how do i find out what engine size my 1984 ford f150 xlt is?

Asked by May 05, 2012 at 12:20 PM about the 1984 Ford F-150

Question type: Maintenance & Repair

3 Answers


For one count the spark plug wires. Then you'll know if you have a six or eight cylinder. You can also give the vin number to the Ford dealer or even a parts store and they can tell you.


that would work as long as the engine is original that truck that old it may have been swapped out for something else. Should be a OEM tag on the rad saddle with fan belt information ect.. that will also tell you what engine the truck was built with again assuming the rad saddle has not been changed out. If it has 8 spark plugs more than likely its a 302 they were very common for the 80's.


Easiest way pull spark plug out get piston to top tdc, stick a bit of wire in bore. Mark it then turn engine to bottom bdc then mark. Measure between the two marks 3" is a 302 3.5" is a 351... or if a Windsor will be casted on heads!

3 of 3 people found this helpful.

Your Answer


Looking for a Used F-150 in your area?

CarGurus has 219,880 nationwide F-150 listings starting at $1,222.


Ford F-150 Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Ford Mustang
278 Great Deals out of 38,263 listings starting at $1,995
Used Ford F-250
411 listings starting at $3,500

Used Cars For Sale

2018 Ford F-150 For Sale
32 Great Deals out of 140,411 listings starting at $19,500
2017 Ford F-150 For Sale
167 Great Deals out of 11,426 listings starting at $18,450
2016 Ford F-150 For Sale
204 Great Deals out of 8,022 listings starting at $14,500
2015 Ford F-150 For Sale
339 Great Deals out of 10,347 listings starting at $11,990
2014 Ford F-150 For Sale
516 Great Deals out of 12,905 listings starting at $8,991

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.