i am wanting to find out how much there is difference there is between the two please help me if you know
What Is The Difference 351m 400
Started by
Guest_drivingwild888_*
, Jan 31 2004 10:06 AM
6 replies to this topic
#5
davids78bronco
-
- Members
-
- 294 posts
fabricator extraordinaire
- Location:central Oregon
- Interests:Work all day, and build Bronco accessories in my free time. I've built pre-runner and winch bumpers, rock sliders and rear bumpers, w/ or w/o tire carriers, as well as HD cargo racks (not the bolt-to-your-hardtop POS's)
Posted 31 January 2004 - 10:53 PM
Word
Same blocks, same heads, same intakes and exhaust, same everything externally... only difference is the crank and pistons. If you have a 351M, and want a 400 - I strongly suggest that - then swap the 351's crank and pistons for those from a 400
Same blocks, same heads, same intakes and exhaust, same everything externally... only difference is the crank and pistons. If you have a 351M, and want a 400 - I strongly suggest that - then swap the 351's crank and pistons for those from a 400
#7
freak
-
- Members
-
- 113 posts
F-Series Maniac
Posted 01 December 2004 - 05:29 PM
The differences between the 351M and 400 are the crank and piston's.To make a 351 a 400 you need a 400 crank which is a 4.00" stroke compared to a 351 3.50" stroke,and you have to use 400 piston's which have the pin's further up in the piston's.The 351 and 400 both use the same rod length 6.580 that's why the pin's in the 400 piston's have to closer to the ring land's.
Reply to this topic
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
