351w w/2 bolt mains
Thread Starter
Joined: Jan 2008
Posts: 21
351w w/2 bolt mains
Im thinking about buying a 1990 351w that is really affordable. BUT it only has 2 bolt mains. I read on another thread that on the 2 bolt versions you can drill and turn journals 2, 3 and 4 into 4 bolt mains? Is that possible? And If I were to leave the mains 2 bolt what kind of horse power could i make with out having to worry about hurting the motor. Im hoping to make around 4-450 hp. Thanks for any help.
2nd Gear Member
Joined: Jul 2006
Posts: 186
From: Pennsylvania
RE: 351w w/2 bolt mains
making that power a two bolt motor will keep you plenty safe. I got a two bolt motor and am not that worried about breaking the block. I think the general concensus around here is that a post 74 productionblock is safe to about 600 to 650 horsepower without pushing it to hard.
2nd Gear Member
Joined: Mar 2004
Posts: 160
From: Dartmouth, MA
RE: 351w w/2 bolt mains
I'm building an 86 326 stroker w/ a 351w with a2 bolt main. and a girdle. and as long as you have the girdle you'll be allset because it connects all the mains to act as one. they can't move seperate from the others.
4th Gear Member
Joined: Feb 2006
Posts: 1,250
From: South Jersey
RE: 351w w/2 bolt mains
ORIGINAL: Sk8trfred
I'm building an 86 326 stroker w/ a 351w with a2 bolt main. and a girdle. and as long as you have the girdle you'll be allset because it connects all the mains to act as one. they can't move seperate from the others.
I'm building an 86 326 stroker w/ a 351w with a2 bolt main. and a girdle. and as long as you have the girdle you'll be allset because it connects all the mains to act as one. they can't move seperate from the others.
4th Gear Member
Joined: Feb 2006
Posts: 1,250
From: South Jersey
RE: 351w w/2 bolt mains
ORIGINAL: HI93LX
Im thinking about buying a 1990 351w that is really affordable. BUT it only has 2 bolt mains. I read on another thread that on the 2 bolt versions you can drill and turn journals 2, 3 and 4 into 4 bolt mains? Is that possible? And If I were to leave the mains 2 bolt what kind of horse power could i make with out having to worry about hurting the motor. Im hoping to make around 4-450 hp. Thanks for any help.
Im thinking about buying a 1990 351w that is really affordable. BUT it only has 2 bolt mains. I read on another thread that on the 2 bolt versions you can drill and turn journals 2, 3 and 4 into 4 bolt mains? Is that possible? And If I were to leave the mains 2 bolt what kind of horse power could i make with out having to worry about hurting the motor. Im hoping to make around 4-450 hp. Thanks for any help.
