Chevrolet Caprice 1986 Cylinder Numbering

preferably put engine on a stand, with flywheel on and starter motor installed. take a battery and a pair of jumper cables and hook the positive end to the big terminal on starter and a small wire to small terminal thats toward block. then touch small wire to battery positve to engage starter, engine should crank over.

replace the battery as well. the bad alternator may have fried the battery.

firing order of a small block chevy engine is 1-8-4-3-6-5-7-2, clockwise-#1 on the front driver side (1,3,5,7 on driver sied, 2,4,6,8 on passenger side)-#1 should be about the 7 o'clock position, but to be certain, rotate the crank (loclkwise) until the 0 degree mark on the balancer lines up with the scale-look at the installed rotor-it is either pointed at the 7 o'clock position or the o'clock position-with the plug in #1 removed, rotate it again to see if the cylinder pushes air (compression)-that is where #1 plug wire belongs. just plug them in in order (18436572)-you will still have to time it to start, they usually need to be set a few degrees before top dead center.

Make sure all peripherals are equipped as the 305 was - so you'll want a pump that flows the same rate as the 305 from the 91. If the 87 has a similar sized engine, the OEM pump should be fine.

Here is the firing order for that vehicle and engine.

look on intake front side it will tell you the firing order

You have foru engine sizes there, check the next diagrams...


1990 Chevrolet Caprice 4.3 liter V-6 VIN "Z"




1990 Chevrolet Caprice 5.0 liter V-8 (305)




1990 Chevrolet Caprice 5.0 liter V-8 (307)




1990 Chevrolet Caprice Classic 5.7 liter V-8 VIN "7"




Hope helps with this (remember rated this).

The 305 will fit right in there, if you already have a v-8 in the car, if the car is a 6 cylinder car you will need to change the exhaust, the radiator,and reposition the motor mounts on the frame. This sounds difficult, but since this car was built with a v8 in it you should be able to find all the parts you need in a salvage yard.

Check the fuel pump pressure.
Also can replace the fuel filter, cheap and might help.

your problem is worn cylinder ring this is where the compression comes from you need to rebuild the engine