in 1988 the 4.3L V6's had 150 Horse power and 230 feet of trouqe in 1989 they bumped the horsepower rateing up to 160
Yes it will bolt right up to it.
The fuel lines around the filter; you will need an adapter.
.043
.43L. 1000ml=1L
It should be on the front of the intake manifold directly above and behind the water pump.
Don't know what year you have but some sensors are temperature sensitive and you should run a 195 degree thermostat.
4L60/E l
43L of 18-k gold
There is one before and one after the catalytic converter.
as far as i know the 4.3 is a v6 which is actually based off of the 5.7. gm just cut 2 cylindars off if there is a difference it will be the heat range on the plugs for your info, the Chevy 4.3 ltr in a 94-96 caprice is a 265 v-8, do some research before giving info on engines you know nothing about. oh and by the way, the power rating in a stock 4.3 v8 is higher than a stock 5.0 and also the correct answer is NO, the spark plugs are no different than the 305 or the 350.
The EGR valve on your Astrovan is on the backside of the intake manifold just under the throttle body attached by two bolts. After installing a new gasket be sure and torque the BOLTS to 17-18ft lbs or the NUTS (if yours has studs) to 15ft lbs)
There is no adjustment required, but you can clean it with a carb cleaner.