How to Tell the 302 Ford From the 351 Ford
Ford has used many types of engines in its vehicles over the years. Two types of engines that have been used in Ford cars and trucks are the 302 and 351. These engines have gone through different types and styles with varying amounts of horsepower. This can make them hard to differentiate once they have been installed in a vehicle. An example of this is the 351 Windsor, which is a modified version of the 302.
Other People Are Reading
Instructions
-
-
1
Measure the deck height of the motor with a ruler. The 302 will have a deck height of 8.2 inches and the 351 will have a deck height of 9.5 inches. Older versions of the 351 engine had a deck height that was ½-inch higher than the 302.
-
2
Look at the Vehicle Identification Number, or VIN, for the vehicle. The eighth digit of the VIN is the code for the engine. A 302 will be indicated by the letter H. A 351 will be indicated by the letter N.
-
-
3
Compare the engine displacement of the vehicle by looking at the sticker that is on the engine valve cover. The engine displacement may also be stamped on the engine intake manifold.
-
4
Locate the head bolts on the engine and compare the diameter with a ruler. The 302 has 7/16-inch diameter head bolts and the 351 has ½-inch diameter head bolts.
-
5
Compare the intake on the engine. The intake on the 351 will be wider than the 302 because the deck height is higher.
-
1
Tips & Warnings
The 351 Windsor engine has thicker cylinder walls than the 302.
Do not confuse the 351 Windsor motor with the 351 Cleveland motor. The Cleveland motor was only produced from 1970 to 1975.
References
Resources
- Photo Credit knuckle image by Witold Krasowski from Fotolia.com
More Like This
Comments
-
This info is incorrect! It is reversed, nobody proof reads anymore! The FORD 302 VIN 8th LETTER is N, not H. H is the 351 see you in.
