I have a stock 1989 F-150 5.8L V8. I am wondering what the hp on this engine is and whether its a 351W, 351M, or 351C. Any info would help thanks.

 

Also my engine has a high pitched whine when I give it gas, if anyone knows what this is or how to fix it I would apprciate the help.

 

Hi, all the new 351s are windsors as for your noise we need a little more info does it sound like vacume or exhaust could it be a bearing in one of the acc.???? John

 

Your truck has 210 hp and 315 ft-lbs. Whine could possibly be water pump bearings but they usually whine at idle too if they're gone and tend to whine more when hot than cold.

1979 F150 Custom: nothing under the hood at all (again)
1987 F150 XLT Lariat: 88 351W EFI
75 351W: soon to have 91 heads, ?? cam, double roller timing chain, Edelbrock Performer intake & Holley carb and be put back in 79 F150
84 351W: waiting for ???
Chevy 454: waiting for a truck (Mazda?Nissan?)