4 bolt vs. 2 bolt
03-24-2009, 01:21 PM
#1
Thread Starter
Join Date: Dec 2008
Location: Kansas
Posts: 15
4 bolt vs. 2 bolt
I am going to start doing some research on motors and I really don't know what the difference between a 2 bolt and a 4 bolt main are? And is there any way to tell with a motor that is not torn down. And what is the difference between a 351W and a 351C. Thanks all!
03-24-2009, 01:42 PM
#2
3rd Gear Member
Join Date: Aug 2007
Location: SC
Posts: 665
um i believe the differance betweet 4 bolt and 2 bolt is that a 4 bolt has 4 bolts holding down the main caps and the 2 bolt has only 2 bolts holding down the main caps ..main caps hold the crank in place .. you can tell by pulling off the oil pan i suppose ....
351 windsor
351 cleveland
tech differances between them unfortunately i know not my friend lol
351 windsor
351 cleveland
tech differances between them unfortunately i know not my friend lol
03-24-2009, 01:46 PM
#3
M.A.D. Motorsports
Join Date: Jul 2006
Location: Indiana
Posts: 8,014
Yup, 4 bolt mains have 4 bolts securing the main caps down. Unless you take off the oil pan or you know your motors (which you don't) you can't tell. Most ford small blocks from what I know are 2 bolt mains.FRPP has 4 bolt main aftermarket blocks.
03-24-2009, 02:06 PM
#4
2nd Gear Member
Join Date: Apr 2008
Location: ohio/ind
Posts: 222
take pan off and look at main caps , 4 bolt main blocks are stronger but 2 bolts do the job . you really dont need a 4 bolt main unless u plan on making alot hp . and 351w and 351c the windsor is a small block and the cleavland is big block if thinking right .
03-24-2009, 04:07 PM
#5
Thread Starter
Join Date: Dec 2008
Location: Kansas
Posts: 15
So I gather 4 bolt is for strenght on the crank. What are some opinions on motors out there. 302, 351, 390. I see a lot of people have 347 stroker. What exactly is a 'stroker'? I am just looking to get ahold of a motor for cheap and put some money into and see what hp I can get. I just want to be in the 12's without sc, tc, or nitrous!
03-24-2009, 05:19 PM
#8
2nd Gear Member
Join Date: Feb 2006
Location: Florida!
Posts: 271
When built properly a cleavland is a F*ing beast... That style head is no joke
03-24-2009, 06:06 PM
#9
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
a stroker is a 302 whose block is .030 and throw on crank is longer as well as longer connecting rods, 302 = 3.00 throw on crank 4.000 piston and 5.090 rod,.....347 = 3.4 throw on crank and a 5.400 or 5.315 rod and a 4.030 piston.
03-24-2009, 09:28 PM
#10
1st Gear Member
Join Date: Apr 2006
Location: Ohio
Posts: 127
aye as MJR said stroker is basically a combination of the piston being a larger diameter and the rods being longer making the piston move in and out further.
As for a cleveland iv'e heard they are a little harder to find parts for and im pretty sure you can't just swap parts from you basic 302 like you could a windsor(even though most wouldn't want to do that anyways due to the combination differences).
As for a cleveland iv'e heard they are a little harder to find parts for and im pretty sure you can't just swap parts from you basic 302 like you could a windsor(even though most wouldn't want to do that anyways due to the combination differences).