I replaced the head gaskets on my 1988 chevy silverado 3500 with a 7.4 liter 454 engine and now it wont start

SOURCE: 1997 chevy silverado 3500 with

We found the problem by taking the truck to the dealership, after spending $550.00 on parts and having everything we could remove tested or we purchased them new and replaced them. We spent two weeks on it and took it to Chevrolet but it took them three days after all we had done, the problem turned out to be the gear on the distributor, sure we replaced every part in it but because we could not get the distributor out with the intake on it we had not even considered the gear, thanks for your assistance and maybe we'll try you again next time....Thanks again.

SOURCE: Need transmission info for 1988 Chevy Silverado 454 C3500 dually

My 1988 Chevrolet C3500 With A 7.4L (454) engine has a TH400 in it.

SOURCE: how to replace oil pressure switch on 1988 Chevy

Hi my name is Tom and I am here to help.

aaah!! the wonderful chevy 350. Probably the best engine ever made. It has had a track record few other engines can match.

Enough of old school. Unless they have moved the sensor in the last 30 years, you should find the sensor below the head 1/2 way to the oil pan.

Remove the electrical connection on the top and using the proper open ended wrench unscrew the sensor. Replace with new sensor and reattached the wire and you are home free.

If I forgot something or I can be of further help feel free to call or email me. Either way, please rank my advice so I can become a better helper in the future.

TomE(414-475-5968)