4.2L I6 from GM retains the name Vortec, but it does not actually use Vortec heads as these heads were only made for OHV engines, and the I6 is an OHC engine. The Vortec heads are based on the LT1 and LT4 head after they were discontinued along with their reverse flow cooling design. It is simply an effect made in the head similar to a vortex to better atomize the fuel and air intake charge when entering the combustion chamber, it is not a different type of motor.
The word 'vortec' is the name of the cylinder heads used in Vortec Model engines in the year 96'+ The engines that use the Vortec cylinder heads are the 4.3L Vortec, 5.0L Vortec, 5.7L Vortec, and 8.1L Vortec. They were only put on Gen I small blocks. If they are any other size Chevy engines and still retain the Vortec name then it's purely a marketing name, the same goes is it is later than a Gen I engine. For example the new 4.2L I6 from GM retains the name Vortec, but it does not actually use Vortec heads as these heads were only made for OHV engines, and the I6 is an OHC engine. The Vortec heads are based on the LT1 and LT4 head after they were discontinued along with their reverse flow cooling design. It is simply an effect made in the head similar to a vortex to better atomize the fuel and air intake charge when entering the combustion chamber, it is not a different type of motor.
The ratio is 9.5.1 in the 350 vortec. Doing a compression test you should not have any below 100 psi and all should be similar to each other.
you may have the same problem my 350 tbi had. the cam lobe was worn excessively causing a valve not to function at all. and yes it can be one lobe on the cam worn and the other lobes on the shaft can be perfectly fine.
No it will not. The 96 vortec has a crankshaft sensor and alot of other sensors on the engine that is required so the transmission will work that will not interchange with the 92 engine. Even the fuel pump would have to be changed. You must put a VORTEC engine back in the 96 so everything will work correctly.
Fireing order is 1-8-4-3-6-5-7-2 clockwise on distributor cap. Cylinder #s are: Drivers side head front to rear is 1-3-5-7 The other head front to rear are cylinders 2-4-6-8
The intake gaskets are none to leak antifreeze. It is a real common problem with the vortec engines. Other then that there goods engines and have really no other problems.
It should be mounted to the firewall on the other side of the clutch pedal.
You must set the cam retard to plus or minus 2 degrees, or you have other problems.
Should be like any other Chevy small block, 1,8,4,3,6,5,7,2, clockwise that is. The drivers side front plug is #1.
they bounce and hit each other inside the cylinder and cause the pressure.
The shortblocks are pretty much the same, other than switching the dipstick over to the opposite side, around 87. The same year, they redesigned the cylinder heads. Changed their angle, and configuration. That was the first generation vortec. A different intake manifold is required, along with self aligning rocker arms.