283/350 main brg?

Dennis Paz · 06-22-2009, 08:03 PM

Does anyone other than clevite make a main bearing to put a 283 crank in a 350 block?
Clevite only has one at standard and standard cranks are getting few and far between.

283SS · 06-22-2009, 08:32 PM

here is bearing spacers
http://www.raceeng.com/p-7689-bearin...27-to-350.aspx

Ed Wright · 06-23-2009, 08:57 AM

Doesn't King still make spacer bearings? Thicker bearings, no spacers needed.

Dennis Paz · 06-24-2009, 09:24 PM

I called king today and they no longer have anything for large to small journal conversion. I dont think I like the idea of spacers either. My current engine has clevite mains and is currently fine but for the future maybe an aftermarket 3.0 stroke crank or go back to a 283 block.

Dwight Southerland · 06-25-2009, 06:06 AM

Quote:

Originally Posted by Dennis Paz

I called king today and they no longer have anything for large to small journal conversion. I dont think I like the idea of spacers either. My current engine has clevite mains and is currently fine but for the future maybe an aftermarket 3.0 stroke crank or go back to a 283 block.

The spacers will be fine if properly fitted. I have built motors with spacers for dirt track racers who have literally worn out the blocks with no problems. If those guys can't beak it, it's gotta be tough. Heck, I have even used an old set of bearings in the large journal block and align-honed it to fit with no problems. I always locked the spacers in place with Loctite stud and bearing mount and/or roll pins and never took them out after align-honing.

Rich Biebel · 06-25-2009, 09:07 AM

I agree with Dwight......I have used spacers that we made from std. bearings in a 400 block to install a 350 crank for a 377's. We line bored the bearings to size. I went thru the trouble of drilling thru the bearing spacer into the main saddle and tapping the hole for a machine screw. I used countersunk headed screws and ground them down to be sure they sat below the surface. Never had a problem using those for myself or my buddy and he really rpm'ed his stuff!! His motor generally saw 8200 on every run.....

06-25-2009, 11:07 AM

No problems with spacer bearings here either. Been using them for about 15 years with a 327 crank in a 350 poured block. Engine turns between 9500-10,000 rpm thru the 1/4. I use the ones from Race Engineering made fron ACL bearings.

Dennis Paz · 06-25-2009, 08:58 PM

SCOTT
Do you install the spacers directly in the block as is?
Sounds like I should buy a set and not worry about it.

06-26-2009, 08:10 AM

Pretty much as they come. I do check the slots where the bearing lock tang sits in the spacer. I sometime have to file the slot a little for the bearing to fit the way I like. I torque the main caps in place with the spacer bearings just to double check the bore to make sure there is not a problem. I then install the bearings and check my crank clearance. I've used several sets without any problems.

RPinoski1 · 06-26-2009, 08:54 AM

Usually you have to have a line hone done to the spacers, then they stay with that block in order of placement, makes future freshening easier.

Patterson sells them too....usually in stock

06-22-2009, 08:03 PM	#1
Dennis Paz Junior Member Join Date: Apr 2005 Location: stockton ca Posts: 97 Likes: 0 Liked 5 Times in 3 Posts	283/350 main brg? Does anyone other than clevite make a main bearing to put a 283 crank in a 350 block? Clevite only has one at standard and standard cranks are getting few and far between.

06-22-2009, 08:32 PM	#2
283SS Junior Member Join Date: Dec 2007 Posts: 35 Likes: 0 Liked 0 Times in 0 Posts	Re: 283/350 main brg? here is bearing spacers http://www.raceeng.com/p-7689-bearin...27-to-350.aspx

06-23-2009, 08:57 AM	#3
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: 283/350 main brg? Doesn't King still make spacer bearings? Thicker bearings, no spacers needed. __________________ Ed Wright 4156 SS/JA

06-24-2009, 09:24 PM	#4
Dennis Paz Junior Member Join Date: Apr 2005 Location: stockton ca Posts: 97 Likes: 0 Liked 5 Times in 3 Posts	Re: 283/350 main brg? I called king today and they no longer have anything for large to small journal conversion. I dont think I like the idea of spacers either. My current engine has clevite mains and is currently fine but for the future maybe an aftermarket 3.0 stroke crank or go back to a 283 block.

06-25-2009, 09:07 AM	#6
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: 283/350 main brg? I agree with Dwight......I have used spacers that we made from std. bearings in a 400 block to install a 350 crank for a 377's. We line bored the bearings to size. I went thru the trouble of drilling thru the bearing spacer into the main saddle and tapping the hole for a machine screw. I used countersunk headed screws and ground them down to be sure they sat below the surface. Never had a problem using those for myself or my buddy and he really rpm'ed his stuff!! His motor generally saw 8200 on every run..... __________________ Rich Biebel S/C 1479 Stock 147R

06-25-2009, 11:07 AM	#7
Tilley2007 Guest Posts: n/a	Re: 283/350 main brg? No problems with spacer bearings here either. Been using them for about 15 years with a 327 crank in a 350 poured block. Engine turns between 9500-10,000 rpm thru the 1/4. I use the ones from Race Engineering made fron ACL bearings.

06-25-2009, 08:58 PM	#8
Dennis Paz Junior Member Join Date: Apr 2005 Location: stockton ca Posts: 97 Likes: 0 Liked 5 Times in 3 Posts	Re: 283/350 main brg? SCOTT Do you install the spacers directly in the block as is? Sounds like I should buy a set and not worry about it.

06-26-2009, 08:10 AM	#9
Tilley2007 Guest Posts: n/a	Re: 283/350 main brg? Pretty much as they come. I do check the slots where the bearing lock tang sits in the spacer. I sometime have to file the slot a little for the bearing to fit the way I like. I torque the main caps in place with the spacer bearings just to double check the bore to make sure there is not a problem. I then install the bearings and check my crank clearance. I've used several sets without any problems.

06-26-2009, 08:54 AM	#10
RPinoski1 Member Join Date: Jan 2002 Location: PLACERVILLE, CA Posts: 182 Likes: 0 Liked 0 Times in 0 Posts	Re: 283/350 main brg? Usually you have to have a line hone done to the spacers, then they stay with that block in order of placement, makes future freshening easier. Patterson sells them too....usually in stock