351w 351m 351c Help
Thread Starter
|
Freshman User
Joined: Apr 2001
Posts: 33
Likes: 0
351w 351m 351c Help
First off I will say that I know that a 351w is a small block. I have been told that a 351c is the biggest of the three. I have also been told that a 351m and 351c are big blocks and I have been told they are all small blocks. So any light that you can shed would be much appreciated.
Posting Guru
Joined: Aug 2000
Posts: 2,416
Likes: 4
From: PacNW
351w 351m 351c Help
All 3 motors are basically considered small blocks. The M is the largest and heaviest, it's almost as big as a 460 with which it shares the bellhousing bolt pattern but it's really just a C with a taller deck. The 351M and 400 share the same block but the 400 has a longer stroke to give it the added CID.
Posting Guru
Joined: Aug 2000
Posts: 1,127
Likes: 3
From: (near) Denver USA
351w 351m 351c Help
ford fanatic,
The 302, 351W, 351C, and 351M all share the same bore size (4.00") and bore spacing (4.78"), which is probably why they are all considered small blocks.
BTW, the 351M and 351W crankshafts are different parts (try fitting a 351M crank in a 351W block if you don't believe me). They happen to share the same main and rod journal sizes, and the length of stroke (3.5"). The 351M crank also has a wider thrust bearing journal.
BubbaF250
1980 F250 4x4 Custom, 351M/NP435/NP208/D44HD-TTB/D60-FF/3.55s 6750 GVW, Rust & White.
The 302, 351W, 351C, and 351M all share the same bore size (4.00") and bore spacing (4.78"), which is probably why they are all considered small blocks.
BTW, the 351M and 351W crankshafts are different parts (try fitting a 351M crank in a 351W block if you don't believe me). They happen to share the same main and rod journal sizes, and the length of stroke (3.5"). The 351M crank also has a wider thrust bearing journal.
BubbaF250
1980 F250 4x4 Custom, 351M/NP435/NP208/D44HD-TTB/D60-FF/3.55s 6750 GVW, Rust & White.
Posting Guru
Joined: Aug 1999
Posts: 1,485
Likes: 3
351w 351m 351c Help
Sorry, I had heard that Ford just put a Wcrank in a 400 with new pistons to make the 351M to cover the great demand for 351 engines after the Cs demise. Dang, I guess that means I cant put a 400 crank in a 351w block! (Woulodnt that be cool!?)
Nathan
Nathan
New User
Joined: Apr 2001
Posts: 10
Likes: 0
351w 351m 351c Help
YOUR'E MOST DEFINITLY CORRECT ecarter50.BETTER CLEAR A PATH FOR THE CRANK THROWS
Trending Topics
Elder User
Joined: Sep 2001
Posts: 887
Likes: 1
From: Jax FL
351w 351m 351c Help
as you read through a lot of the msg board, you will find that the 351m-400c/m are called small blocks due to bore spacing. basicly the 302-351w is one type and the 351c-351m-400c/m is another. the 351c is a hp monster that was discontinued in 1974. the 400c/m is the basis for the 351m, they are the same block, just different cranks. so if you want a 400 and you have a 351m, buy a 400 crank, you will have to change pistons as well, if i remember right.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Thread
Thread Starter
Forum
Replies
Last Post
Hunt-with-a-bluetick
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
18
Nov 18, 2003 05:32 PM
cypress_303
1973 - 1979 F-100 & Larger F-Series Trucks
3
Oct 14, 2003 11:06 AM
CJJTulsa
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
5
Feb 2, 2003 09:23 PM
jdbanks
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
17
Sep 29, 2001 06:11 PM